My mechanic replaced my spider on a 95 blazer. At that time I had no idea what a spider was. It fixed the problem for 4 months then the engine started missing and chugging bad upon acceleration and idle. After researching on TH-cam I found that he should have replaced the nut kit as well. I decided to do that myself and it was a success thanks to all you guys putting up how to videos I saved hundreds of dollars thanks again.
Very helpful...doing the same thing in Louisiana in July. Took one day to fashion a tool to get that pesky supply/return retainer bolt out: 6" of' 1/2" pipe for leverage, 1/4" wrench + T30 star driver - the last two held together with tape to keep everything from falling into the dark abyss...
Got the new kit. Pushing the old supply/return fuel lines towards the firewall. I assume I can push the flared lines from the tank back and away without screwing up anything?
Richard Baker from memory the lines into the back of the manifold had some give. I may have removed a strap? I was careful not to move them excessively
Got it! Most the parts are in. I'll pressure up with open plenum tomorrow and pressure gauge (car has been sitting since November). This video is invaluable!! Thanks again. Cheers!
Great video. I had mine replaced by a mechanic 6 months ago now its doing it again. I am replacing the fuel pressure regulator tomorrow not the entire thing. The screws on it are star with a raised nipple so I have to now buy special tools just to remove it oh well. After seeing this I feel totally confident in doing it. The mechanic did not replace the fuel lines x2 inside. He left the old ones. I didn't see any leaks though.
i ordered my parts online and all i can remember is online the parts were around half of the price to order it locally. if i had to guess i would say around 350? that was a long while ago i did this work. Since this i have literally re-built the motor and now it runs awesome and has tons more power.
Im happy to know this video can help you out with yours, it might look intimidating however it's simply 1 bolt at a time. with basic tools and some time it can definitely be done. Best of luck and thanks for watching. Cheers!
@drewkang34.Awesome, that's good to hear! Im having issues with mine right now. Really tough to start and runs like crap. There is a few things i want to change/look into. One is the O2 sensor and the other is the cat. I believe the cat is plugging up and needs to be replaced. My guess is that the O2 sensor is probably jacked, since I have driven around 45000kms on it and its the only thing i still haven't changed to try to make it run better.. work is crazy busy so when i have time i will look
I get sick and tired of the local mechanic robing there consumers blind especially at $90 bucks a hour to guess at what is wrong. THANK YOU FOR THIS VID!!
im really not sure of the brand, im just happy its working. shop around online, locally they wanted 600... i found it for about 200 plus shipping. was far less than half of the local price.
+RobHoffmann20 hey loved the informal video Captain and noticed that you have an MSD Ignition Kit as well what else you have in that 350 (-2 cylinders) shoot me an email when you get a chance!!! rlowe196440@gmail.com And want to know what kind/type of transmission you have in that little ole truck of yours (for a V-6 that little motor sounds strong as hell ... I bet it's "torque-key" as hell too)
@drewkang34 Check the timing before you pick up an EGR valve, and make sure to have a good look at the back of the intake manifold where that vacume line plugs in. when i changed my CPI the vacume line was almost crispy and leaking so i replaced it with a new length of hose. sometimes a vacume leak can make it run shitty, could also be something as simple as the computer needing to be reset. just disconnect the negative for a little while and clear the memory to start.
Well mine were not leaking from what i could tell but i figured that already having opened it up i may as well just change it for the 20 bucks it cost me to do it. as for the security bit your referring to, i have seen places like home depot carry security bit sets, may be a cheap way to get what you need for the job.
@RobHoffmann20 I had to put it in the shop , they said the timing was off. I dont know why because i didn't touch the timing at all. But its running much better now, thanks for your help.
@yz100f when it stalls has the engine had time to warm up? because i know the computer for the first few min makes it run very rich.. and after either warming up or reaching a predetermined time it will begin to run in open loop mode ( retrieving information from various sensors and adjusting fuel-air ratio accordingly) if you have a bad sensor it could be causing the truck to stall out
@drewkang34 and i have read somewhere that the CPI unit takes 10miles or so before its "broken in" you may just have to take it for a spin on the highway get her nice and hot and that could help break it in and may solve your problem
With how that system works it doesn't matter which one you put the poppet valve back into. 96 and up have sequential fuel injection, that does matter which one you put the poppet valve back into.
@drewkang34 well i needed a complete rebuild and i also had some heavy duty clutches and bands installed. wound up costing about 1500. not cheap but diden't have much of a choice at the time.
takes me about 10 min.. the first time (in this video i took my time doing it it was my first) then when i re-built the motor it was VERY fast to do since i already had the experience its a very easy thing to do.
I just bought a new Delphi spider for $299.99 and gasket set for $13.69 at Carquest, and had to get the fuel line kit (nut kit) at the dealer for $110.00.
reason i ask i also have a 1993 s-10 blazer thats a 4 door i know it need spider injector. its hard to crank sometime and i smell gas when is not running. you are the first i seen on youtude who give the correct way of doing cpi replacement. thank you very much. my tranmission is just fine, just seeing how much i could put in one thanks.
All seems to be fine, but before to put the uper part of intake manifold, I would like to know if I need to adjust the new Fuel Pressure Regulator I just put there just to be sure.
@RobHoffmann20 You might want to check your spider injector. Because thats what mines was doing before I install it. I wish you luck. If i have anymore problems i will be putting a v8 in mines.
if its leaking in the manifold then it has to be replaced. i know with mine if i took off the air intake and held the throttle open i could smell a lot of gasoline inside(Of course this was when its not running). and when i opened it up it was very clear i had a leak on the passenger side (the cleaner side) the gas will wash away carbon build up. i literally had pools of gas inside of my intake when i replaced my CPI.
RobHoffmann20 are you still gonna do the vacuum line video? There's none online would really appreciate if you just showed the route of the lines there's no videos of it what so ever online
hi. I am working on a 94 S10 Blazer the Tahoe Style with the same motor that you got the 4.3 Vortec and I got strong fuel to the back of the motor but as soon as I can prime it and then it'll start and run until the prime runs out or it'll run until I quit spraying gas in there could something else be wrong cuz I put a new computer new relays new fuel pump new throttle position sensor and the black deal on top that's got the little butterfly flap in it neither one of my wires are hot one of them supposed to be
Robert Gibson I'm not positive how to help you out but in my experience even a new fuel pump may not have enough pressure. Use a fuel pressure gauge and check you are over 60psi. If you are less out will not want to run. My truck was very specific with that. I once replaced the pump and the new pump was a cheaper one which couldn't make the required pressure so the truck wouldn't run
Check fuel pressure regulator. it's inside the plenum though so you might as well change the injectors while there because a good bit of work to get to it and may be leaking injectors also. fuel pressure reg comes with new injector kit. if you see one side clean and other dirty like this vid, dead giveaway something leaking in there. get the newer port injectors though, not poppet style.
is it hard to do all that i have one a 93 s10 blazer v6 4.3 and they told me that fuel was getting in the mottor that i might have a leak or have to change the injectors something like that you made it look pretty easy man nice blazer by the way .
Hey thanks for video..my blazer just started blinking c.e.l on highway which i know is from a misfire from previous 4.3. It ran fine after but next day when i started it to pull into garage i felt the misfire with slightly rough idle. Ive read forums and some people say this is the issue and others say various reasons. Do you believe this would have effect? Was your truck doing any similar?
I would suggest replacing plugs, wires, cap and rotor, Those are cheap and easy in comparison the the injector.Mine was not misfiring rather suffering from very poor fuel mileage and longer and longer crank times. Also very strong fuel smell from the intake when the throttle blade is opened with the engine off.
@drewkang34 my injector is still new... less than 6 months old... less than 20K on it.... i cut off the exhaust today and it seems to start easier... ha ha so im going to start there. i would LOVE a V8 in my blazer... however the emissions test is Canada is strict and probably wouldn't let me get away with something like that
@drewkang34 No problem buddy. good luck with the CPI replacement its not as scary as it looks. any questions you run into let me know hopefully i can help ya out if need be
@psychotikpaisano i found a place online who i bought it from and to be honest the service was not as good as i expected... first of all the unit i bought and installed no more than 6 months ago is leaking again... and sending the old unit back to them required me to spend roughly $20 in shipping charges to receive a 100 dollar deposit back for the core.. which i never got... nice isn't it? so i spent the money on a apparently "rebuilt" unit which leaks and i lost my deposit
On the part where you connected the fuel lines to the fuel injector, you had o-rings on the tips of the fuel lines. I could not get the fuel lines in with the o-rings on, but fitted perfect without them, clip and all. Why can't I get the fuel lines to fit w/the o-rings? Yes, they are lubed. Also do the poppet tubes have a "firing order" sorta speak?
Thanks Rob H mines a 1994 Sonoma s-15 v64.3 2wd , this could be Future Handy info , now I’m at 135.555 k second owner: just did a re-Tune spark :For the third time in the 10 years that I’ve owned I am run Valvoline max life synthetic ATF dexMerc. when they did my tranny at 103 k, long short story no comment involved water got in accidentally ... ;I live in Oregon it rains a lot up here//but also the vehicle is beginning to feel its age almost 26 years, there’s an article about GM common problems on the Internet and I’m wondering whether I’m going to end up facing doing my upper intake manifold gaskets ; someday :: might seem appropriate for me to plan ahead to know that I’m gonna be doing these new spider veins CPI; at the same time they dig into that upper manifold in case I want to save money I can buy some Amazon parts 5 star only THANKS
Thanks for watching! Unless it's mandatory I wouldn't be opening up the intake. although it may look like alot it really is straight forward. just one bolt at a time gets you there. Thanks for watching. Cheers!
@drewkang34 thankyou im gonna need it, i would love to have a big motor under that hood. i suppose there are ways around it haha i will have to see what happens down the road
@RobHoffmann20 I did the cpi replacement, and now my truck is skipping, Im thinking the egr valve. What you think? I put spark plugs in, and still doing it. The wires are fine.
it's wierd. When I hold the valve down and have someone turn the key over but not start I get great pressure If I have them turn the keep wait till the wine stops then hit the valve it spits a small stream of fuel out then the pressure bleeds ofF i replaces the strainer in the tank and fuel filter and the pump still wines strong. im lost. Guy looked at my truck yesterday and told me it was the CPI>
is it possible you left old O rings in before trying to install the fuel lines? and from what i was told this particular injector fires all at once, so the firing order is not important.
no mine was just very hard to start... does your fuel pressure drop after its running? that may mean its a bad fuel pump. i have already replaced my pump when i did the re-build.
I can take the manifold off and check for leaks prior repairs too though. i have good pressure at my test valve. You said check for leaks after the repair so If i see leaks i already got it apart and can replace it. How long did it take you to pull that intake off from start till you got to the CPI?
Edmund Arthur Dickenson Thanks for the positive feedback Art, as for the cost I honestly don't remember. I know it was more than a few hundred bucks. Its still working great as of today, I touch the key and is running. Thanks for watching! Cheers
I realize this video has a few years on it, but thanks for it just rhe same! Can you tell me where you purchased your replacement unit with fuel hoses included?
Thanks for watching. I had ordered the unit online, along with the hose/line kit. that being said I feel that a brand name is something to pay attention to with this type of repair. I have actually replaced it a 2nd time since. I have a brand name unit installed from my local parts store, it came with a 3yr warranty and yes a few bucks more but worth it in my opinion. If your looking for the cheapest price it may result in a short lifespan. My local parts store is a Carquest type store. they ordered it in and it arrived quickly. best of luck with your repair. Thanks again for checking it out. Cheers
That is THE same as THE one I have on my blazer 95 today we took It out and we foind out tha is liking much gas off the injecction. So I lea e here in el Salvador and here It cost 998.00 dollars its real expensive. But I will tryed to see if I can get It from THE usa.
I do see them online for under $200 American. im in Canada. I know mine was more expensive than that. not positive on the price but definitely shop around and also replace the fuel injection lines while your at it.
Hey man hope you see this. I got a 92 s10 with the same motor has a super rough idle smoke out of the tailpipe on start up once ina while smells like fuel hard when running . Have to pump the gas to start . Will stall occasionally to . Distributer has been done coils spark plugs ect time to do the injectors I'm guessing????
Well, if you remove the intake boot and with the engine off manually open the throttle body to simulate W.O.T and sniff the intake. If there is an overwhelming fuel smell that may be the issue(leaking spider injector) otherwise test your fuel pressure at the pressure port, very healthy should be around 65PSI while at idle. Anything less may cause a no run situation. Also the fuel filter may be clogged and require replacement. Those other mentions are cheaper than the actual injector and hose kit.
hey just wondering how much each replacement part cost you, i have recently came across this problem with my 94 blazer 4.3 vortec (fuel injected) and i am hoping to fix it , btw thanks for the vid lots of help.
Hi , I'm from Iraq and I have a Chevy Blazer 1996 4300 cc and it is a very great engine, is there any way to change the fuel injection system to a newer one? It is very hard to get spare parts today.
Hello, I'm not really sure about that model year. I'm sorry but I'm not much help for you. Maybe do some online research to see what others have done. best of luck!
Hey, where did you get your kit from? I just replaced the cat and muffler on my 94, but it also has a nasty fuel leak by the CPI unit, which in hindsight I should have changed first. Anyways, just wanting to know your experience with whoever you dealt with.
I haven't got any more video from this. I filmed this several years ago. To remove the injector if i remember correctly you lift up. The injector nozzles just have the tabs gently depressed and pulled up. Goodluck!
That's great ... Locally I have only NAPA, Autozone and GM Store... What is your opinion? Which is better? Napa or Autozone? GM Store is really expensive. =s
my truck idled good for a minute then I hit the gas and it starves for fuel around 2000 rpm then idle dies after a couple minutes and it won't start up again did your truck do this too?
@AlfredoLaguna-bw4gl This was a lot of years ago, probably not available. Most recently I got one from my local Napa, that was likely 3-4years back. my understanding us now you send away yours to be rebuilt. if you end up finding a source for them please share it here to help out others. Cheers!
Hi my name is Oceas Santamaria and I have a chevrolet blazer year 1995 and I have a problema with my spider injection I would like to know THE price off It.
I like your intake manifold style. My 03 S-10, ZR2 has the plastic plenum style. I wonder the performance/mpg difference. I average 17MPG combined but could drive nicer. I had a 97 GMC Jimmy and it had the plastic plenum also same with my 96 S-10 SS. All were X motors. I've only ever seen the aluminum, long runner style like yours on a Bravada once. I wonder what the story is. Also, why did you replace poppet style injector with poppet style when the port injector upgrade version is widely available in 2011?
Excessive cranking to get it started. poor fuel economy, and with the engine off remove the intake pipe to the manifold and manually open the throttle blade, it had a very strong fuel smell. you can also use a fuel pressure gauge on the test port and watch the pressure drop when you turn the engine off. hope this helps Cheers!
Thanks for sharing. Good pointers. --- For a 2000 GMC V6, 4.3 L, does anyone know the typical reliable life of the fuel pressure regulator; and the typical reliable life of the fuel injector / poppits ? Would it be wise to replace the fuel injector / poppits assembly after 200k miles?
As long as you get a brandnew name brand unit, AC DELCO/DELPHI/SMP/etc, the quality and reliability should go hand in hand for at least 100k miles like GM intended and as for replacing it after 200k miles, i would, even if it isnt causing any trouble with hard starts, erratic idle or lack of power. I currently own a 2005 GMC sierra 1500 with the 4.3L vortec with just over 190k miles on it, and i plan on changing the entire MPI unit out soon. It still starts fine, idles steady, no hesitation, just lack of power when it downshifts and at higher RPM as if the typical power robbing a/c was on, but isnt, even though it has a brand new delphi fuel pump, ac delco spark plugs, stock replacement wires, ac delco distributor cap and ac delco rotor. The lack of power could come from the injectors being diry or just plain old and worn out, one try of lucas gas treatment/fuel injector cleaner helped restore some power, but that was short lived. Just be sure to get all brand new gaskets(fel-pro) for everything thats required for the change over, a vacuum leak is the last thing you would want after you have buttoned everything back up together.
@@Bige4u Thanks, Obtained a new Multiport Fuel Injector Assembly and new gaskets. But one of the new gasket that goes around the Fuel Meter Body is thinner than the old gasket. Seems strange that the new gasket may be less effective in sealing than the old one since it is thinner.
I have a 91 s10 taho blazer. I don't have a vortec intake. Do you have a video about how you switched it out four s vortec intake. Our am i just way off base since I'm thinking 93 have the throttle body injector also.
Brian Parker There was an engine option to have the CPI type of fuel injection, it included higher pressure fuel pump, different intake manifold, different injectors and likely other items. My truck came with that option from the factory. Hope that helps. Thanks for watching. Cheers
If you mean to say the spider injector I remember it being expensive like 300 something. That included exchange rate and shipping costs. (I'm in Canada after all)
![[TH] 2024 PMSL SEA Finals D3 | Fall | รู้ผลทีมแชมป์ พร้อมตั๋วสู่ PMGC](http://i.ytimg.com/vi/7NxsN0Ch6vk/mqdefault.jpg)
My mechanic replaced my spider on a 95 blazer. At that time I had no idea what a spider was. It fixed the problem for 4 months then the engine started missing and chugging bad upon acceleration and idle. After researching on TH-cam I found that he should have replaced the nut kit as well. I decided to do that myself and it was a success thanks to all you guys putting up how to videos I saved hundreds of dollars thanks again.
11 years later and your video is still awesome! even though the injectors and fuel feed and return lines cannot be found anymore
I'm happy it can help! I did buy a new injector a few years ago. it was the OE brand not an aftermarket. Expensive but it works
Not any more?... Wahhhhh... 😢
Nicely done. You chose well what to include and what fluff to leave out. I thank you for helping me avoid a lot of guesswork on this job.
Thank you so much for a no bs approach to doing this! Very informative and it doesn't seem very daunting anymore.
Justin Fincher I'm happy you enjoyed the video! Thanks for commenting
cheers!
Very straight forward and informative, well done!
Thank you for the feedback! I appreciate you taking the time to check it out.
Cheers,
Very helpful...doing the same thing in Louisiana in July. Took one day to fashion a tool to get that pesky supply/return retainer bolt out: 6" of' 1/2" pipe for leverage, 1/4" wrench + T30 star driver - the last two held together with tape to keep everything from falling into the dark abyss...
Richard Baker sounds creative! happy my video could help you along!
cheers!
Thank you Rob! New kit at the parts store tomorrow....may have a question or two. So great to have a video with the EXACT same engine!! Cheers!
Got the new kit. Pushing the old supply/return fuel lines towards the firewall. I assume I can push the flared lines from the tank back and away without screwing up anything?
Richard Baker from memory the lines into the back of the manifold had some give. I may have removed a strap? I was careful not to move them excessively
Got it! Most the parts are in. I'll pressure up with open plenum tomorrow and pressure gauge (car has been sitting since November). This video is invaluable!! Thanks again. Cheers!
Great video. I had mine replaced by a mechanic 6 months ago now its doing it again. I am replacing the fuel pressure regulator tomorrow not the entire thing. The screws on it are star with a raised nipple so I have to now buy special tools just to remove it oh well. After seeing this I feel totally confident in doing it. The mechanic did not replace the fuel lines x2 inside. He left the old ones. I didn't see any leaks though.
i ordered my parts online and all i can remember is online the parts were around half of the price to order it locally. if i had to guess i would say around 350? that was a long while ago i did this work. Since this i have literally re-built the motor and now it runs awesome and has tons more power.
Watched this 3 times so far. Gonna attempt it Sunday! Ready to have all my power back
Thank you because this video helped me very much
That's great! Im glad it could help you out. thanks for watching.
Cheers!
Very good grasshopper,you have a cal.ing teachers voice that truly loved your students,then the iceing on the cake,test dr.sweet
Thank you for the kind words, I appreciate you watching the video.
Cheers!
Thanks , i changed the CPI injector on my son's S10 it was really helpful thank u very much KEEP UP THE GOOD WORK
Happy it helped you out! Glad to hear your helping out your son getting his S10 running.
Excellent how to video! Thanks for sharing :)
Thanks for the feedback, and thank you for watching!
Cheers!
Okay not to bad after all to do this replacement crazy how common it is on these for failure .
Considering the temperature changes inside the manifold it's not too surprising. also rather simple to replace. Could be worse that's for sure!
Thanks for this video! Incredible helpful.
Im really glad my Blazer is TBI lol
Got the o-ring thing figured out. But thanks for the reply about the firing order thing, I was kinda worried about that.
Hey thanks for taking ur time do this I have the same problem with my blazer I think I can do it too
Im happy to know this video can help you out with yours, it might look intimidating however it's simply 1 bolt at a time. with basic tools and some time it can definitely be done. Best of luck and thanks for watching.
Cheers!
Great video!
Thanks the video helped alot I just did mine in a 95 blazer took about an hour and a half.
Awesome happy it could help you out. Hope it all went smooth for ya
@drewkang34.Awesome, that's good to hear! Im having issues with mine right now. Really tough to start and runs like crap. There is a few things i want to change/look into. One is the O2 sensor and the other is the cat. I believe the cat is plugging up and needs to be replaced. My guess is that the O2 sensor is probably jacked, since I have driven around 45000kms on it and its the only thing i still haven't changed to try to make it run better.. work is crazy busy so when i have time i will look
I get sick and tired of the local mechanic robing there consumers blind especially at $90 bucks a hour to guess at what is wrong. THANK YOU FOR THIS VID!!
im really not sure of the brand, im just happy its working. shop around online, locally they wanted 600... i found it for about 200 plus shipping. was far less than half of the local price.
thanks for sharing this video, helped us noobies out alot.
That was my first time replacing the spider also, gotta start somewhere. Glad it helped you out. - Cheers
+RobHoffmann20 hey loved the informal video Captain and noticed that you have an MSD Ignition Kit as well what else you have in that 350 (-2 cylinders) shoot me an email when you get a chance!!!
rlowe196440@gmail.com
And want to know what kind/type of transmission you have in that little ole truck of yours (for a V-6 that little motor sounds strong as hell ... I bet it's "torque-key" as hell too)
No problem! I am happy the video could help people out.
@drewkang34 Check the timing before you pick up an EGR valve, and make sure to have a good look at the back of the intake manifold where that vacume line plugs in. when i changed my CPI the vacume line was almost crispy and leaking so i replaced it with a new length of hose. sometimes a vacume leak can make it run shitty, could also be something as simple as the computer needing to be reset. just disconnect the negative for a little while and clear the memory to start.
Well mine were not leaking from what i could tell but i figured that already having opened it up i may as well just change it for the 20 bucks it cost me to do it. as for the security bit your referring to, i have seen places like home depot carry security bit sets, may be a cheap way to get what you need for the job.
@RobHoffmann20 I had to put it in the shop , they said the timing was off. I dont know why because i didn't touch the timing at all. But its running much better now, thanks for your help.
@yz100f when it stalls has the engine had time to warm up? because i know the computer for the first few min makes it run very rich.. and after either warming up or reaching a predetermined time it will begin to run in open loop mode ( retrieving information from various sensors and adjusting fuel-air ratio accordingly) if you have a bad sensor it could be causing the truck to stall out
Better to be safe than sorry. Great video though and I don't miss doing any of these lol.
@drewkang34 and i have read somewhere that the CPI unit takes 10miles or so before its "broken in" you may just have to take it for a spin on the highway get her nice and hot and that could help break it in and may solve your problem
Good job can I get the part numbers for em n where can I get em from ?
With how that system works it doesn't matter which one you put the poppet valve back into. 96 and up have sequential fuel injection, that does matter which one you put the poppet valve back into.
Brilliant design, getting a single injector to function like a MPI system!
@drewkang34 well i needed a complete rebuild and i also had some heavy duty clutches and bands installed. wound up costing about 1500. not cheap but diden't have much of a choice at the time.
good instructional vid brother.
takes me about 10 min.. the first time (in this video i took my time doing it it was my first) then when i re-built the motor it was VERY fast to do since i already had the experience its a very easy thing to do.
I just bought a new Delphi spider for $299.99 and gasket set for $13.69 at Carquest, and had to get the fuel line kit (nut kit) at the dealer for $110.00.
The belt tensioner can stay on. I believe that is what your talking about. good luck with your project
RobHoffmann20 Hi! At 7:20 we can see a purple wire running besides the manifold. Do you know where it goes? Thanks!
reason i ask i also have a 1993 s-10 blazer thats a 4 door i know it need spider injector. its hard to crank sometime and i smell gas when is not running. you are the first i seen on youtude who give the correct way of doing cpi replacement. thank you very much. my tranmission is just fine, just seeing how much i could put in one thanks.
good job,music,and information where to find fuel injector,thanx!!
All seems to be fine, but before to put the uper part of intake manifold, I would like to know if I need to adjust the new Fuel Pressure Regulator I just put there just to be sure.
@RobHoffmann20 You might want to check your spider injector. Because thats what mines was doing before I install it. I wish you luck. If i have anymore problems i will be putting a v8 in mines.
if its leaking in the manifold then it has to be replaced. i know with mine if i took off the air intake and held the throttle open i could smell a lot of gasoline inside(Of course this was when its not running). and when i opened it up it was very clear i had a leak on the passenger side (the cleaner side) the gas will wash away carbon build up. i literally had pools of gas inside of my intake when i replaced my CPI.
I'm in the ballpark of 8L/per 100km or around 29MPG since the rebuild. That's with a very light foot
RobHoffmann20 are you still gonna do the vacuum line video? There's none online would really appreciate if you just showed the route of the lines there's no videos of it what so ever online
That's outstanding MPG for this engine/vehicle no matter how light footed you drive.
hi. I am working on a 94 S10 Blazer the Tahoe Style with the same motor that you got the 4.3 Vortec and I got strong fuel to the back of the motor but as soon as I can prime it and then it'll start and run until the prime runs out or it'll run until I quit spraying gas in there could something else be wrong cuz I put a new computer new relays new fuel pump new throttle position sensor and the black deal on top that's got the little butterfly flap in it neither one of my wires are hot one of them supposed to be
Robert Gibson I'm not positive how to help you out but in my experience even a new fuel pump may not have enough pressure. Use a fuel pressure gauge and check you are over 60psi. If you are less out will not want to run. My truck was very specific with that. I once replaced the pump and the new pump was a cheaper one which couldn't make the required pressure so the truck wouldn't run
Check fuel pressure regulator. it's inside the plenum though so you might as well change the injectors while there because a good bit of work to get to it and may be leaking injectors also. fuel pressure reg comes with new injector kit. if you see one side clean and other dirty like this vid, dead giveaway something leaking in there. get the newer port injectors though, not poppet style.
its not mandatory but if they begin to leak you will have to remove the intake yet again to repair it.
is it hard to do all that i have one a 93 s10 blazer v6 4.3 and they told me that fuel was getting in the mottor that i might have a leak or have to change the injectors something like that you made it look pretty easy man nice blazer by the way .
Hey thanks for video..my blazer just started blinking c.e.l on highway which i know is from a misfire from previous 4.3. It ran fine after but next day when i started it to pull into garage i felt the misfire with slightly rough idle. Ive read forums and some people say this is the issue and others say various reasons. Do you believe this would have effect? Was your truck doing any similar?
I would suggest replacing plugs, wires, cap and rotor, Those are cheap and easy in comparison the the injector.Mine was not misfiring rather suffering from very poor fuel mileage and longer and longer crank times. Also very strong fuel smell from the intake when the throttle blade is opened with the engine off.
desde panamá mis saludos no entiendo el ingles pero el video si y esta interesante
@drewkang34 my injector is still new... less than 6 months old... less than 20K on it.... i cut off the exhaust today and it seems to start easier... ha ha so im going to start there. i would LOVE a V8 in my blazer... however the emissions test is Canada is strict and probably wouldn't let me get away with something like that
what brand did you use? AC Delco, Delphi? Thanks and Good Video
By the way your video was great insight! especially for us noobs
@drewkang34 No problem buddy. good luck with the CPI replacement its not as scary as it looks. any questions you run into let me know hopefully i can help ya out if need be
thank you
the supply and return hoses come together in the kit
I believe so
very helpful... appreciate
@psychotikpaisano i found a place online who i bought it from and to be honest the service was not as good as i expected... first of all the unit i bought and installed no more than 6 months ago is leaking again... and sending the old unit back to them required me to spend roughly $20 in shipping charges to receive a 100 dollar deposit back for the core.. which i never got... nice isn't it? so i spent the money on a apparently "rebuilt" unit which leaks and i lost my deposit
On the part where you connected the fuel lines to the fuel injector, you had o-rings on the tips of the fuel lines. I could not get the fuel lines in with the o-rings on, but fitted perfect without them, clip and all. Why can't I get the fuel lines to fit w/the o-rings? Yes, they are lubed. Also do the poppet tubes have a "firing order" sorta speak?
About to take this on, this helps.
Braden Reed I'm glad it helps. Good luck with the replacement
Thanks Rob H mines a 1994 Sonoma s-15 v64.3 2wd , this could be Future Handy info , now I’m at 135.555 k second owner: just did a re-Tune spark :For the third time in the 10 years that I’ve owned
I am run Valvoline max life synthetic ATF dexMerc. when they did my tranny at 103 k, long short story no comment involved water got in accidentally ... ;I live in Oregon it rains a lot up here//but also the vehicle is beginning to feel its age almost 26 years, there’s an article about GM common problems on the Internet and I’m wondering whether I’m going to end up facing doing my upper intake manifold gaskets ; someday :: might seem appropriate for me to plan ahead to know that I’m gonna be doing these new spider veins CPI; at the same time they dig into that upper manifold in case I want to save money I can buy some Amazon parts 5 star only THANKS
Thanks for watching! Unless it's mandatory I wouldn't be opening up the intake. although it may look like alot it really is straight forward. just one bolt at a time gets you there. Thanks for watching.
Cheers!
Is spider the reason for the wheel turning off while running?
What's the mpg on that s10
@TheChevy15000 No definitely not. i will do everything in my power to keep this truck on the road.
@drewkang34 thankyou im gonna need it, i would love to have a big motor under that hood. i suppose there are ways around it haha i will have to see what happens down the road
@RobHoffmann20 I did the cpi replacement, and now my truck is skipping, Im thinking the egr valve. What you think? I put spark plugs in, and still doing it. The wires are fine.
Could you give me the code, size and name of those fuel lines you are using?... please?.
it's wierd. When I hold the valve down and have someone turn the key over but not start I get great pressure If I have them turn the keep wait till the wine stops then hit the valve it spits a small stream of fuel out then the pressure bleeds ofF i replaces the strainer in the tank and fuel filter and the pump still wines strong. im lost. Guy looked at my truck yesterday and told me it was the CPI>
@RobHoffmann20 Emissions here in Geogria ain't that bad. My other one is a 1985 and they really don't trip that much about them. But anyway good luck.
is it possible you left old O rings in before trying to install the fuel lines? and from what i was told this particular injector fires all at once, so the firing order is not important.
how much for tranmission rebuilt?
no mine was just very hard to start... does your fuel pressure drop after its running? that may mean its a bad fuel pump. i have already replaced my pump when i did the re-build.
Fuckin legend
Thanks! and thank you for the view and comments.
But thanks alot because you answer me rigth alway.
I can take the manifold off and check for leaks prior repairs too though. i have good pressure at my test valve. You said check for leaks after the repair so If i see leaks i already got it apart and can replace it. How long did it take you to pull that intake off from start till you got to the CPI?
very well done, well spoken also....much better than having script that interferes with viewing. how much did all the parts cost ?....Art.
Edmund Arthur Dickenson Thanks for the positive feedback Art, as for the cost I honestly don't remember. I know it was more than a few hundred bucks. Its still working great as of today, I touch the key and is running. Thanks for watching!
Cheers
I realize this video has a few years on it, but thanks for it just rhe same! Can you tell me where you purchased your replacement unit with fuel hoses included?
Thanks for watching. I had ordered the unit online, along with the hose/line kit. that being said I feel that a brand name is something to pay attention to with this type of repair. I have actually replaced it a 2nd time since. I have a brand name unit installed from my local parts store, it came with a 3yr warranty and yes a few bucks more but worth it in my opinion. If your looking for the cheapest price it may result in a short lifespan. My local parts store is a Carquest type store. they ordered it in and it arrived quickly. best of luck with your repair.
Thanks again for checking it out.
Cheers
@@RobHoffmann20 THANKS A LOT , i FOUND THE PLACE...I´m gonna post it here to others to know where.
necesito conseguir ese repuesto..tal como viene en el video....ayudame a encontrarlo en el ecuador
That is THE same as THE one I have on my blazer 95 today we took It out and we foind out tha is liking much gas off the injecction. So I lea e here in el Salvador and here It cost 998.00 dollars its real expensive. But I will tryed to see if I can get It from THE usa.
I do see them online for under $200 American. im in Canada. I know mine was more expensive than that. not positive on the price but definitely shop around and also replace the fuel injection lines while your at it.
@RobHoffmann20
Damn dude that sucks, im sorry!
Im gonna search hard for one with a warranty
Hey man hope you see this. I got a 92 s10 with the same motor has a super rough idle smoke out of the tailpipe on start up once ina while smells like fuel hard when running . Have to pump the gas to start . Will stall occasionally to . Distributer has been done coils spark plugs ect time to do the injectors I'm guessing????
Well, if you remove the intake boot and with the engine off manually open the throttle body to simulate W.O.T and sniff the intake. If there is an overwhelming fuel smell that may be the issue(leaking spider injector) otherwise test your fuel pressure at the pressure port, very healthy should be around 65PSI while at idle. Anything less may cause a no run situation. Also the fuel filter may be clogged and require replacement. Those other mentions are cheaper than the actual injector and hose kit.
hey just wondering how much each replacement part cost you, i have recently came across this problem with my 94 blazer 4.3 vortec (fuel injected) and i am hoping to fix it , btw thanks for the vid lots of help.
is this truck in a scrap yard in brantford ontario now ?
What size is the Torkz bit you used on that bracket?
I think it's a T27 Torx.
Hi , I'm from Iraq and I have a Chevy Blazer 1996 4300 cc and it is a very great engine, is there any way to change the fuel injection system to a newer one? It is very hard to get spare parts today.
Hello, I'm not really sure about that model year. I'm sorry but I'm not much help for you. Maybe do some online research to see what others have done.
best of luck!
Hey, where did you get your kit from?
I just replaced the cat and muffler on my 94, but it also has a nasty fuel leak by the CPI unit, which in hindsight I should have changed first.
Anyways, just wanting to know your experience with whoever you dealt with.
i was hoping to see how you take off the spider injector and how you put it back.... did not happen . can you show that.
I haven't got any more video from this. I filmed this several years ago. To remove the injector if i remember correctly you lift up. The injector nozzles just have the tabs gently depressed and pulled up.
Goodluck!
That's great ... Locally I have only NAPA, Autozone and GM Store... What is your opinion? Which is better? Napa or Autozone? GM Store is really expensive. =s
my truck idled good for a minute then I hit the gas and it starves for fuel around 2000 rpm then idle dies after a couple minutes and it won't start up again did your truck do this too?
Where did you other the parts from can you post the web where I can order em Cuzz auto parts don't carry em no more their discontinue
@AlfredoLaguna-bw4gl This was a lot of years ago, probably not available. Most recently I got one from my local Napa, that was likely 3-4years back. my understanding us now you send away yours to be rebuilt. if you end up finding a source for them please share it here to help out others.
Cheers!
Hi my name is Oceas Santamaria and I have a chevrolet blazer year 1995 and I have a problema with my spider injection I would like to know THE price off It.
You should talk to a local parts store, I think the 95 was a different injector type. Sorry I can't be of any help.
thanks for watching. Cheers!
I like your intake manifold style. My 03 S-10, ZR2 has the plastic plenum style. I wonder the performance/mpg difference. I average 17MPG combined but could drive nicer. I had a 97 GMC Jimmy and it had the plastic plenum also same with my 96 S-10 SS. All were X motors. I've only ever seen the aluminum, long runner style like yours on a Bravada once. I wonder what the story is.
Also, why did you replace poppet style injector with poppet style when the port injector upgrade version is widely available in 2011?
BT
You video is great. Thanks. My question is what auto part store did you get the Spider and other parts. I would be a great help.
Gil Berrios I ordered three line kit and spider online. It was several years ago that I bought it. Sorry I can't be of more help
If i get the CPi do I HAVE to get the nut kit and the fuel line tube things there?
What symptoms were you having to know the spider injection was bad
Excessive cranking to get it started. poor fuel economy, and with the engine off remove the intake pipe to the manifold and manually open the throttle blade, it had a very strong fuel smell.
you can also use a fuel pressure gauge on the test port and watch the pressure drop when you turn the engine off.
hope this helps
Cheers!
Thanks for sharing. Good pointers. --- For a 2000 GMC V6, 4.3 L, does anyone know the typical reliable life of the fuel pressure regulator; and the typical reliable life of the fuel injector / poppits ? Would it be wise to replace the fuel injector / poppits assembly after 200k miles?
As long as you get a brandnew name brand unit, AC DELCO/DELPHI/SMP/etc, the quality and reliability should go hand in hand for at least 100k miles like GM intended and as for replacing it after 200k miles, i would, even if it isnt causing any trouble with hard starts, erratic idle or lack of power. I currently own a 2005 GMC sierra 1500 with the 4.3L vortec with just over 190k miles on it, and i plan on changing the entire MPI unit out soon. It still starts fine, idles steady, no hesitation, just lack of power when it downshifts and at higher RPM as if the typical power robbing a/c was on, but isnt, even though it has a brand new delphi fuel pump, ac delco spark plugs, stock replacement wires, ac delco distributor cap and ac delco rotor. The lack of power could come from the injectors being diry or just plain old and worn out, one try of lucas gas treatment/fuel injector cleaner helped restore some power, but that was short lived. Just be sure to get all brand new gaskets(fel-pro) for everything thats required for the change over, a vacuum leak is the last thing you would want after you have buttoned everything back up together.
@@Bige4u Thanks, Obtained a new Multiport Fuel Injector Assembly and new gaskets. But one of the new gasket that goes around the Fuel Meter Body is thinner than the old gasket. Seems strange that the new gasket may be less effective in sealing than the old one since it is thinner.
I have a 91 s10 taho blazer. I don't have a vortec intake. Do you have a video about how you switched it out four s vortec intake. Our am i just way off base since I'm thinking 93 have the throttle body injector also.
Brian Parker There was an engine option to have the CPI type of fuel injection, it included higher pressure fuel pump, different intake manifold, different injectors and likely other items. My truck came with that option from the factory. Hope that helps.
Thanks for watching.
Cheers
i did thank you for the help how much did your spider gears cost
If you mean to say the spider injector I remember it being expensive like 300 something. That included exchange rate and shipping costs. (I'm in Canada after all)
Hello. Would you have the part number for the unit you ordered? I am having a hard time finding one.
MFG Code: BWD
Part Number: 27096
Description
FUEL INJECTOR
hopefully this will help you