Bosch K-Jetronic Fuel Distributor Rebuild // 1985 Porsche 924 Restoration Project // Part 17
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- เผยแพร่เมื่อ 28 ส.ค. 2024
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In this episode I'm rebuilding my K- jetronic fuel distributor. It's a part of Bosch K-Jetronic Continuous Injection System (CIS) used on these cars. I got my kit from Missingparts.de. It comes with a detailed instructions and it's pretty straightforward. One of the things I find interesting is that it encourages you not to use any sealant at first as it didn't came with it from factory. I'll add the sealant if it end up leaking. Looks like somebody opened it up before me and managed to lose one of the small filters. I'll have that ordered.
In the next episode I'll restore the whole unit.. remove the rust, paint it, electroplate the bolts etc.
Thank you for watching!
Previous part: • Brake Booster & Master...
It has come to my attention that there shouldn't be a spring behind the plunger on these cars. So if your car doesn't have one, you're good.
Thanks for the heads up. I'm getting ready to do this job. I've ordered a rebuild kit from a place called Sierra Madre Collection.
I just noticed this comment now. I searched for over an hour around my workbench for a spring that wasn't there in the first place! 🙂
@@Yurikurekalol I kinda had a similar situation... for some reason i thought mine fell out when I removed my distributor from the car and I couldn't find it, so I bought a new one(one you see in this video)
@@RestorationApprentice It's a great video with the clearest explanation I've found. I do have one question though, when the fuel distributor is being closed again, does it need to be tightened to a specific torque?
@@Yurikureka Kit instructions just states to snug them down by hand.
I'm really liking the disassembly and rebuilding without any speaking. Looking forward to watching your other episodes. Thanks for making these.
Thank you for watching!
Nice to see another CIS fan. This takes patience. The fun is the high end in the cars.
Thank you for watching!
Love your videos mate. I recently picked up a 79. Really enjoying the detail and dedication you have with your restorations. Keep them coming.
Thanks, will do!
Hope all is going well, looking forward to your next video!
All is good, thank you! I've just been super busy with work. I'll try to upload the video by the end of this week.
Outstanding as always but surprised no paint or sealant.
Thank you! I opted for just a rebuild in this video. In the next one I will be restoring it visually along with the whole unit with air flow meter and filter box.
Instructions say to try to assemble it without any sealant... Then if it leaks, to add it. It didn't come from factory with the sealant.
You can check out full restoration playlist here: th-cam.com/play/PLcaaK0W2qjqy-Wk0MA90zfVDlhg013lVV.html
Excellet job....great to learn the steps to do the same in a BMW e28 518i. Thanks
Glad you liked it!
oh weird. rebuilt mine for a 5 cylinder. i thought they couldnt come apart that much without damaging the plate in the middle. will take another look into it thanks!
Thanks! This kit comes with plate replacement.
A next great Job and nice Video about the nice Porsche auf jeden Fall weiter so 👍❤️👍
Thank you, my friend!
What lube / grease product did you use to grease the middle plunger? thank you
Any kind of thin oil, like sawing machine oil.
Nice job. Surprised that you didn't paint there housing while it was apart
Thank you! It will be done in the next episode, when I restore the whole unit, witrh the flow meter and filter box. I decided on just a rebulid in this one.
Excellent video, can you let me know the oil you put on the plunger at 10.33 sorry if it's obvious thx.
Instructions asked for "fine oil" which is very thin oil.
перебираю сейчас такой на вольво 760 b28e/ видео очень пригодилось
Thanks!
Good one mate, very clear, but you really sped it up around rebuilding the plunger, and does the plunger need to be set at certain height ( looks like it’s got adjustment )
Thank you! No, there are no adjustments on the plunger.
Great. Thanks for replying- I have a 300SL 1988- the fuel mixture is very rich, keeps fouling the plugs with soot, tried adjusting the mixture screw but no good. Could the fuel distributor need overhauling? The had been sitting for a couple of years - any thoughts please. Thanks
@@donjohnson4368 my suggestion is firstly to check to make sure that the warm control pressure is correct after warm-up. If the control pressure is too low after warm-up the air/fuel mixture will be too rich the whole speed range and that can cause the spark plugs to be flooded with fuel.
What problem were you trying to fix with the rebuild? Were there any obvious issues found during disassembly? Did the rebuild fix the problem?
Doing a full restoration so this is one of the many tasks I had to handle. A bit of crud and some very old seals.
Great video! Really helped me out with my 1985 vw cabby. Anyway you still have the link for where you got those really small filters that you got out with the screw?
Thank you for watching, glad to hear it! I still haven't bought them... I've seen them on one site from Australia but don't know it from the top of my head.
Great job, but after many hours working, using again those old filters......there are no spares?
Filters are metal, so they can be cleaned. I'm missing one so I'll buy spares anyway.
Can you provide a link for the repair kit please.
Missingparts.de
I have a 1977 Porsche 924, I was wondering if the spring you pull out at 3:04 is needed with my model. I pulled mine apart and there was no spring, everything else seemed to match up and I have every other piece.
Probably not... not sure mine need it too. I was positive I lost mine so I bought new one... but maybe it wasn't there at all.
@@RestorationApprentice Thank you, I’ll put it back together with out it for now. If that doesn’t solve the problem where did you get the spring?
What products are you using after the bath before reassembly? I can’t see the labels.
Just a brake cleaner, to clean it a bit more and a bit of fine machanical oil for the plubger.
I know you're not sponsored but which kit did you use? Salvox, cis-jetronic, or k-jet specialists?
I got it from Missingparts.de from Germany. I think they make it.
@@RestorationApprentice Very cool to know there's another option out there.
Actually, after some further research, it looks like my ‘79 does not have a spring.
Looks like none of them does.
Zdravo, druze. Imam problem sa filterima u razdelniku. Restauriram jedan Mercedes 450SL sa K-Jetronicom. Fale mi dva filtera za u gornju komoru. Jel znas dge mogu da ih nadjem? Pozdrav!
Pozdrav drug! Nasao sam bio, pa cu potrazit na kompu, javim.
@@RestorationApprentice Hajde, molim te i hvala ti na brzom javljanju!
@@mercedeske k-jet.biz/product/fuel-distributor-outlet-filters-4/ evo ih. Ima i pakovanje od 6 kom
@@RestorationApprenticeHvala puno. Ziv bio!
Did the distributor leak any gasoline? I did rebuild for a 6 cylinder MB and it leaked without the sealant
Haven't tested it yet but it probably will, as with most people. But instructions that comes with the kit encourages you to try without sealant first.
Hi I've just watched your video of the k tronic fuel distributor, I own a 2.8 capri and the problem I have is the car is slow to start from cold but once running will eventually rev up but when you drive down the road you can put your foot to the floor and there's nothing no power is this the fuel distributor failing to push fuel to the injectors many thanks
Thank you for watching! Sorry, I'm not sure... I still don't know much about these distributors, I just followed instructions that came with the rebuild kit.
Check your fuel pressure. Sounds like a failing fuel pump or a partial blockage. Dismantling the distributor is a LAST resort.
Thanks for the info I took the distributor off and drowned it with carb cleaner and left overnight it's back on the car but haven't tried starting her yet as I've stripped out the thermostat but I'll let you know 😁
I know you posted this a year ago, so hopefully you remember. 😊 At 3:00 you pull a spring out of what looks like the barrel, but I never see you put it back in. Mine didn’t have a spring and I don’t see one in my Bosch Fuel Injection book.
I have it my pinned comment... Turns out there should not be a spring just a piston
@@RestorationApprentice thanks! I see it now.
already tested it ? I am wondering if it leaks witout the sealant
Not yet. If you don't want to potentially pull it apart for the second time , just put the sealant. I see no harm in it.
Did it seal ok without the sealant on the ,idle plate. I’ve just ordered the same rebuild kit for my 5 cylinder so I’m keen to know. Will be using this video for reference
I havn't tested it jet. I'm working on rebuilding the engine now.
@@RestorationApprentice I’m gonna do mine when the kit comes. Got a ongoing issue that once the car has been driven for 20 minutes it goes all jerky and revs go all over the place. Tested fuel pressures had my WUR rebuilt. Only thing I’ve not done is the metering head
Thanks..
Thank you for watching!
Find it strange there wasn’t any new filters, those didn’t look that different to me. Any how, good vid
Not sure which filters you meant?
@@RestorationApprentice The filters in the lines to the injectors. You were missing one of them. You put them in at 14:36
I was told that you cant take those apart because they have a certain torque and they will leak afterwards.
From factory they don't come with any sealant... It's common practice to seal two halves with a thin film of sealant if taken apart. I tried to not use any, and once tested I can add it if necessary.
Have you needed to add sealant?
I'm doing this project on my 1985 Scirocco. Has your unit leaked with no sealant? I'm torn whether to use sealant or not.
Haven't tried it yet. I'll remove the unit and reseal it if it ends up leaking.
@@RestorationApprentice Thanks - I'll probably do the same. Good luck.
At 5:52 you removed the o ring from one half of the distributor, but both halves have the same king. Did you remove from the other side as well?
I can't remember now. I replaced every o ring that came with the kit.
Btw, did you manage to get your piston unstuck?
@@RestorationApprentice I did, thanks for the mallet suggestion. Had to knock it all around and finally got it out. It was the whole cylindrical housing, not just the central portion. I tried matching the rings which came with the kit and couldn’t be sure if there were enough, so I didn’t take it out. I’ll look again to be sure. Thang again for all of your help.
Just one question! There is a lot of kits on the page! What specifiq i should buy in order to restore my porsche! Mine is the 1977 na 924 047 k-jetronic distribuitor
I'm not sure, you should write them an email, they are very responsive.
@@RestorationApprentice thank you i will do! I have an unused core on my hgarage i could restore it! Already subscribed to your channel! Keep up with the videos! Cheers
@@IsraelSocial Thank you!
Where did you buy the bolts?
It all came with the kit.
i ned help/ where i can find this new kit to passat B3 9A engine??
I'm not sure... check distributor part number and google it, it's easier to find it that way
👍@@RestorationApprentice
Are those Distributors the same as the VW Rabbit CIS Fuel Distributors?
Very similar.
So ive been browsing hoping to find someone who applies sealant to the halves. I cant seem to keep mine from leaking.
Im doing mine on a benz but you and i donit exactly the same way and i also get my kits from missing.parts.
Yeah, definitely put some sealant on it if it leaks.
@@RestorationApprenticedo you know what sealant can be used?
@@maxkaufel4715 Loctite 574
@@maxkaufel4715 or maybe even better Loctite 518
@@RestorationApprentice yeah these are the ones im considering right now. I read about 515 but thats really expensive and hard to obtain for me.
Can you give me the internet web site where you find the kit for the k-jtroinc
Sure, it's missingparts.de
What type of oil did you use on the plunger?
It's called Feinöl in German, I guess it's like a fine oil for bike gears.
@@RestorationApprentice is 3and1 oil ok?
bonjour ! faut-il faire des réglages après le remontage ? merci :)
Thanks for watching! There is no adjustment from factory, but there is a mod you can do so it's adjustable.
@@RestorationApprentice so if I disassemble the part, no problem to reassemble it in principle? (by the way, I love your videos)
Thanks! Yeah, pretty simple.
without leakage at the large plate ???
We will see... Haven't tested it yet.
@@RestorationApprentice the best part of the trip is coming (Jim Morrison)
taking that completely apart is a big no no its gong to leak
Well, they do make rebuild kits so you can take it apart or send it to them for a rebuild. They advise to not use any sealant at first...if it leaks you can seal two surfaces with Loctite 518 or similar.
When is the next video??
Should be out early next week
@@RestorationApprentice ?
@@RestorationApprentice hey! We are waiting the next episode.
@@moisessancho1365 I'm working on it, I promise! It's just been crazy busy few months for me, and I do this in my spare time. I'll try to have the new video out next week.