I have fully adjustable short arm lift (Currie). After I took my TJ and had laser aligned all the way around it jumped about 2 mpg. It was amazing how far things were out of alignment.
I did a similar upgrade on my '91 Land Cruiser (4.0L I6) with 2" lift an 33" tires, otherwise stock. Went from stock 1 hole injectors to 12 hole. I noticed improvement in part throttle response, a little bit more power to maintain speed, and 1-2 mpg more depending on city/hwy mix.
Wonder why your mileage is so bad in both before and after. My 1997 4.0 gets 18mpg. I just cleaned my factory injectors with a ultrasonic cleaner using Lucas injector cleaner. I was having leak down issues causing long cranking. The cleaning made a HUGE difference. It starts right up and runs a lot smoother. I will have to see if mileage improves.
They ran well for us with the jeep being daily driven for about 6 months until we sold it and have started repairing another TJ. I plan to do the 12 hole injectors again to verify the mpg results we saw. Will be a future video once we get the time.
Any concerns with the heat shrink and solder crimps under normal operating temperatures? Any possibility of the solder reflowing due to the heat from the manifold? They seem to be a very low melting point if a heat gun can flow the solder.
@chrispurvis907 Good question, we have been using them for many years now for pretty much all of our connections and never seen an issue like that. Nor have I noticed them being soft. Anyone out there experience something like that?
@randyb2505 yeah we like them just didn't see the mpg result people talk about. I think we had some injector issues before so certainly ran better with the new ones
HIIII so I watched your video to help me do my ball joints by myself! And I totally did them thanks to you! But I can’t get my passenger side axle shaft back into place. It’s the same axle, there’s nothing lodged inside from what I see. Is there ANYTHING you can do to help 😭 I’ve been at this for a week. And I move in a few days and need my Jeep back on its feet.
The shafts can be a pain. Make sure the splines are clean sometimes there can be stuff in the axle tube that they pick up. As you try to put them inyou will need to try to angle the spliced end up as the hole in the carrier is raised up off the bottom of the axle tube a .25" or so. Worst case scenario is that you may have pushed rust/dirt/etc from the bottom of the tube up against or in the hole in the carrier. In that case you will need to pull the diff cover and clean out the splines on that side. You might need to remove the spider gears to do that though.
I was not able to see what time of year it was when you were doing your mileage tests with the new injectors. If you were running winter blended fuel for the original injector test,and non-winter blended fuel while testing the new injectors,there was probably no actual gain in mileage. In fact you may have lost mileage. I am not convinced you did an accurate apples to apples comparison.
In this area winter blend starts to come around in Sept. The base line testing was November and December with the Injector test in January. We have another TJ now, an 01, we are going to actually do the same test at some point to see if we get the same results. Being that I dont have to change out the pigtails I plan on setting a baseline, swapping to the new injectors for a month or two then back to the stock injectors.
I have fully adjustable short arm lift (Currie). After I took my TJ and had laser aligned all the way around it jumped about 2 mpg. It was amazing how far things were out of alignment.
I'll have to try this on the next TJ mileage project. Working on the baseline results right now.
I did a similar upgrade on my '91 Land Cruiser (4.0L I6) with 2" lift an 33" tires, otherwise stock. Went from stock 1 hole injectors to 12 hole. I noticed improvement in part throttle response, a little bit more power to maintain speed, and 1-2 mpg more depending on city/hwy mix.
Wonder why your mileage is so bad in both before and after. My 1997 4.0 gets 18mpg. I just cleaned my factory injectors with a ultrasonic cleaner using Lucas injector cleaner. I was having leak down issues causing long cranking. The cleaning made a HUGE difference. It starts right up and runs a lot smoother. I will have to see if mileage improves.
He could be driving local roads only vs highway or mixed driving.
I have cracked and leaking down injectors on my 02 wj with the 4.7, definitely wanna try these since reman injectors aren’t that much cheaper anyway
They ran well for us with the jeep being daily driven for about 6 months until we sold it and have started repairing another TJ. I plan to do the 12 hole injectors again to verify the mpg results we saw. Will be a future video once we get the time.
Any concerns with the heat shrink and solder crimps under normal operating temperatures? Any possibility of the solder reflowing due to the heat from the manifold? They seem to be a very low melting point if a heat gun can flow the solder.
@chrispurvis907 Good question, we have been using them for many years now for pretty much all of our connections and never seen an issue like that. Nor have I noticed them being soft. Anyone out there experience something like that?
Thank you!
No problem, we are actually going to try another set of these in a 01 TJ we just received, when I get the time.
@@TabooCustoms are you still happy with him? I have a 98 4.0 stock and just want to give you a little extra boost nothing crazy thanks again!
@randyb2505 yeah we like them just didn't see the mpg result people talk about. I think we had some injector issues before so certainly ran better with the new ones
HIIII so I watched your video to help me do my ball joints by myself! And I totally did them thanks to you! But I can’t get my passenger side axle shaft back into place. It’s the same axle, there’s nothing lodged inside from what I see. Is there ANYTHING you can do to help 😭 I’ve been at this for a week. And I move in a few days and need my Jeep back on its feet.
The shafts can be a pain. Make sure the splines are clean sometimes there can be stuff in the axle tube that they pick up. As you try to put them inyou will need to try to angle the spliced end up as the hole in the carrier is raised up off the bottom of the axle tube a .25" or so. Worst case scenario is that you may have pushed rust/dirt/etc from the bottom of the tube up against or in the hole in the carrier. In that case you will need to pull the diff cover and clean out the splines on that side. You might need to remove the spider gears to do that though.
I would have stuffed a rag in the throttle body intake. I'm cringing the whole video waiting for something to fall in.
I was not able to see what time of year it was when you were doing your mileage tests with the new injectors. If you were running winter blended fuel for the original injector test,and non-winter blended fuel while testing the new injectors,there was probably no actual gain in mileage. In fact you may have lost mileage. I am not convinced you did an accurate apples to apples comparison.
In this area winter blend starts to come around in Sept. The base line testing was November and December with the Injector test in January. We have another TJ now, an 01, we are going to actually do the same test at some point to see if we get the same results. Being that I dont have to change out the pigtails I plan on setting a baseline, swapping to the new injectors for a month or two then back to the stock injectors.