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Timing And Carburetor Adjustments On A 1988 Jeep Wrangler YJ 4.2L. 

SouthernJeepand4x4
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In this video I correct a rough running 1988 Wrangler YJ 4.2l with an automatic transmission. I go over timing and, carburetor adjustments using a vacuum gauge, and timing light. And the effects of a poorly tuned engine has on spark plugs.
Thanks for watching.
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#jeep
#jeepwrangler
#yj
#4.2
#4.0
#carburetor
#timing
#engineproformance

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23 май 2021

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Комментарии : 30   
@ItemN9ne
@ItemN9ne 2 года назад
Thanks for the great video, I'm going to use what I learned and see if it helps cure my "running-on" issue.
@madronagroceryoutlet4426
@madronagroceryoutlet4426 Год назад
very informative thanks for the teaching!
@Denver1976Man
@Denver1976Man 2 месяца назад
I have an HEI 1 hot wire ,1 tach. ! vac to advance on the HEI. 1 to the brake booster. That;s it, No vac lines And much less wires. This equals a very clean engine bay. Simple and old school easy, Oh and a Crown 2bbl carb. No elect choke. I rigged a manual choke. GREAT VIDEO Very Very informative!
@ronleblanc3290
@ronleblanc3290 2 года назад
Great video!
@DailyBrewGarage
@DailyBrewGarage 2 года назад
Nice video. I have an 88 as well and the first thing I did was swap the Carter for a Weber 32/36. Most likely will be moving to an EFI after a full rebuild on the engine.
@brianashworth4081
@brianashworth4081 5 месяцев назад
Hey man! I just found your channel and subscribed. I really like your carb and timing video I just watched! I just inherited my brothers 87 yj and it needs some love. I may shoot you some questions this spring when I get started rehabbing it!! Thanks again!! Brian Ashworth
@superwin190
@superwin190 4 месяца назад
I got a 90 yj inline 4.0
@cameronhomer1000
@cameronhomer1000 6 месяцев назад
Don't take this the wrong way, but you need a tripod or have someone else run the camera. You have one of the best car videos I have seen. You know what you are doing and you do it right. Its the photography that needs help. You need more time to make the video so you can pick the camera angles before doing the adjustments and have time to cut and move the camera. I wish I could help you with this, but I am in TN.
@peterk178
@peterk178 2 года назад
Hey where do you connect your front PCv and rear PCv too ? Thank you
@michaelhenry462
@michaelhenry462 3 месяца назад
great video, two questions do you turn quarter turn clock wise or counter clock wise also where do you hook up the vacumm gauge thanks
@user-dc1zu3rx8z
@user-dc1zu3rx8z 10 месяцев назад
Good info. It will help me. Do you have a video further explaining adjusting the sol-vac and fast and curb idle screws?
@southernjeepand4x481
@southernjeepand4x481 10 месяцев назад
No i do not.
@joegomez478
@joegomez478 8 месяцев назад
Is 21deg curb idle or total advance.....and will a hei distributor difer from a stock one according to timing advance....cause I can only go 14deg initial timing at 17 psi on the vacuum gauge......38/38 WEBBER.
@germanlopez758
@germanlopez758 7 месяцев назад
Where can i find electric cable that's connected to the stepper motor, just bought a jeep wrangler yj 1990 and that cable is missing, could that be the reason why my jeep wont start? Can i bypass it since i dont have that cable?
@markfeuerherdt2338
@markfeuerherdt2338 2 месяца назад
I have a 1980 CJ5 Renegade with a 258 4.2 liter inline 6. What kind/brand of spark plugs do you recommend?
@theguydudepants
@theguydudepants 2 года назад
Hey, where do you hook up the vacuum gauge to find good timing advance? Where do you hook it up to tune the carburetor?
@southernjeepand4x481
@southernjeepand4x481 2 года назад
Explained in the video between the 15 and 16 minute mark.
@francoisvll3723
@francoisvll3723 3 года назад
Hi, do you think this engine could run on Holley Sniper EFI with E85 (permanent, not flex fuel) by using the same additive as advertised in your video? Snifer EFI's injectors are not ethanol rated.
@southernjeepand4x481
@southernjeepand4x481 3 года назад
I wouldn't run E85 in this engine.
@waynegarris1055
@waynegarris1055 Год назад
What if the timing marks don't line up if I do try to set the timing its starts to run rough any suggestions
@southernjeepand4x481
@southernjeepand4x481 Год назад
Move the distributor around until it smooths out, that will get you close.
@noahboylen1863
@noahboylen1863 2 года назад
Do you think you could tell me where the fuel pump is wired
@southernjeepand4x481
@southernjeepand4x481 2 года назад
Originally it was mechanical, this one is a aftermarket electric pump.
@kepaloha
@kepaloha 2 года назад
Does a motor like this need an O2 sensor? I'm having issues getting my 4.2L through DEQ, the CO and CO2 are way too high.
@southernjeepand4x481
@southernjeepand4x481 2 года назад
No O2 sensors if it has a carburetor, check the ignition system and the carburetor to make sure they are all working properly.
@pierresimenc2343
@pierresimenc2343 10 месяцев назад
The fuel pump should be on a lower point because it's not a good sucker.
@michaelhenry462
@michaelhenry462 3 месяца назад
oopps i asked to soon I heard you give the answers sorry
@Dieselpwr
@Dieselpwr Год назад
Sell them a carburetor
@krisIsButHurt
@krisIsButHurt 5 месяцев назад
Wow yeah you not know…. Saying you Rich’d the mixture by turning the air mix screws out but that’s adding air which is lean… or maybe you were just breathing too many exhaust fumes by being 750rpm which is near the high rpm circuit drawing from the main jets rather than being fully in the idle low speed circuit Try again dude
@mrlrgmouth3692
@mrlrgmouth3692 Год назад
25° sounds like it's way too advanced lmfao
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