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  1. Engines & Drivetrain
    Can someone assist? I just recently changed a head cylinder (bank 2) passenger side. It ran great at 1st. Now Poor idle, one day lean condition, another day rich condition, O2 data all over the place depending on the day. Noxious smell when running. Doesn't smell like gas, nor sweet but...
  2. YJ Wrangler Technical Forum
    I have been grappling with this issue for quite a while. Fully stumped at this point. There have been idle issues with this jeep since the get go. A little back story. This jeep sat for 10 years not moving. I replaced, fuel pump, tank, filter and ran marvel oil and epr through it to get it...
  3. YJ Wrangler Technical Forum
    Good Evening. New member here, I've joined to get info to help while my son and I fix up his '93 YJ. We have been tackling a rough running rich fuel condition since he bought the jee[, and we think we came across something that I haven't seen while searching the forums. Sorry if I missed it but...
  4. Engines & Drivetrain
    Ok so i have a 98 xj and i recently rebuilt the engine. DNJ full rebuild kit, header, high flow cat, and flowmaster 40. Now that the engine is back in it runs horrible, when i start it it feels like it has a race cam in it and runs extremely rich. the tach bounces around and if i try to rev it...
  5. YJ Wrangler Technical Forum
    My 1988 wrangler seems to be running too rich- you can smell it in the exhaust, and when I floor the gas while stationary the engine stalls. Ive got an edelbrock 1406 carb, and ive tried adjusting it but if i turn the screws any leaner, the engine starts to sputter and die. Vacuum is around...
  6. Engines & Drivetrain
    My 1988 4cyl. YJ sat lifeless from 2006 to last week. She was slowly, and painfully parted out when funds were tight. Now I'm back in the game! I replaced all gaskets and seals. New ECM, coil, optima yellow top, MAP sensor, frontpipe, cat, muffler, and tailpipe, plugs, EGR, EGR tube, fuel pump...
  7. ZJ Grand Cherokee Forum
    hey guys, I just moved to va from ohio and about 2 months ago I replaced my fuel pump with a gmb assembly unit off amazon ($60 shipped to my door:thumbsup:), when I replaced it I did drop the tank and cleaned it out completely. now i just started having a hesitation start yesterday, once I back...
  8. YJ Wrangler Technical Forum
    Hey guys I am having a huge problem with my jeep. This is the first jeep I have owned so I am kinda in the dark about them. My problems I am having is after a year a driving without any problems all the sudden it died while going about 40 MPH then it cranked right up after that it start back...
  9. Jeep CJ Forum
    When I crank my 304 in my cj7 the motor lopes for about 5 minutes then straightens up and runs smooth. Carb is new rebuilt, I guess this means its running rich so what do I need to do to have a smooth idle from start. Has- Electric fuel pump HEI No headers
  10. Full Size Jeep Forum
    I have an 87 grand Wagoneer with a 2bl carb on a 360 that I am pretty sure is running crazy rich. It failed nox by 1000 points and is pretty much a gross polluter. New carb? Still smells like CRAP and still won't pass. I tryed leaning it out but I don't think I did it right because nothing...
  11. YJ Wrangler Technical Forum
    Quick question, 4.2L -When I'm cruising between 2-3000 rpms sometimes it's a little stinky like gas, does this mean it's for certain I am running rich? or can something else be the culprit? BTW- I AM running a charcoal canister that is to the best of my knowledge running properly. Thanks, bluedaffy
  12. Jeep CJ Forum
    In late February of this year, I installed an MC2150 along with a TFI distributor/coil upgrade. It has performed perfectly until two weeks ago. Two weeks ago, I swapped my 4.2 head for a 4.0 head and now I'm blowing carbon and running rich. Plugs are sooty with carbon. It still runs well, but...
  13. XJ Cherokee Technical Forum
    I have had major problems with my Cherokee 4.0 6 cyl. country for the last month. I have had my car in one of the best shops in Houston and they can't seem to find the problem. It is running rich and is heating up the manifold red hot. All the common checks have been made they can't resolve...
  14. ZJ Grand Cherokee Forum
    I have a 95 V8 5.2 and ive been have some exhaust problems.... Its blowing white smoke that just smells of fuel and the mpg is depressing. When I put my hand to it, it gets covered in what seems like fuel, also oil smells a little like gas, i noticed today a milky/creamy fluid too in exhaust tip...
  15. YJ Wrangler Technical Forum
    nj got rid of all mech/safety inspections but still need emissions.:eek: Took my 88 YJ in to the state inspection facility in flemington (run by Parsons) and noticed they still measured door height and i realized and confirmed after searching that we still have High Rise req's. FYI...
  16. Engines & Drivetrain
    It to spits and sputters when cranking after its been sitting for awhile. Also smells like it flooding and exhaust smells extremely rich. Once it stops it will run fine with no trouble idling at all. Any advice would be greatly appreciated. THANKS
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