Need help before i buy -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > General Technical Discussions > Engines & Drivetrain > Need help before i buy

FS: Wrangler RGB Multicolor Fog Light LEDs: Awesome EffectFS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitRockridge 4WD IS Taking Zone Offroad Suspension Lift Kits

Unread 09-15-2013, 04:53 PM   #1
Registered User
Join Date: Jan 2009
Location: Vacaville, CA
Posts: 23
Need help before i buy

Ok have been searching. I am looking at a 87 wrangler 4.2L, it pretty built rig but has one issue I need some help on before I take the plunge. It starts and idles good, but when driving there is a pretty bad ping to it. What would be the biggest cause to this. I know it means its running lean but need to know if it would be a easy and very cheap fix.

lasvegasjeeper is offline   Reply With Quote
Unread 09-17-2013, 01:37 PM   #2
Wild Wheeler
jokerchief462's Avatar
1989 YJ Wrangler 
Join Date: Nov 2010
Location: Sin City, Nevada
Posts: 2,847
With a carb it could be an adjustment on the mixture screws or a rebuild. Timing has a lot to do with a ping also.
89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.

AF Jeep Club Tail #184
jokerchief462 is offline   Reply With Quote

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.