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Previous Thread Next Thread Print Thread Rate Thread Engine backfire through INTAKE #801115 03/29/07 01:40 AM Joined: Feb 2007 Posts: 2 R Renegad87 OP Need a Spot Ok well let me start from the begining. I had to replace the head on my Jeep due to a crack that it had. The Jeep ran fine before I swaped the head with the exception of smoke out the exhaust. Now with the new head installed I'm having trouble with a backfire out the intake and no power what so ever. I initially thought timing so I checked and adjusted the timing and it has had no effect on the problem. Any help would be appreciated. Jeep Specs: Straight 6 4.2L Re: Engine backfire through INTAKE [Re: Renegad87] #801116 03/29/07 03:19 AM Joined: Oct 2003 Posts: 7,768 Central Texas BigJim Web Wheeler You need to give a better discription of when ahd how it backfires... A constant front backfire indicates a burnt or open valve.. If you stopm pn it and it backfires it is a sign og a power valve not doing it's job. My first guess is you do not know how to set the timing! Vac disconnected? At idle? What is it set at? What year is the 4.2? Big Jim <img src="/forums/images/graemlins/pfft.gif" alt="" /> professional bovine relocation specialist Moderated by  4x4Wire  Hop To Mitsubishi Forums ------  Mitsubishi 4x4 and SUV Tech  Mitsubishi Diesels  Mitsubishi ArchiveToyota Forums ------  Early Toyota Trucks  Toyota 4Runner, FJ Cruiser &...  T100 & Tundra Forum  Tacoma Forum  Toyota Tech ArchiveJeep Forums ------  Jeep Talk  Jeep TechIsuzu Forums ------  Isuzu 4x4 & SUV Talk  Isuzu 4x4 & SUV Tech  Isuzu DieselsKia Forums ------  Kia Talk  Kia Sportage & Sorento TechOff Topic Chat ------  4x4 Gallery  Off-Topic Chat  Recreational Access & Land ...  Politics4xForums ------  Outdoor Gear  General 4x4 Discussion  Tools and Fabrication  General Communications  Amateur Radio  GPS and MapsParts Bin ------  Private Party - Garage Sale  Private Party - Items wanted  Vendors, Hot Deals, Group Buys4x4Wire Back Yard ------  Suzuki Forum  AZ Crawler Crew  Cal-Nev Crew  General Ford 4x4 & SUV Forum  General Dodge 4x4 & SUV Forum  General Chevy 4x4 & SUV ForumFeedback & Testing ------  Problems, Questions, Suggestions4x4Wire Staff ------  Forum Moderators  Problem Threads Print Thread Switch to Threaded Mode 5 Excellent 4 Good 3 Average 2 Bad 1 Terrible View Profile Private Message Follow User Forum Posts View Profile Private Message Follow User Forum Posts

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