 what does this sound like to you, tuning help needed |
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| G e o r g e |
 Jul 1 2008, 12:16 AM
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Dr  Group: Members Posts: 1,905 Joined: 20-September 05 From: Southern Cal Member No.: 4,832 Region Association: None 
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Setting my engine timing at 28 degrees at 3500 rpms I get backfiring/ popping
can this be caused by fuel starvation? or is this because of another issue i'm using the mark on the fly wheel to set timing any tips on trouble shooting? |
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| Jake Raby |
Jul 1 2008, 06:40 AM
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#2
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Always verify mechanical integrity first.. This means a leak down and compression test are done first.
If the engine checks out with no mechanical issues then I'd say you more than likely have a funky injector and that causing a single cylinder to lean out. if it does this on acceleration, try both low and high speed ACCEL enrichment and see if it gets better. |
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Posts in this topic
George H. what does this sound like to you Jul 1 2008, 12:16 AM
Phoenix 914-6GT Well, I'm kinda going through the same thing r... Jul 1 2008, 12:19 AM George H. not carbs
but i can increase fuel values Jul 1 2008, 12:45 AM Phoenix 914-6GT fuel injection? Hmmm... I don't really know wh... Jul 1 2008, 01:16 AM jmill Is it popping out of the intake or exhaust? Lean ... Jul 1 2008, 01:20 AM Dr. Roger is your ignition system healthy?
custom setup? Jul 1 2008, 02:36 AM
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