Not really a backfire, just a pop
Ever since I've had my truck (about 3 months now) It has done this. Since I got it I have changed the dist cap, plugs, wires, and checked the timing. The timing was way advanced so I brought it down, then took it up a little due to a test drive. I've done other things but nothing I think would affect this. As I said it has always done it.
Only at idle it seems. It will pop out of the tailpipe. Sounds kinds like a mini-backfire. It isn't constant probably about every other puff from the exhaust. I'm not sure but I think it is coming from the right side pipe (Pass side). Any ideas?
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