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Old 12-11-2022, 08:33 PM
169mph 169mph is offline
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Quote:
Originally Posted by twobjshelbys View Post
I concur. Mine looked like this.

However, I also had another symptom: My rich portion of the DFI tables were beyond 1/2 to 3/4 throttle. Running steady at that speed/rpm/position and then letting off the throttle would result in backfires... I could also get it to backfire by "foot on the pedal" acceleration/shifting like you'd get when merging into highway traffic and then letting off the throttle...

Do you have a backfiring problem?
When I first bought the car it had nasty backfire when decelerating. The flanges connecting the header to the side pipes were leaking. The backfiring went away after I replaced gaskets and bolts. The last few times I drove the car it would backfire when accelerating and decelerating That's what led me to check plugs.

Thanks, Mike
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