back fire
#1
Why is my car ( all of a sudden ) backfiring when I shut it off ? It really doesn't bother me but I almost gave some old doll a heart attack. I just replaced the pump diaphragm in my Dellorto 48mm...small leak...but that is about all that is new to it.
#4
Originally Posted by f1ernie' post='813765' date='Apr 13 2006, 04:54 PM
You have that right sir, but it's been that way for about 2 years now. I can't figure why all of a sudden now ???Could I be running it too rich ?
Have you checked your timing?
Mine used to do it when the timing went out a bit....
#7
Originally Posted by f1ernie' post='813856' date='Apr 14 2006, 06:42 AM
Yea,I guess I'd better, I've never messed with that ,but I'm sure it can't be that hard to adjust... I've got the manuals...Thanks all
#8
If your timing is too far retarded, then it will cause excessive exhaust heat. Then when you shut it down, the heat ignites the remaining fuel and you get a backfire.
I have no emissions, and Racing Beat exhaust. I used to get shutdown popping until I adjusted my timing.
Also, make sure that you have no leaks in your exhaust system.
I have no emissions, and Racing Beat exhaust. I used to get shutdown popping until I adjusted my timing.
Also, make sure that you have no leaks in your exhaust system.
#10
My '79 started to backfire on shutdown and sputter when engine braking at high rpm. The ACV was shot, so I simply pulled it (no emissions testing here...yet) and used a blockoff plate I'd had kicking around for ages. That caused the motor to idle really poorly, so I upgraded to DLIDFIS which solved that issue nicely!
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