Backfiring- What causes it?
Thread Starter
Heel & Toe
Joined: Dec 2001
Posts: 24
Likes: 0
From: dallas tx
Backfiring- What causes it?
ANy suggestions on how to fix.
1973 stock 350, new carb, maybe vacuum lines crossed?
engined timed, dwell correct, sometimes cuts out when pedle pushed to floor.
any help appreciated.
1973 stock 350, new carb, maybe vacuum lines crossed?
engined timed, dwell correct, sometimes cuts out when pedle pushed to floor.
any help appreciated.
Drifting
Joined: Mar 2001
Posts: 1,514
Likes: 1
Re: Backfiring- What causes it? (cmg1)
Double check that the mark on the balancer is the same as TDC, I've had balancers slip and the mark be way off. If thats correct and timing is setup right either extra fuel in the exhaust or a exhaust valve or valve spring. But either the valve or spring should be making a noise I would think if they were bad.
Scott
Scott
Race Director
Joined: Apr 2000
Posts: 17,676
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Re: Backfiring- What causes it? (Scott78)
I had a backfire problem when I forst bought mine, thought it was kinda cool
when I let my foot off the gas, but got kinda annoying. Rebuilt the carb and it went away :D
when I let my foot off the gas, but got kinda annoying. Rebuilt the carb and it went away :D
Senior Member since 1492
Joined: Aug 2000
Posts: 87,936
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From: Just because I'm paranoid doesn't mean people aren't out to get me...
St. Jude Donor '09
Re: Backfiring- What causes it? (Scott78)
Could be running too rich...unspent gas vapors in exhaust pipes igniting??
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Re: Backfiring- What causes it? (Red73)
1970 Stingray, was actually thinking of your sig pic when I took mine, looks like
I'm gonna have to get down lower next time :D
I'm gonna have to get down lower next time :D
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Senior Member since 1492
Joined: Aug 2000
Posts: 87,936
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From: Just because I'm paranoid doesn't mean people aren't out to get me...
St. Jude Donor '09
Re: Backfiring- What causes it? (MotorHead)
1970 Stingray, was actually thinking of your sig pic when I took mine, looks like
I'm gonna have to get down lower next time :D
I'm gonna have to get down lower next time :D
And, I want to change my answer to what Clem said. :lol: He should know. :yesnod:
