Backfire
Thread Starter
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Tuned
Joined: Apr 2006
Posts: 335
Likes: 2
From: N of Houston, TX
Backfire
So I've noticed that my ol' girl will backfire sometimes when she's cold and I accelerate. She never does it when she's been running at operating temp for a bit, but yeah she's done it 2 or 3 times so far. I wanna say it's through the carb but I could be wrong...
Pondering on what to do about this situation.
Pondering on what to do about this situation.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
In most cases, a backfire is caused by combustion happening at the wrong time (when a valve is open). This can be caused by a lean condition or improper timing. Check that the choke is closed while the motor is warming up, and check for any vacuum leaks as they will be more problematic when the motor is cold and needs to run rich. Check your timing, and by this point if everything looks okay you need to run a compression test.
Thread Starter
|
Tuned
Joined: Apr 2006
Posts: 335
Likes: 2
From: N of Houston, TX
In most cases, a backfire is caused by combustion happening at the wrong time (when a valve is open). This can be caused by a lean condition or improper timing. Check that the choke is closed while the motor is warming up, and check for any vacuum leaks as they will be more problematic when the motor is cold and needs to run rich. Check your timing, and by this point if everything looks okay you need to run a compression test.
Thanks for the help, bud.
