Backfire
Thread Starter
Burning Brakes
Joined: Sep 2006
Posts: 851
Likes: 10
From: Palm City, FL
Backfire
Highway driving, 80 mph or so, I take my foot completly off the gas while leaving the car in gear to coast up an exit ramp or whatever. While coasting like this, I hear a popping or backfire through the exhaust. It will only do it while still at a decent speed... It wont do it once speed is below 60.
What could this be?
If I am unclear let me know where and I will try to explain better.
What could this be?
If I am unclear let me know where and I will try to explain better.
Racer
Joined: Nov 2006
Posts: 310
Likes: 0
From: Oak Park IL
Backfire ---
My car is backfiring at the same time and also when I start her but mostly when I take my foot off the gas. I just replaced the carb, wires and distributor cap + rotor and exhaust system once I fire her up I will let you know if this fixed the problem.
My sugestion for you (from a novice) is to review your carb, exhaust and wire config. possibly change out your plugs but I'm not an expert just new to motors in general and limited knowledge based on my similar problem.
good luck.
JC
My sugestion for you (from a novice) is to review your carb, exhaust and wire config. possibly change out your plugs but I'm not an expert just new to motors in general and limited knowledge based on my similar problem.
good luck.
JC
Thread Starter
Burning Brakes
Joined: Sep 2006
Posts: 851
Likes: 10
From: Palm City, FL
Originally Posted by delamorajc
My car is backfiring at the same time and also when I start her but mostly when I take my foot off the gas. I just replaced the carb, wires and distributor cap + rotor and exhaust system once I fire her up I will let you know if this fixed the problem.
My sugestion for you (from a novice) is to review your carb, exhaust and wire config. possibly change out your plugs but I'm not an expert just new to motors in general and limited knowledge based on my similar problem.
good luck.
JC
My sugestion for you (from a novice) is to review your carb, exhaust and wire config. possibly change out your plugs but I'm not an expert just new to motors in general and limited knowledge based on my similar problem.
good luck.
JC
Thread Starter
Burning Brakes
Joined: Sep 2006
Posts: 851
Likes: 10
From: Palm City, FL
Originally Posted by gerry72
You have a leak in your exhaust system.
I just dont see where I can have a leak... any ideas? Or is this backfiring possibly something else?
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Instructor
Joined: Nov 2004
Posts: 194
Likes: 0
From: Appleton Wi.
In the past I had the same situation. I was told by a very confident person that it was lean on deceleration. I tweeked the idle mix screws a tad and it went away. There could be other fixes, like recurving your dist. or richening the low speed jetting. But mine was idle mix. Good luck.
TJ
TJ