Backfiring upon decel
#1
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Backfiring upon decel
Ever since I had my LT's, ORY & exhaust installed, the car backfires, sometimes loudly upon decel whether the car is in gear or I toss it in neutral.
Here's the exhaust system.
Here's the only dyno chart that car has, & that's with the new exhaust & no LS1 edit tune.
I've also noticed there always seems to be moisture in my exhaust tips lately.
I don't know if that's due to the 50 degree days were having now.
The coolant level is right where it should be.
Does anyone have any suggestions as this is driving me crazy & I'm afraid one of these pops will ruin my exhaust valves or muffler or both.
Thanks.
Here's the exhaust system.
Here's the only dyno chart that car has, & that's with the new exhaust & no LS1 edit tune.
I've also noticed there always seems to be moisture in my exhaust tips lately.
I don't know if that's due to the 50 degree days were having now.
The coolant level is right where it should be.
Does anyone have any suggestions as this is driving me crazy & I'm afraid one of these pops will ruin my exhaust valves or muffler or both.
Thanks.
#2
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It's called raz. Raz is unburned fuel lighting off in the exhuast pipes. A lot of folks like it. If it's troubling you that much, you can probably remedy it by getting a tune, or just stick a quiet muffler on there.
#4
Originally Posted by ButchN
Ever since I had my LT's, ORY & exhaust installed, the car backfires, sometimes loudly upon decel whether the car is in gear or I toss it in neutral.
Here's the exhaust system.
Here's the only dyno chart that car has, & that's with the new exhaust & no LS1 edit tune.
I've also noticed there always seems to be moisture in my exhaust tips lately.
I don't know if that's due to the 50 degree days were having now.
The coolant level is right where it should be.
Does anyone have any suggestions as this is driving me crazy & I'm afraid one of these pops will ruin my exhaust valves or muffler or both.
Thanks.
Here's the exhaust system.
Here's the only dyno chart that car has, & that's with the new exhaust & no LS1 edit tune.
I've also noticed there always seems to be moisture in my exhaust tips lately.
I don't know if that's due to the 50 degree days were having now.
The coolant level is right where it should be.
Does anyone have any suggestions as this is driving me crazy & I'm afraid one of these pops will ruin my exhaust valves or muffler or both.
Thanks.
--Bill
#5
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Originally Posted by Pimp_Nas_T
It's called raz. Raz is unburned fuel lighting off in the exhuast pipes. A lot of folks like it. If it's troubling you that much, you can probably remedy it by getting a tune, or just stick a quiet muffler on there.
I'm used that "burbling" & the Hooker I have is quite quiet, until you stomp on it.
It's this: http://home.comcast.net/~ta2000/dynoflame.wmv
But I found the cause of the problem.
The air pump bolts, both sides, collector bolts & band clamp from the ORY to the muffler were all loose.
Tightened it all up, no more tick, tick, tick, exhaust noise & no more backfires like what you saw in the video.
One air pump bolt on the driver side header was frozen.
I used PB blaster, it started moving, got it almost all the way out then snap!
Thanks for the assistance.
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I hope with your new exhaust system you are going to park your car for the winter. I'm from Florida, I didn't realize the damage that the salt does to the undercarriage of a car.
#7
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Originally Posted by bigdsz
I hope with your new exhaust system you are going to park your car for the winter. I'm from Florida, I didn't realize the damage that the salt does to the undercarriage of a car.