Popping in Exhaust
06-16-2008, 06:57 PM
#1
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Car: 1983 Recaro T/A
Engine: L69
Transmission: MM5
Axle/Gears: 3:73
Popping in Exhaust
Alright, so when I did my plugs back in Dec, I noticed my firing order was wrong. Cylinder 5 and 7 was mixed up. I corrected it and a popping in the exhaust started. So today I got to work with some spark plug wires I had. I changed them all and the popping was still there. I sprayed water on the coil and around the cap and nothing. So I pulled the #7 cylinder wire and closed the gap on a junk plug and started the car up. No popping. I'm thinking I may have a stuck exhaust valve or an exhaust valve that wont seat correctly.
Need help on this!
Need help on this!
06-16-2008, 07:06 PM
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Car: currently a 91 G92.
Engine: 305TPI
Transmission: Borg Warner WC 5 speed
Axle/Gears: 3.42
Re: Popping in Exhaust
Perhaps you can confirm your suspicion of a valve that is not seated properly by doing a compression check and a leak down check.
06-16-2008, 07:14 PM
#3
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Car: 1983 Recaro T/A
Engine: L69
Transmission: MM5
Axle/Gears: 3:73
Re: Popping in Exhaust
Thanks for your response! I will be hunting down a Compression tester to check it out.
06-16-2008, 07:26 PM
#4
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Re: Popping in Exhaust
My perception is if it started after you fixed the firning order...you might want to rethink the "fix" 
06-16-2008, 07:42 PM
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Car: 1982 Z28
Engine: 385ci w/carb
Transmission: TH350 w/3200ish Stall
Axle/Gears: 10 bolt :( 3.23 gears w/ posi
Re: Popping in Exhaust
Are you sure it wasn't 4 and 7 mixed up? don't some cams swap the 4 7 firing order? Just asking since your sig says cammed and it started after you swapped the wires.
06-16-2008, 09:34 PM
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Car: 1983 Recaro T/A
Engine: L69
Transmission: MM5
Axle/Gears: 3:73
Re: Popping in Exhaust
I'm really lost when it comes to the car having a cam or not. The PO said that the guy before him said it had one but the guy I bought it from wasnt sure. I thought I heard the idle but Im thinking its a miss. Im gonna do a compression test this week and see whats up.
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