Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem
1979 Firebird Trans Am aka the turdbird has problems
novadude:
Secondary air bleed tube would have no effect on idle, but it would definitely affect WOT secondary metering.
Ponchonutty:
So this is a late 80’s Chevy style carb body with the top of mine after installing the missing secondary cam. Once the o2 sensor warms up, you can see she’s now twice as rich as it once was. So, rebuild number 3 on the way. DO NOT SEND A CARB TO EDEN, NC!
https://youtu.be/KID_MnNmRJ8?feature=shared
Ponchonutty:
Well my stopped by my buddy's shop to see what all he's found so far. He said he was appalled at how dirty the inside was. You can see the old gasket that was reused. He said chunks of carbon fell off it when removed. Also the jets all look used. He said although there's nothing technically wrong with reusing parts, a "professional" would never do that. Everything is nice and super clean now with no old residue left. He said "no wonder why Classic Carb Rebuilder said if this is opened, warranty is voided." I told him I already sent it back once and he denied warranty saying my fuel was contaminated. He then asked how many tanks of fuel I ran through and I said at least 2. He said every fuel sample he's taken is fine.
Ponchonutty:
Other side of gasket
Ponchonutty:
Looks good and clean now. Buddy also said it looked like subpar parts were used too
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