antijam
CCCUK Member
My '71 base 350 runs well apart from a couple of frustrating problems. It pops and bangs on the overrun and it bogs down when full throttle is suddenly demanded.
I realise Popping and Banging are considered highly desirable by some modern boy racers but I'm and old fart and I prefer a quiet life. I thought possible causes could be ignition timing, fuel mixture, a vacuum leak or maybe a blowing exhaust.
Full ignition advance is a steady 36° and the car starts and runs happily; I've just fitted a new stainless exhaust which made no difference so problem is possibly a vacuum leak (which is going to be tricky to trace, given the comprehensive vacuum system on the car) or maybe fuel?
The bogging I guess is almost certainly fuel. I have a Rochester quadrajet overhaul kit, so a carb strip down, clean and rebuild is going to be the next job, but if anyone has any suggestions as to other possible causes of either problem I'd be very pleased to hear them.
I realise Popping and Banging are considered highly desirable by some modern boy racers but I'm and old fart and I prefer a quiet life. I thought possible causes could be ignition timing, fuel mixture, a vacuum leak or maybe a blowing exhaust.
Full ignition advance is a steady 36° and the car starts and runs happily; I've just fitted a new stainless exhaust which made no difference so problem is possibly a vacuum leak (which is going to be tricky to trace, given the comprehensive vacuum system on the car) or maybe fuel?
The bogging I guess is almost certainly fuel. I have a Rochester quadrajet overhaul kit, so a carb strip down, clean and rebuild is going to be the next job, but if anyone has any suggestions as to other possible causes of either problem I'd be very pleased to hear them.