Re: Popping sound...?

[Chris <Ckor1@student.monash.edu.au>]

 I have the exact same problem as described on my '81 Audi 80 5+5 (4000),
when the engine is cold and full throttle is put on quickly the engine bogs
down and makes a loud popping noise which seems to come from the inlet
manifold. The suggestion about the fuel pump going bad may well be true as
the problem has only been evident since my fuel pump has become very noisy.
Coincidently I just had new injectors put in before hand. The only problem
is here in Australia fuel pumps for my car seem to be rediculously expensive
so i hope it doesn't give up soon.

Chris

5 cyl '81 80 5+5 FWD

-----Original Message-----
From: Mark & Michelle Sousa <mps@netpci.com>
To: quattro@coimbra.ans.net <quattro@coimbra.ans.net>
Date: Monday, September 15, 1997 4:12 PM
Subject: Popping sound...?



>In my trouble shooting efforts I have discovered, that when the car is
>started
>(cold start) and I rev the engine (moving throttle linkage with hand)
>the engine
>will bog down and make a loud "pop" sound, seems to come from arount
>the throttle body area, it will to do so until it warms up, after that
>it runs like a charm. I had an exact experience like this before with my
>wife's Camaro, when I stepped on the gas I would get a hestitation
>(which I also do with the Audi) then I would hear a "pop". Turns out the
>fuel pump was going bad and wasn't pumping
>fuel at the right pressure. I wonder if the Audi is having the same
>problem. I do
>have a pump on order so hopefully it will fix it. Has anyone had this
>same type of exp?
>
>Mark
>90 200 T FWD
>