4Kq fueling issues

Edward R. Wendell IV erwendell at mac.com
Mon Nov 15 14:20:32 EST 2004


I don't know if the 4k suffers from the same problem, but on the 5k 
there is a coating on the inside of the tank that flakes off and plugs 
up the intake screen on the pump. This results in lot of noise from the 
pump and an engine that only runs for about ten minutes at a time if 
stationary and even less if moving. The Audi recommended fix is to cut 
off the screen and let the junk pass through the pump. It's a lot 
easier to replace the fuel filter than open up the tank to get to the 
pump. Apparently no amount of cleaning will stop the problem. I had 
thought that there was a certain amount of fiction in this scenario but 
I had a textbook case on an 89 200 about a year ago.

If I recall correctly the 4k pump is external, but I would imagine that 
there is still a screen on the pickup inside. I don't know if the 4k 
tank has the same coating inside either.



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