Question about 1989 Audi 200
What you have seems like have a residual fuel pressure problem in which the fuel drain out of the line and back to the fuel tank. This creates a vapor lock situation when the car is warm. These CIS fuel systems have a hard time purging air from the system if the system is warm.
Perform a check valve test. The factory spec for fuel pressure is 75 psi running and 30 psi after 10 minutes when shut off. If your system fails to hold pressure replace the check valve. This screws into the top of the fuel pump. It is not necessary to remove the fuel tank on these car to remove the fuel pump and get to the check valve.
In the trunk there is 3 screws under the carpet that hold down the round access panel. Remove this and you will see the top of the sender assembly. Remove the sender assembly and then reach into the tank at the bottom of the tank and you will find the fuel pump assembly, lift this straight up to release it from the mounting pins and remove it from teh gas tank.
Change the check valve on the pump assembly and then reassemble.
Posted on Jun 04, 2009
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Posted on Jan 02, 2017
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