89 Audi 200 Turbo fuel problem

[Eric_R_Kissell at email.whirlpool.com]

Fay,
I am not sure what car you have, but I assume it is a 5-cylinder turbo.

The Bentley manual is a good reference, but it is sometimes hard to figure
out how to fix your car using only them. Scott Mockry's (SJM) site has very
good information:

http://www.sjmautotechnik.com/

Look at the section called:

Troubleshooting Tips, and
Repair Information
1986-88 5000TQ
1989-91 Audi 100/200
1992-95 Audi S4/S6

Some of your problems sound like you have a leak in a hose that is part of your
intake system or possibly a leaking vacuum hose. I would remove and closely
inspect all of these hoses. You cannot always see the cracks without removing
the hose. Two popular leaks are the intercooler to throttle body hose (AKA
"Michelin Man hose") and the lower wastegate hose. Any of the hoses could be
cracked. For example, I just replaced the main air boot on top of the air flow
sensor this weekend on my 1989 200q Avant because it had cracks on the
underside. Even the intercooler can leak at the end caps, so do not overlook
that.

Oh, the white smoke sounds bad. I usually associate white smoke with a leaking
head gasket. You should do a compression test.

Black smoke also sounds bad. If you have been producing black smoke for a while
you could have damaged your catalytic converter. This would make your car run
crappy. I doubt if a failed cat is your main problem, but it may be involved
now.

There are many possibilities. The compression test is important. Then I would
systematically eliminate the intake and vacuum hoses as suspects. Remember,
these hoses are likely old, so replacing them is not wasted money even if they
are not the culprit right now. It is not a question of if they will fail, it is
a question of when. Fuel pumps are known to fail and the coating can come off of
the tank and block the inlet to the fuel pump. Testing for fuel pressures per
the information at SJM's site can help narrow down the list of potential
culprits. A good shop should know how to track things down.

I believe you are in CT. Dealership parts are usually overpriced. You may
already have a trusted parts supplier, but I recommend you buy parts from one of
the following sources if you do not:

Adirondack Auto Brokers
PO BOX 326
Galway, NY 12074
Talk to Mark or Dave.
phone: 518-882-6534
fax: 518-882-1914
email: mark at germanautoparts.com
http://www.germanautoparts.com

VW Parts Inc.
Talk to Eric Price
Phone: 800-VW-PARTS
Alt: 845.254.6600
email: vwparts at banet.net

Clair Parts Express
Talk to Mack
800-354-5100

BLAUfergnügen! Inc.
4921 CTH CR
Manitowoc, WI 54220
Phone: 920-758-3232
Fax: 920-758-3234
Quote email:  blauferg at audiquattroparst.com
? Quote Email:  partsoperations at audiquattroparts.com
? Tech Email: technicalgroup at audiquattroparts.com
http://www.audiquattroparts.com

The Parts Connection
106 Pollasky Ave., Suite D
Clovis, CA 93612
Talk to  Rod
phone: 559-297-0198
toll free: 800-472-1144
fax: 559-297-5326
sales at thepartsconnection.com
http://www.thepartsconnection.com/

HTH,
Eric Kissell
1989 200q Aavnt, 1.8 bar (QLCC), Fuchs
1986 5000cstq, 1.8 bar (SJM)
1987 VW GTI 16v, 1984cc