[T3] Blue Coil
Bobsnotch at aol.com
Bobsnotch at aol.com
Sat Jan 29 17:05:33 PST 2011
In a message dated 1/29/2011 5:17:19 P.M. Eastern Standard Time,
jimmyandcher at yahoo.com writes:
Results of latest test drive: Once again, I let the car idle in the
driveway about 15 minutes, then drove about 1 mile before problems
began; but this time the results were totally different than the last
test drive. THIS time, instead of 2 cylinders suddenly shutting down
and then returning 10 seconds later, I began to feel a gradual miss
which slowly developed into violent bucking under throttle; but idle
remained fine, whereas it wouldn't idle at all last time..... EXACTLY
as if the car is not getting fuel. Fuel filters are brand new and
clear; Fuel pump (electric) is nearly new and hasn't shown any signs
of failure.... but from my experience with fuel pumps, it is still
suspect.
I am back at square one. Diagnosis between the pre-coil and post-
coil drives are 100% different. Unfortunately at this point, I may
have to dump the car off at a shop and let them isolate it. It's a
daily driver, and my wife and I are short one vehicle while I
frantically replace parts and follow various rabbit trails.
I know you replaced the "external" fuel filters, but what's the condition
of the in tank sock? This definitely sounds like a fuel starvation problem.
If the overflow hose (under the RF fender) has any cracks in the rubber, it
will allow water to enter the tank. This water will lay there and collect
dirt and other sludge and plug the sock. A way to test this is to remove
the fuel line from the tank (wear eye protection, and have a container ready
to catch fuel that will drain out), and see what kind of flow you're
getting out of the tank. A nice strong stream is what you're looking for. If you
don't get that, the sock is plugged, and will need cleaning or replacing.
If you get a good solid stream of fuel out of it, then your pump is dieing
(like you suspect). I hope this helps.
Bob 65 Notch S with sunroof and IRS (Krusty)
71 Notch (Krunchy)
64 T-34 Ghia (Wolfie)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.vwtype3.org/private.cgi/type3-vwtype3.org/attachments/20110129/1a2378cc/attachment.htm>
More information about the type3-vwtype3.org
mailing list