

| Subject: | Diaganosing Fuel Injection Systems |
| Date: | Mon, 24 Feb 97 09:41:08 -0800 |
Item Subject: Text_1
Hi All,
The engine in my '85 Vanagon Westy died while I was driving it this
weekend. It shows a complete lack of desire to start. A quick check
on the coil wire shows it's getting good spark and the distributor is
turning. I can smell gas around the engine compartment when I try to
start it (could the injectors be stuck open?) and I can here the
ticking of the fuel pump when I first turn on the ignition.
I suspect it is not getting the proper fuel/air but I don't know how
to check this since I am a newbie with fuel injection (I know the
basic priciples but have never worked dirctly on such a system). I
have tried searching some of the faqs but I have been having problems
in both finding any info on basic diagnosing tips and with connecting
to the server.
Here are some basic questions I am trying to find out:
1) What systems control the fuel mixture (airflow meter?, does the ECU
control only the spark and timing or is it also tied into the
injection system)?
2) How do you determine if the injectors are working properly (I did
not want to explore this on the side of the road with a hot engine!)
3) What methods, tools, and tricks are known to help when diagnosing
VW FI systems.
Any help finding faqs info on these subjects or direct responses to
the problem would be appreciated.
TIA,
Vince
'85 Westy, GL (Dead to the world)
'90 Mit. Eclipse (My reliable car--knock on wood. . uh, err, vinyl
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