The O2 sensor is not getting on line fast enough. On a warm restart the ECU
will look for that sensor in about a minute. The sensor may be shot or the
heater in it is not working. No sensor signal the ECU will keep enrichening
the mixture until it sees it. To confirm either floor the throttle (full
throttle switch O2 sensor ignored) or cycle the ignition switch. If it
clears for a short while the O2 sensor or circuit is the problem.

As for testing the O2 sensor heater this is best done with a current meter.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Dennis Jowell
Sent: Tuesday, September 29, 2015 4:34 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Running issue

I drive my 2.1 Westy for a 45 minutes or whatever so the engine is up to
temperature. I'll pul over to get some fuel and upon starting the Westy
again the engine will start great but then goes into a maybe "a super rich
mode" like it wants to foul the plugs. I will then give the accelerator half
throttle until it runs smoothly again. It takes about a minute for it to run
clean out and run great. Down the interstate it runs great.
Trying to this figure this out and what do I do. I have replaced fuel
injectors etc. but have put on about 4000 miles on it in Newfoundland and
Quebec hoping that it would work it self out. We leave on our next trip in a
few weeks. I don't know if I am causing damaged to my 2.2 GOWESTY engine or
whats going on.
Any suggestions on what I should be looking for?

1988 Westy GL

Dennis

Dennis Jowell
Scotch Hollow Farm
Newbury, Vermont