Assuming there are no exhaust leaks, look for an injector leaking down and
filling a cylinder and the remote possibility of a valve lot sealing to
allow ignition to get into the exhaust or intake. Yes backfires can occur in
the intake track. That can also occur if there is a problem with the
distributor cap or wires where spark cross fires to more than one plug. A
carbon track-track in the cap is good for this one.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Dennis Jowell
Sent: Saturday, May 16, 2015 6:19 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Start up,back fire?

Question on why do I sometimes get a backfire from my 2.2 GOWESTY WBX.
yesterday I drove the 88 gl Westy an 1.5 hr pulled over to check my GPS,
shut the engine off. Then 2 minutes later started it and "bang" it
backfired, it did start. Shut it down and tried again same thing. Drove home
it didn't occur again. Any thoughts of what is going on? The new  Engine has
about 5000 miles on it. Maybe to many mice running around in there.

Dennis Jowell
Scotch Hollow Farm
Newbury, Vermont