fuel distributor diagnosis

Asked by May 08, 2012 at 04:43 AM about the Volkswagen Microbus

Question type: Maintenance & Repair

microbus difficult to start when cold.
drives fine when warm.
difficult to start again after standing for a while.
no problem with spark or timing.

2 Answers


if it has a fuel distributor it prolly has cis. hard cold starting is usually a symptom of the warm up regulator either clogged or out of ajustment it is not easy to ajust correctly without guages. hard hot start usually is caused by a leaking one way valve at the fuel pump. easy to fix and cheap to buy at the dealership

2 of 2 people found this helpful.

How can i test the warm up valve whether it needs fixing or not?

1 of 1 people found this helpful.

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