wont start on the first time

Asked by May 15, 2016 at 06:54 PM about the 1997 GMC Savana G3500 Passenger Van Extended

Question type: General

1 Answer

87,045

Run a fuel system pressure test, see how long it holds pressure after it is shut down, it could be drain back through the fuel pump or the regulator is dumping all the pressure once the vacuum ceases to exist. May also be a erroneous sensor reading but you will need a live data scanner to find it.

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