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10-25-2017, 09:52 AM | #1 | |
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Join Date: Dec 2005
Location: maple Grove, Minnesota
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2008 Grand Caravan SXT - Help with fuel pressure test results?
I have 2008 Grand Caravan SXT with 3.8 liter engine. Starting this summer an intermittent long crank time presented itself and now a misfire is being reported on cylinder 1. Long crank time mostly happens in the morning and misfire goes away after driving a few seconds and run fine. If the temp is 20 degrees or lower the misfire does happen as often.
I have check the fuel pump relay and that tested good. I have finally did a fuel pressure test. I connected the pressure gauge before the fuel rail. Initial pressure 55 and 59 (ran pressure test twice) Leak down: in 5 minutes pressure drop to 30 and 32 in 15 minutes pressure drop to 10 and 12 pressure was still dropping after 15 minutes, I just stopped the test. Does the pressure test indicate a bad return valve on pump or something else? Thank you for your help. Last edited by scherp; 11-11-2017 at 10:24 AM. Reason: Fuel pressure test was done |
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