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Old 11-18-2010, 04:52 PM   #1
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the engine tries to start but wont. after cranking for several minutes the engine starts and runs fine. the crank sensor was replaced about 3 months ago.when trying to start you can hear misfire at air cleaner.i replaced the fuel regulator but that did not work .does anyone have an idear what can be wrong.
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Old 11-18-2010, 04:55 PM   #2
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Check your fuel pressure. Also, leave fuel pressure gauge on with key off, does the pressure hold or does it drop off?
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Old 11-18-2010, 05:07 PM   #3
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i did not check fuel pressure. i did turn key on and off several times and had fuel pressure at the valve on the rack.
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Old 11-18-2010, 05:17 PM   #4
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20 psi is not the same at 48psi. One the car will run, the other, not so much. Because you said the car was trying to start, this tells me fuel.
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Old 11-18-2010, 05:22 PM   #5
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what should the fuel pressure be at idle.if the pressure is good what do you think i should check next.thanks for your help dan.
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Old 11-18-2010, 05:32 PM   #6
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Should be around 45 or so. Shut the engine off and watch the pressure for about 10 mins. does it drop off?
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Old 11-18-2010, 05:44 PM   #7
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thanks i have to check that and get back to you.
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Old 11-18-2010, 06:55 PM   #8
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the fuel pressure was at 38 . i shut the motor off and checked the pressure about 15 minutes later and the pressure held at 38.
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Old 11-18-2010, 06:57 PM   #9
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Unhook the FPR, what does the pressure do? This is with the engine running.
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Old 11-18-2010, 06:57 PM   #10
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Also, try cleaning the MAF
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