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04 Denali, Cranks a while before starting

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Old 08-10-2018, 08:32 PM   #1  
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Default 04 Denali, Cranks a while before starting

Last week my truck started cranking longer before starting but does eventually start and runs fine. If i turn it off and start it right back up then it fires right up. If it sits a while then seems like it loses pressure maybe and cranks longer. Could this be fuel pressure regulator? 04 denali, intake and w4m tune
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Old 08-10-2018, 08:42 PM   #2  
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Also, wife says theres a bad gas smell. No visible leaks though
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Old 08-10-2018, 08:52 PM   #3  
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Any check engine lights on
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Old 08-10-2018, 09:25 PM   #4  
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No lights
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Old 08-11-2018, 07:18 AM   #5  
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To answer your question, yes it could be a bad fuel pressure regulator.
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Old 08-11-2018, 08:25 AM   #6  
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Crank position sensor also has that effect
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Old 08-11-2018, 09:29 AM   #7  
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Would a CPS cause fuel smell and start back up right away if it doesnt sit too long?
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Old 08-11-2018, 10:13 AM   #8  
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Yes it could but im no expert its just my opinion i had it happen on a Cadillac i had
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Old 08-11-2018, 11:55 AM   #9  
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Where is the fuel smell coming from? Tailpipe, Underhood, in the cab?
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Old 08-11-2018, 11:56 AM   #10  
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Fuel line have a pin hole in it? Rusty state?
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