04 Denali, Cranks a while before starting - PerformanceTrucks.net Forums

GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

04 Denali, Cranks a while before starting

Old 08-10-2018, 08:32 PM
  #1  
On The Tree
Thread Starter
 
Join Date: Apr 2011
Location: maryland
Posts: 168
Thanks: 0
Thanked 0 Times in 0 Posts
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
mhorn0817 is offline  
Old 08-10-2018, 08:42 PM
  #2  
On The Tree
Thread Starter
 
Join Date: Apr 2011
Location: maryland
Posts: 168
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Also, wife says theres a bad gas smell. No visible leaks though
mhorn0817 is offline  
Old 08-10-2018, 08:52 PM
  #3  
11 Second Club
iTrader: (13)
 
MrHorsepowerLSx's Avatar
 
Join Date: Mar 2011
Location: NJ
Posts: 850
Thanks: 0
Thanked 26 Times in 26 Posts
Default

Any check engine lights on
MrHorsepowerLSx is offline  
Old 08-10-2018, 09:25 PM
  #4  
On The Tree
Thread Starter
 
Join Date: Apr 2011
Location: maryland
Posts: 168
Thanks: 0
Thanked 0 Times in 0 Posts
Default

No lights
mhorn0817 is offline  
Old 08-11-2018, 07:18 AM
  #5  
TECH Junkie
iTrader: (5)
 
MikeGyver's Avatar
 
Join Date: Jun 2005
Location: Northern Illlinois
Posts: 3,681
Thanked 41 Times in 32 Posts
Default

To answer your question, yes it could be a bad fuel pressure regulator.
MikeGyver is offline  
Old 08-11-2018, 08:25 AM
  #6  
Teching In
 
Jutsumguy's Avatar
 
Join Date: Sep 2017
Posts: 24
Thanks: 0
Thanked 0 Times in 0 Posts
Default ?

Crank position sensor also has that effect
Jutsumguy is offline  
Old 08-11-2018, 09:29 AM
  #7  
On The Tree
Thread Starter
 
Join Date: Apr 2011
Location: maryland
Posts: 168
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Would a CPS cause fuel smell and start back up right away if it doesnt sit too long?
mhorn0817 is offline  
Old 08-11-2018, 10:13 AM
  #8  
Teching In
 
Jutsumguy's Avatar
 
Join Date: Sep 2017
Posts: 24
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1

Yes it could but im no expert its just my opinion i had it happen on a Cadillac i had
Jutsumguy is offline  
Old 08-11-2018, 11:55 AM
  #9  
11 Second Club
iTrader: (13)
 
MrHorsepowerLSx's Avatar
 
Join Date: Mar 2011
Location: NJ
Posts: 850
Thanks: 0
Thanked 26 Times in 26 Posts
Default

Where is the fuel smell coming from? Tailpipe, Underhood, in the cab?
MrHorsepowerLSx is offline  
Old 08-11-2018, 11:56 AM
  #10  
13 Second Truck Club
iTrader: (7)
 
trxmxzx's Avatar
 
Join Date: Nov 2006
Location: Hartland, MI
Posts: 795
Thanks: 0
Thanked 6 Times in 6 Posts
Default

Fuel line have a pin hole in it? Rusty state?
trxmxzx is offline  

Thread Tools
Search this Thread
Quick Reply: 04 Denali, Cranks a while before starting


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: