98 silverado 5.7 cranks but no start? - Chevrolet Forum - Chevy Enthusiasts Forums

98 silverado 5.7 cranks but no start?


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  #1  
Old  November 26th, 2010, 4:16 AM
98 silverado 5.7 cranks but no start?

So the truck was doing a thing where it would start perfect when cold and then i would go to the store and come out and try and start it and it would crank and crank and barely start.
So now it just wont start at all. I checked for spark, removed the fuel filter and cranked to see for fuel pressure and both were good, i changed the crankshaft position sensor cause i heard those go bad and still no start.
If any one has any ideas i would apprexiate it thank you

  #2  
Old  November 26th, 2010, 6:02 PM
Have you checked the altenator or your battery?

  #3  
Old  November 26th, 2010, 6:33 PM
98ChevyGuy 
Have you checked the altenator or your battery?
Yes i did...

  #4  
Old  November 27th, 2010, 12:47 AM
  • CF Beginner
    Join Date: Nov 2010
    Posts: 10
I might be late, but:

I don't know if it's the same problem, but my Blazer did the same thing. I knew it wasn't the battery, because the lights worked perfectly, and the crank was very strong and continued. Turned out to be a broken Fuel Pump, which is what I thought from the beginning. It might also be your Timing Belt gone bad.

  #5  
Old  November 27th, 2010, 2:19 AM
mossheg 
I might be late, but:

I don't know if it's the same problem, but my Blazer did the same thing. I knew it wasn't the battery, because the lights worked perfectly, and the crank was very strong and continued. Turned out to be a broken Fuel Pump, which is what I thought from the beginning. It might also be your Timing Belt gone bad.
Im gonna buy a fuel pressure gauge and see what the actual psi im getting.
50 calls it good correct?

  #6  
Old  November 27th, 2010, 2:55 PM
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Pinkypinks 
Im gonna buy a fuel pressure gauge and see what the actual psi im getting.
50 calls it good correct?
I think that sounds about right.

  #7  
Old  November 27th, 2010, 10:28 PM
  • CF Senior Member
    Join Date: Nov 2010
    Posts: 368
Put some gas in a squirt bottle and give her a gargle and see if it fires. If it does this will tell you its a fuel problem. If it doesnt better look to ign.
I dont think a chev 5.7 has a timming belt.

  #8  
Old  November 28th, 2010, 2:04 AM
  • CF Active Member
    Join Date: Sep 2010
    Posts: 264
    Baton Rouge LA
not a belt but it has a chain, could have a possible broken sprocket


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