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Hard to start... only sometimes. Runs great

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  #1  
Old 03-11-2018 | 09:19 PM
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Default Hard to start... only sometimes. Runs great

So I recently did the following:
Plugs wires
Cps
Coils
02 sensors

Car runs great and has been a few weeks since completed the above items.
Last week it would start, had to Crank and Crank and Crank. Finally it fired and ran perfectly fine
I didn't think much of it. Well today same thing happened. Cranked like 40 times. Finally fired once I shifted into drive then back into park. Could be a coincidence.

Any suggestions on where to start troubleshooting?

Thanks!
 
  #2  
Old 03-11-2018 | 09:30 PM
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Sounds like low fuel pressure at the fuel rail upon start up. Could be a weak fuel pump or an injector leaking down when the engine is off.
 
  #3  
Old 03-11-2018 | 09:37 PM
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I will check fuel pressure tomorrow, is there a test port? How to diagnose your suggested issues?
 
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Old 03-12-2018 | 08:57 AM
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The test port is back by the coil packs.
 
  #5  
Old 03-12-2018 | 03:20 PM
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Rave manual doesn't specify much about this?
 
  #6  
Old 03-16-2018 | 09:09 AM
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You think it could be related to the new Crank sensor I put in?
 
  #7  
Old 03-16-2018 | 10:40 AM
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Last week it would start, had to Crank and Crank and Crank. Finally it fired and ran perfectly fine
I didn't think much of it. Well today same thing happened.
How long did it sit between starts? Since last week?
......
 
  #8  
Old 03-16-2018 | 10:41 AM
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Originally Posted by number9
How long did it sit between starts? Since last week?
......
About 10 days or so.
 
  #9  
Old 03-16-2018 | 11:49 AM
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Originally Posted by sickws6
About 10 days or so.
Would think that lends more credence to a weak pump or injector issues.
......
 
  #10  
Old 03-16-2018 | 11:56 AM
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Originally Posted by number9
Would think that lends more credence to a weak pump or injector issues.
......
If I had a fuel issues I would suspect poor running though wouldn't I?
 


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