Engine not starting - JeepForum.com

 
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post #1 of 4 Old 07-03-2012, 01:46 AM Thread Starter
Kimiko
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2003 KJ Liberty 
 
Join Date: Apr 2012
Location: Brandon
Posts: 4
Engine not starting

I have a Jeep Liberty 2003 with a 3.7 engine.

Here's what I've done so far.

I've recently repaired an engine that came with this used car I bought. Beforehand it was starting up but after the repair the car wouldn't fire. I repaired a bent valve and replaced the head.

I'd just like some idea of what could be wrong, any help or suggestions would be appreciated, thanks.

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post #2 of 4 Old 07-03-2012, 07:57 AM
streetglideok
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2005 KJ Liberty 
 
Join Date: Jul 2011
Location: Castle Pines
Posts: 3,244
Need more information. You need fuel, air and spark for the engine to run. You've got air, but do you have compression? Do you have fuel pressure? Do the injectors work? Lastly, do you have spark? Get us some solid answers to those questions, then we can tell you where to go. Other then that, its going to be shotgun guessing.
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post #3 of 4 Old 07-03-2012, 10:01 AM Thread Starter
Kimiko
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2003 KJ Liberty 
 
Join Date: Apr 2012
Location: Brandon
Posts: 4
I do have compression, fuel pressure, but the injectors aren't working but they were running before.
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post #4 of 4 Old 07-03-2012, 09:43 PM
streetglideok
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2005 KJ Liberty 
 
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Location: Castle Pines
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Which head did you replace, driverside, or passenger side? Passenger side has the cam sensor in it. If I remember right, earlier model 3.7L engines had a different config then the newer ones on the cam and crank toner rings for the sensors. Wrong one will cause issues, as the PCM cant identify cylinder 1
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