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Unread 09-28-2012, 07:26 PM   #16
Jimh64
Registered User
1995 ZJ 
 
Join Date: Aug 2012
Posts: 46
Quote:
Originally Posted by pshivers View Post
Check for fuel in the cylinder. If you don't have fuel, it's probably the cps or the ASD relay. If you have fuel, it might be the ignition coil. Ohming out the cps would be the next thing I would do though. The connector is easy to get to, but getting to the sensor and changing it is the hard part.
Dumb question, but how can I check for fuel in the cylinder?

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Unread 09-28-2012, 08:37 PM   #17
pshivers
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2008 KK Liberty 
 
Join Date: Sep 2012
Location: Westerville, OH
Posts: 113
With the spark plug out and the engine cranking over, you should be able to smell gas with the air exiting the hole where the spark plug came out of.
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Unread 10-05-2012, 03:48 PM   #18
Jimh64
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1995 ZJ 
 
Join Date: Aug 2012
Posts: 46
ok, so I checked for spark, and no spark. I checked for fuel by pushing in the needle on the pressure relief valve on the fuel rail and I have no fuel at all coming out.

Given those checks and the comments here, I assume it is my CPS. I looked underneath and I did see it way up there. Please tell me there is only one bolt holding it on. I think i can get to the bottom bolt from underneath. I can just barel get my arm up there.

If anyone has any suggestions on getting it out, I would appreciate it!

Thanks!
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Unread 10-06-2012, 04:49 PM   #19
Jimh64
Registered User
1995 ZJ 
 
Join Date: Aug 2012
Posts: 46
Quote:
Originally Posted by pshivers View Post
Check for fuel in the cylinder. If you don't have fuel, it's probably the cps or the ASD relay. If you have fuel, it might be the ignition coil. Ohming out the cps would be the next thing I would do though. The connector is easy to get to, but getting to the sensor and changing it is the hard part.
I have a tester, but I am not sure how to "ohm" out the cps. I know you use the 1st and 3rd pin holes, but what do I set my tester at and what shoud the reading be if it is dead?
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