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Replaced Head Now no SPARK

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Old 03-23-2012, 07:33 AM
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Year: 1996
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Engine: 4.0 HO
Exclamation Replaced Head Now no SPARK

Ok... here I go. I replaced a head with a rebuilt from Odessa Cylinder Heads AKA: Clearwater. I went step by step using correct torque on every bold, nut, and screw. I have all my vacuum lines hooked up and as far as I can see all my electrical is good and in place where it should be.

The first time I go to crank the motor after completing the job I notice I didn't have any fuel going to the fuel rail. After some looking around I noticed I pinched the plastic flex line right at the firewall. Fixed that I got fuel.

The next time. I noticed I'm not getting spark. I have a spark tester with a good ground and not getting any spark at any plug... I check the coil and no spark there.


I'm lost and don't have a clue what went wrong. I cranks good got fuel but no spark.

Old 03-23-2012, 07:37 AM
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Hows the crank position sensor?
Old 03-23-2012, 07:43 AM
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Its brand new. I was chasing a misfire.

Also the dis cap, rotor, plugs, wires, temp sensor, thermostat, fuel filter, air filter all have less that 1k on them.
Old 03-23-2012, 08:43 AM
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Check to see if you pinched any wires at the back of the head,other than that you'll have to re-trace all your steps.
Old 03-23-2012, 05:01 PM
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That was it... Thanks. I found that I had loosen a nut on a ground stud at the dip stick that I didn't need too. It has the ground wire for the ignition coil on that stud.


Runs like a champ!


A+++ for Odessa Cylinder Head AKA Clearwater Cylinder Head
Old 03-23-2012, 07:31 PM
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[QUOTE=CJ_tiz;1642077]That was it... Thanks. I found that I had loosen a nut on a ground stud at the dip stick that I didn't need too. It has the ground wire for the ignition coil on that stud.

That will do it!! Glad to hear it runs again.
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