First fire / NO FIRE

[Nervouswreck]

After reinstalling my fresh worked motor , it cranks , I have perfect oil pressure, fuel pressure etc but not even a hint of trying to turn over . I went over every single harness , vac line ( EGR DELETE ) etc etc . Any thoughts guys ?


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[DSG2003Mach1]

crank pos sensor, cam pos sensor, coil harness?

youve got some conflicting info in your post though - it turns over but wont catch, correct?

 

[03cobra#694]

Basically no spark? All the grounds hooked up?

 

[Nervouswreck]

crank pos sensor, cam pos sensor, coil harness?

youve got some conflicting info in your post though - it turns over but wont catch, correct?

Yes turns over but no fire . Seems like no spark at all .


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[Nervouswreck]

Basically no spark? All the grounds hooked up?

Yes all grounds hooked up sir . And brand new Cam sensor and Crank sensor . Both hooked up


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[Nervouswreck]

crank pos sensor, cam pos sensor, coil harness?

youve got some conflicting info in your post though - it turns over but wont catch, correct?

Both Cam and Crank sensor hooked up and brand new. All grounds are fine


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[03cobra#694]

I'd double check all the plugs/harness again. Are all the trans plugs plugged back in?

 

[apex svt]

Can't you jam a plug tester in the cop and turn it over to see if it's getting anything? Then you will know for sure. No codes?

 

[Nervouswreck]

I'd double check all the plugs/harness again. Are all the trans plugs plugged back in?

Yes


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[03cobra#694]

Did you pull a plug and check for spark?

 

[cj428mach]

You didn't forget to put a reluctor gear on did you?

 

[03cobra#694]

You didn't forget to put a reluctor gear on did you?

Oops, lol. Curious if you could pull any codes at this point also.

 

[Nervouswreck]

Did you pull a plug and check for spark?

No sir not yet


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[Nervouswreck]

You didn't forget to put a reluctor gear on did you?

What is that ? Is that the gear inside the timing chain cover for crank sensor ?


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[SVTdreamin04]

Do you have the large plug that the engine wiring harness plugs into plugged in tight?


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[hotcobra03]

Who assembled engine?

Timing chains backwards?

Tdc you should have bump in cam sensor hole.

Fuel shut off switch will trigger sometimes all on its own

 

[cj428mach]

What is that ? Is that the gear inside the timing chain cover for crank sensor ?


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Yep. The first mod motor I ever worked on was swapping in a 5.4 crate motor in a buddies f150. I was swapping the timing cover over to the new motor and out of the corner of my eye I caught the reluctor gear still on the old motor. If I hadn't caught that there would have been a hell of a nightmare finding out why the motor wouldn't start.

 

[Nervouswreck]

I got it everyone thank you . Crank shaft sensor harness was the culprit


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