4.6L won't fire after rebuild - FordTough.ca - Home of Canadian Ford Truck Enthusiasts
 
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post #1 of 9 (permalink) Old 08-10-2014, 07:10 PM Thread Starter
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Question 4.6L won't fire after rebuild

Truck = 1998 F150 with 4.6L Windsor SOHC

I just completely rebuilt the engine including pistons, rings, timing chains (timing is good; compression @ 180 psi), 2 new coils, wires, plugs etc. and there's no fire at the plugs when I crank it. It turns over good but doesn't start. The fuel pump comes on and there's fuel up to the injectors. Before I disassembled the engine, it still ran good except for one piston. The 2 new coils, wires, plugs were replace before I rebuilt it. I was very thorough when re-installing the electrical etc... and triple checked it all after the engine not firing. Fuses are good. I know it's hard to trouble shoot without seeing the truck but I'm just looking for ideas? The battery has been disconnected for months as I started a long time ago. Computer maybe?


Thanks
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post #2 of 9 (permalink) Old 08-11-2014, 07:03 AM
 
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Crank and/or cam position sensor?

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post #3 of 9 (permalink) Old 08-11-2014, 11:34 AM
 
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Did you time the engine correctly ?

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post #4 of 9 (permalink) Old 08-11-2014, 11:01 PM Thread Starter
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Fixed!!! It was the crank sensor that was unplugged; the only one I forgot to plug in.
Runs absolutely beautiful.
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post #5 of 9 (permalink) Old 08-12-2014, 12:36 AM
 
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Quote:
Originally Posted by Destructicon View Post
Crank and/or cam position sensor?
Damn, he did it again!

Such is life. Just passing through.

04 F150 FX4 Screw 5.4 with couple of mods
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post #6 of 9 (permalink) Old 08-12-2014, 04:42 AM
 
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Nice, another win for the fordtough.ca talent. lol

801A - 6550 lb bundle of joy
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post #7 of 9 (permalink) Old 08-12-2014, 06:59 AM
 
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Oops! Sorry.

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post #8 of 9 (permalink) Old 08-30-2014, 07:33 PM
 
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At least it was just the CKP sensor connector. There's nothing worse than looking on the bench after the front cover is on and seeing the tone ring staring back at you. lol

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post #9 of 9 (permalink) Old 09-16-2014, 09:00 AM
 
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I see that you managed to solve it . Next time your stumped, check with a member on here by the name of "JimmyK"
He's one of the top Ford Truck Tech's in the Country (when Ford dealers mechanic's got stuck, and they would phone the Ford hot line, he was one of the ones who would be there to answer the phone...)

Jim now works at the Oakville Ford Plant with the engineers there.

Press on regardless!
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