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#10 misfire?

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Old 06-16-2014, 07:11 PM
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#10 misfire?

So I pluged up my obd2 reader yesterday bc I eas board and bam I have a misfire on #10 wounder how long its bsen that way not sure :-\... bought a new Ignition coil swaped it out let it run a little while and no codes came up so drove around the neighborhood and pluged it in again and bam again misfire #10 any thoughts what it could be going to change the 10 sparks tomorrow hoping thats what it is.
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Old 06-16-2014, 07:26 PM
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Originally Posted by BigBlkEX View Post
So I pluged up my obd2 reader yesterday bc I eas board and bam I have a misfire on #10 wounder how long its bsen that way not sure :-\... bought a new Ignition coil swaped it out let it run a little while and no codes came up so drove around the neighborhood and pluged it in again and bam again misfire #10 any thoughts what it could be going to change the 10 sparks tomorrow hoping thats what it is.
Probably the wet boot.
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Old 06-16-2014, 08:02 PM
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Probably the wet boot.
Brent, I belive you wrote a good write up on what the solution was.
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Old 06-16-2014, 08:21 PM
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http://www.ford-trucks.com/forums/11...l#post12209418
The fix
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Old 06-16-2014, 10:11 PM
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I thought I had the same issue, but my #9 AND #10 were dead... Then I remembered I have the 5.4
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Old 06-17-2014, 12:10 AM
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Originally Posted by Toreador_Diesel View Post
Brent, I belive you wrote a good write up on what the solution was.
Thanks for the advice but its bone dry. No water leaks from the seal on the crowl where the hood shuts. We haven't had any rain for about 2 weeks also. I switch the old one back on and drove about 20 miles let it sit for awhile and drove for another 20 miles or so. And I have no codes come up when I check. Weird something's up.
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Old 06-17-2014, 08:27 AM
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I dropped a set of plugs in the Ex a couple of months ago and immediately wound up with a #10 misfire. The cylinder wasn't dead, just not "right".

It turned out that when I pulled the plug off of the #10 injector (to get my big old hands to #10 without breaking anything) the retaining clip on the plug broke. When I reconnected the plug, it appeared to be in place but it wasn't making a good enough connection to generate a consistent fuel flow and power.

The onboard electronics picked it up and signaled a #10 misfire.

It's an easy thing to check!
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Old 06-18-2014, 02:12 AM
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Quote:
Originally Posted by BassFantasizer View Post
I dropped a set of plugs in the Ex a couple of months ago and immediately wound up with a #10 misfire. The cylinder wasn't dead, just not "right".

It turned out that when I pulled the plug off of the #10 injector (to get my big old hands to #10 without breaking anything) the retaining clip on the plug broke. When I reconnected the plug, it appeared to be in place but it wasn't making a good enough connection to generate a consistent fuel flow and power.

The onboard electronics picked it up and signaled a #10 misfire.

It's an easy thing to check!
Funny I replaced all my sparks today and I restarted it and it wasnt running right again. Played with all the boots a little wiggle here and there and then I noticed the plug to the ignition coil was cracked making a poor connection. Replaced it good to go. Thanks all for your advice.
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Old 06-18-2014, 12:33 PM
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Quote:
Originally Posted by BigBlkEX View Post
Funny I replaced all my sparks today and I restarted it and it wasnt running right again. Played with all the boots a little wiggle here and there and then I noticed the plug to the ignition coil was cracked making a poor connection. Replaced it good to go. Thanks all for your advice.
Those boots need to be replaced at least every time you replace the plugs.
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