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-   -   Uh, help? (https://mustangforums.com/forum/4-6l-v8-technical-discussions/599087-uh-help.html)

Swervin309 05-01-2010 02:09 PM

Uh, help?
 
Last week i pulled all 8 plugs, cleaned them, and gave the engine the Seafoam treatment. Now she has an inconsistent miss and will sometimes stumble at WOT between 1500-3000. Did i make a boo boo or could it be something simple?
When SF is added to the fuel and left in there for a certain period would it have a negative effect on the fuel? I'm not prepared nor willing to shell out $90 on new plugs.

howarmat 05-01-2010 02:14 PM

its most likely plugs man, make sure they are put back in correctly.

Swervin309 05-01-2010 02:15 PM


Originally Posted by howarmat (Post 6976973)
its most likely plugs man, make sure they are put back in correctly.

You're probably right. I'm waiting for her to cool off so i can check em out. FFFFFFFFFUUUUUUUUUUUUUUUUUU.....

Goldenpony 05-01-2010 04:17 PM

The 2 piece crap plugs from the factory are quite fragile. A lot of times, the torque to remove them will screw them up inside and cause just such a miss. You might be looking at a new set of plugs after all. Were they hard to get out?

Swervin309 05-01-2010 04:20 PM


Originally Posted by Goldenpony (Post 6977106)
You might be looking at a new set of plugs after all. Were they hard to get out?

Yeah, i had to put a little @$$ behind em. I started playing around and i determined that it was the #2. I unhooked the injector harness on each one until i got a consistent miss. Is it safe to swap just one plug or is it better go ahead and do em all?

07 GT E UPP 05-02-2010 06:36 PM


Originally Posted by Swervin309 (Post 6977109)
Yeah, i had to put a little @$$ behind em. I started playing around and i determined that it was the #2. I unhooked the injector harness on each one until i got a consistent miss. Is it safe to swap just one plug or is it better go ahead and do em all?

At this point, If I was you.... I would replace them all, and with proper gap..!!

Swervin309 05-03-2010 06:13 PM


Originally Posted by 07 GT E UPP (Post 6978737)
At this point, If I was you.... I would replace them all, and with proper gap..!!

Yeah, i did. I was sure to put anti-seize compound on them. Runs like a dream. Unfortunately, the gap on the plugs in non-adjustable.

hammeron 05-03-2010 06:36 PM


Originally Posted by Swervin309 (Post 6980982)
Runs like a dream.


glad to hear it all worked out

Simon1 05-08-2010 11:37 AM


Originally Posted by Swervin309 (Post 6980982)
Yeah, i did. I was sure to put anti-seize compound on them. Runs like a dream. Unfortunately, the gap on the plugs in non-adjustable.

Where did you hear that? I adjust mine down to .034.

moosestang 05-09-2010 09:00 AM


Originally Posted by Simon1 (Post 6990618)
Where did you hear that? I adjust mine down to .034.

I adjusted mine using a big C clamp and a socket.


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