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Plugs keep fouling out. Think I found out the solution

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Old 01-18-2008, 11:25 AM   #21
Dex
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Default RE: Plugs keep fouling out. Need some help

couldnt find anything better at the time. jebus
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Old 01-18-2008, 11:50 AM   #22
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Default RE: Plugs keep fouling out. Need some help

something may not be grounded right,maybe...
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Old 01-18-2008, 01:03 PM   #23
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Default RE: Plugs keep fouling out. Need some help

This is how you take a pic of a spark plug. I couldn't tell anything by your picture. According to my dyno run my car is running rich at 10.8 to 1. If your car won't idle then you must have a vacuum leak or some other problem. Maybe it's as simple as your idle rpms are set to low.

Click the image to open in full size.
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Old 01-18-2008, 01:31 PM   #24
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Default RE: Plugs keep fouling out. Need some help

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ORIGINAL: Dex

I change my plugs and the car starts a few times but runs lean. I come back a few days later and now the car wont start again and the plugs look the same as the last ones. Im wondering if they can go bad that quickly from being too lean? This is the best picture I could get. It almost looks like oil on it too...but there are new pistons and rings so how could that happen?


[IMG]local://upfiles/64043/83F27A8A7288448790ED4EFA54B43580.jpg[/IMG]
New pistons and rings? Who did the build? How many miles since the new parts? Was that first 20 - 30 minutes of running the engine done properly? How do you KNOW you are running lean? You sure your head gaskets sealed? Are all the plugs the same when this happens? Have you checked compression on all cylinders to be sure they are all close to the same?
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Old 01-18-2008, 01:37 PM   #25
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Default RE: Plugs keep fouling out. Need some help

...
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Old 01-18-2008, 01:48 PM   #26
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Default RE: Plugs keep fouling out. Need some help

compression was checked. no miles on the motor...maybe .00001 miles from starting it. AFR is reading 16 and when i would rev it the AFR would drop to 15's. All the plugs are the same. Dont know why the gaskets wouldnt be sealed...

Im going to check the ground strap tonight because thats all i can think of. Idle wont ruin spark plugs
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Old 01-18-2008, 01:54 PM   #27
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Default RE: Plugs keep fouling out. Need some help

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ORIGINAL: moosestang

This is how you take a pic of a spark plug. I couldn't tell anything by your picture. According to my dyno run my car is running rich at 10.8 to 1. If your car won't idle then you must have a vacuum leak or some other problem. Maybe it's as simple as your idle rpms are set to low.

Click the image to open in full size.










Almost make me get a woody just looking at it. You got anti seize on your threads. Shame on you.
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Old 01-18-2008, 02:02 PM   #28
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Default RE: Plugs keep fouling out. Need some help

So this is all happening during intitial startup after having the motor apart and replacing internal parts?

Has the engine run long enough for you to properly heat cycle it?

The oil on the plugs (a very small amount) wouldn't worry me a ton just yet - give the rings time to seat.

Get a good tune on that thing - the first several runs on that engine can have a huge impact on reliablity and power later on.
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Old 01-18-2008, 02:13 PM   #29
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Default RE: Plugs keep fouling out. Need some help

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ORIGINAL: LTMGlobal

So this is all happening during intitial startup after having the motor apart and replacing internal parts?

Has the engine run long enough for you to properly heat cycle it?
Yes

Nope

Hoping its a ground problem because then that will be easy haha the car is CURSED!
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Old 01-18-2008, 02:15 PM   #30
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Default RE: Plugs keep fouling out. Need some help

I dont what Mod's you have. But your air fuel mixture should be in the 12's to be running safe. At 15 or 16 your running so lean your going to melt your plugs. Your air fuel mixture shouldn't spike at high RPM's if it's tuned properly.
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Old 01-18-2008, 02:24 PM   #31
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Default RE: Plugs keep fouling out. Need some help

melt them at idle though? the car doesnt even stay running
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Old 01-18-2008, 02:25 PM   #32
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Default RE: Plugs keep fouling out. Need some help

Quote:
ORIGINAL: Dex

Quote:
ORIGINAL: LTMGlobal

So this is all happening during intitial startup after having the motor apart and replacing internal parts?

Has the engine run long enough for you to properly heat cycle it?
Yes

Nope

Hoping its a ground problem because then that will be easy haha the car is CURSED!
You're playing with fire IMO - get the problem figured out before running it - you want to be on the rich side when doing the initial startup. As bad as running lean is in general it is much worse to do so whengetting those new parts broken in.

Find a shop in your area to help you out if you need to!

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Old 01-18-2008, 02:35 PM   #33
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Default RE: Plugs keep fouling out. Need some help

there is one shop in utah. dont know much about them because everyone does work themselves. I'll take it by though...now how should i get it on a trailer?
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Old 01-18-2008, 02:48 PM   #34
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Default RE: Plugs keep fouling out. Need some help

Uhaul recomends that you use boards to help raise the front end when loading on their trailors.
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Old 01-18-2008, 02:54 PM   #35
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Default RE: Plugs keep fouling out. Need some help

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ORIGINAL: Mpaint99

I dont what Mod's you have. But your air fuel mixture should be in the 12's to be running safe. At 15 or 16 your running so lean your going to melt your plugs. Your air fuel mixture shouldn't spike at high RPM's if it's tuned properly.
He's refering to the air/fuel at idle.
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Old 01-18-2008, 03:02 PM   #36
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Default RE: Plugs keep fouling out. Need some help

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ORIGINAL: GidyupGo

Uhaul recomends that you use boards to help raise the front end when loading on their trailors.
the car doesnt run...
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Old 01-18-2008, 03:24 PM   #37
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Default RE: Plugs keep fouling out. Need some help

Buy or rent a come-a-along

or just have it towed
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Old 01-18-2008, 03:28 PM   #38
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Default RE: Plugs keep fouling out. Need some help

more bling bling
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Old 01-18-2008, 04:10 PM   #39
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Default RE: Plugs keep fouling out. Need some help

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Quote:
ORIGINAL: GidyupGo

Uhaul recomends that you use boards to help raise the front end when loading on their trailors.
the car doesnt run...





Flat bed and about $150.
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Old 01-18-2008, 05:15 PM   #40
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Default RE: Plugs keep fouling out. Need some help

hey dex what altitude is your tune set for?

really sounds like the tune isnt callin for enough fuel or your fuel system is messed up. shouldnt run too lean at idle. you sure you have the mafia set right? i would make em givve you a new tune then go from there.
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Old 01-18-2008, 05:15 PM
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05, 2007, 50, 89, faueling, ford, fouling, fuel, gt, mustaing, mustang, plugs, roush, spark, sparks

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