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Old 05-30-2015, 03:57 PM   #1
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Wet spark plug

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I just pulled this spark plug out all of the other cylinders were completely dry and this one is wet. what do you guys think this is?


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Old 05-30-2015, 04:06 PM   #2
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Looks like you might have a bad ring on that piston. Maybe do a compression test.


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Old 05-30-2015, 11:34 PM   #3
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Old 06-01-2015, 08:53 AM   #4
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Do a leak down test which should let you know if you got some compression escaping.
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Old 06-01-2015, 10:26 AM   #5
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Bad rings would be my first guess.
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Old 06-01-2015, 09:52 PM   #6
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I'm with everyone else... probably bad rings, one thing the 5.0 can be common for is bad rings. I rebuilt my engine last year due to heavy oil consumption from poor rings. I did a dry compression test, then a wet compression test, which raised the compression due to poor ring seats, and then did a leak down test, which all cylinders had between 20-80% leakage lost all through the crankcase.

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Old 06-03-2015, 09:25 PM   #7
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I'm with everyone else... probably bad rings, one thing the 5.0 can be common for is bad rings. I rebuilt my engine last year due to heavy oil consumption from poor rings. I did a dry compression test, then a wet compression test, which raised the compression due to poor ring seats, and then did a leak down test, which all cylinders had between 20-80% leakage lost all through the crankcase.

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Would it be bad if Instead of doing a rebuild I just swapped rings?


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Old 06-03-2015, 09:28 PM   #8
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If you have the engine torn down to replace rings, it wouldn't be much more for at least replacing at least the crank and rod bearings. You will also want to have the cylinder walls re-honed, or the new rings will never reseat properly

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Old 06-03-2015, 09:30 PM   #9
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If you have the engine torn down to replace rings, it wouldn't be much more for at least replacing at least the crank and rod bearings. You will also want to have the cylinder walls re-honed, or the new rings will never reseat properly

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That's what I'm planning on thank you


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Old 06-03-2015, 09:32 PM   #10
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No problem. Just FYI, my background, I am a master ASE certified technician... If you have any technical questions, feel free to message me

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Old 06-04-2015, 11:24 AM   #11
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Try to find a lower mileage explorer pullout. Swap your mustang cam in with new valvesprings and your front accessories and drop it right in and gain 50rwhp in the process.

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Old 06-05-2015, 09:07 PM   #12
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You guys are awesome thank you for the info!


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Old 06-06-2015, 09:29 AM   #13
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Try to find a lower mileage explorer pullout. Swap your mustang cam in with new valvesprings and your front accessories and drop it right in and gain 50rwhp in the process.

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Would the Pistons that came in the explorers handle a 125shot? They didn't come forged right?


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Old 06-06-2015, 05:05 PM   #14
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Nope but they'll handle as much as the forged ones. Forged ones are just more resistant to detonation... Which you should not have if you have a good tune.

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