coolant in spark plug well - Club Touareg Forums
 
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post #1 of 8 Old 6 Days Ago Thread Starter
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coolant in spark plug well

Hey there!
I just bought a 2009 Treg V6 with 100,000 miles at auction... didn't have it but three days and it started sputtering and hesitating. Took it to my mechanic and he replaced the coils and plugs from his diagnostic readings (and likely cause from what I've read). He called me to say that the car runs great now, BUT after returning from the road test he noticed anti-freeze in the plug wells. Not in the cylinders but around the outside of the plugs. He's investigating the possible coolant leak - hoping it's not a head gasket. In the meantime I thought I'd check here to see if others have had this experience. Please and thank you!
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post #2 of 8 Old 6 Days Ago
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Well, the good news is that there's only one head on a VR6.
:- /

I know, that's probably not what you wanted to hear....

I'd wipe it up and watch it closely. Also, watch your coolant and oil. Look for signs of the two mixing.

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post #3 of 8 Old 6 Days Ago
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You do have the best engine to have this issue with at least...check out this guy's work (a pro) on a 3.6:

Treg Nightmare or dream?

Before the above thread I was always sure a head was an engine out job (still might be, but I found the teardown interesting)...panzer had to go way beyond this as his issues were sludge related, but might pm him. The thread above was started by him (if that isn't obvious already)...
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post #4 of 8 Old 5 Days Ago Thread Starter
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Thanks for the replies, guys.
UPDATE: Ok, so I misspoke regarding the discovery of the anti-freeze... the technician noticed old, dried and gummy coolant around the plug BEFORE he changed out the plugs and coils. They did not find any coolant appearing in any wells after the work. My bad... but so good!! We came to the likely conclusion that perhaps a bit of coolant spilled over the head during a thermostat change and was never cleaned up. My faith has been restored in my purchase of this vehicle, at least for now. Cheers!!
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post #5 of 8 Old 5 Days Ago
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Yea, not sure else how it would leak through the valve cover.

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post #6 of 8 Old 5 Days Ago
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I was having a hard time visualizing how coolant could have got there and thought it could get there from a cracked head...but thankfully it was dried and old and probably came from someone spilling coolant on the top of the motor during a refill or something that is non material.
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post #7 of 8 Old 5 Days Ago
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Whew!!! :- )

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post #8 of 8 Old 4 Days Ago
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That white crud around the coil is corrosion from water creeping into the spark plug gally, usually coils 5 and 6 are the worst.
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