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emsvitil 12-21-2012 06:08 PM

Coolant in #2 spark plug hole of Zetec.
Coolant in #2 spark plug hole of Zetec.

And yes, it's coolant. I dried it out yesterday (small puddle around spark plug hex at time) and today it's moist again.

The spark plug hole on forward (exhaust cam) side looks moist as if coolant is seeping thru there......

But I'm hoping that the hex head bolt just to the left of #2 (towards #1) isn't a bolt but a plug for the coolant system. (looks slightly corroded, but was dry today and yesterday). If it's a plug, I think it's the leak.

Can someone tell me if this is a PLUG (please be yes) or a head bolt?



1turbofocus 12-21-2012 06:28 PM

You are correct , more then likely its the plug , I have tried to remove many of these and they are VERY tight some I couldnt even get out


emsvitil 12-21-2012 06:45 PM

If you can't get the plug out, would this work to seal it:

1) Mild acid to clean any corrosion around and on the plug.

2) Penetrating loctite to seal it up (hopefully)

whynotthinkwhynot 12-22-2012 10:52 AM

Try this article's advice, and be careful not to strip it. IIRC, it's an aluminum plug. If it's not, heat might help, but you'd have to be careful not to heat the plug itself- just the aluminum around it. I'm not sure if I'd want to go that far, so that's a last resort IMO. Try the mix mentioned above, and let it soak in. You might want to try some minor acid action as mentioned. When you re-install the plug, I'd use loctite- blue or green- to prevent a future galvanic reaction.

Best lube for Rusty Nuts

emsvitil 12-28-2012 11:33 PM

The cheap fix worked a little........

I skipped mild acid and went to muratic with an eyedropper.

Had baking soda solution in spark plug holes for acid overflow.

The plugs are steel, so they eventually got clean.

Soaking them in acid, then hitting them with the baking soda solution seemed to speed things up.

Wet / Dry vac to suck the water out of the spark plug holes then heat gun to dry them.

Followed by the green loctite to seal.

Anyway, there's still a leak; but it seems less than before and it does seem to be slowing down. If it eventually stops, I'll call it good.

BUT, if it doesn't stop, what's the best method of getting the plugs out.

I have an impact torx bit that will fit the plug, but my worry is stripping out the plug if I use my impact wrench.


I won't strip out the bit if I use an impact screwdriver (the type that you hit with a hammer) because hitting it with a hammer keeps the torx bit in the plug while you're loosening things up. My worry is head damage while hitting it with a hammer.......

Does anyone think I can damage the head with an impact screwdriver when I hit it with a hammer?


emsvitil 01-01-2013 02:33 AM

Good News:

The antifreeze isn't leaking from the pipe plug.


Bad News:

The antifreeze is leaking due to aluminum porosity


tideiscup 01-01-2013 07:03 AM

good idea, Mild acid to clean any corrosion around and on the plug.and Penetrating loctite to seal it up.thanks

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