Thread: Coolant leak

Originally Posted by dswatts

I seem to have a coolant leak/weep from the water jacket plug in the cylinder head. Has anyone else had a leak here, is it common?
Dylan

Yes, very common. You will need to remove the exhaust manifold to rectify it, while you do this make sure you check the manifold for warpage, and replace all the studs and nuts NOW before they break. just remove the plug, clean all the factory sealant off the thread thoroughly and reseal with a good quality sealant like Wurth250 or similar.

JC

Dylan,
I had this happen to mine as well, As JC has said, while the manifold is off, do some preventative maintenance & fix/rectify what is needed.
I had some problems trying to find a tap the same size, found one eventually as the bung in mine left some thread in the head. I re-tapped & vacuumed the head to rid all the swarf away. New sealant, new plug & away i went. Never leaked again.
Good luck.

Thanks Guys, sounds like an easy fix, and a good time to de web the exhaust manifold.
thanks again, much appreciated

And drill/tap for a future EGT gauge!!!!!
Even if you put a bung in it.
There is info on the Thermogaurd site for the thread size.
WISH I DID!!!!
Andrew

Good point
Thanks Andy

Originally Posted by justinc

Yes, very common. You will need to remove the exhaust manifold to rectify it, while you do this make sure you check the manifold for warpage, and replace all the studs and nuts NOW before they break. just remove the plug, clean all the factory sealant off the thread thoroughly and reseal with a good quality sealant like Wurth250 or similar.

JC

I know this is an old thread, but wasn't able to find the size of the hex key needed to take this plug out on this site, and was pretty big. I'm just writing here to confirm that it needs a 12mm hex head, not a 1/2 inch or 13mm.

12mm are easier to get, so should save the NEXT person from buying a larger/more expensive kit to make sure they have the right one

Originally Posted by sniegy

Dylan,
I had this happen to mine as well, As JC has said, while the manifold is off, do some preventative maintenance & fix/rectify what is needed.
I had some problems trying to find a tap the same size, found one eventually as the bung in mine left some thread in the head. I re-tapped & vacuumed the head to rid all the swarf away. New sealant, new plug & away i went. Never leaked again.
Good luck.

I think I have the same problem. Any tutorial on this? Thanks

Actually mine is losing coolant and I found traces of coolant on the exhaust manifold and under. Could it be leaking exhaust manifold? Thanks.