Hello all ,
i just remove my CMI sport tube from my 525 efi , and in exaust port number 3 and 7 i found some water drop (it`s not water because when i winterizing my block last fall i put 4 gallons of RV antifreeze and not water in the last minute running)

What i done so far is ....fill up the headers with water ...and after that pressurise with air at 7 psi .....and put some heat with propane torch ....and i see no water coming ....
i am little lost here .... i put not enought heat ? , tomorow i will post more picture
if i am not clear feel free to ask
Regards

Ok , what i found so far is , nothing special , i will reinstall the header , and after some running hour , take off and check again .....because after fill up with water and pressurise at 7 lbs , i use propane torch to heat up and nothing happen

Anybody have ever do a test like this ? , i am wrong ?
Christian

I have. I used air alone and no water. I put 20 psi on the whole system when I did mine, I let it site all night under pressure. By just testing the header you are assuming the problem can only be the header. What about an intake leak or head gasket leak on that cylinder? I would say your header is fine.

By the way mine tested fine under pressure but looked like this the pics below. Problem ended up being the flaps in the exhaust, or lack of.

Thanks for your reply tssteph , my 525 is a close cooling , and the level of my reservoir stay ok , this is why i think is not a gasket , condensation is possible ? , this is why i think to put back header , and made some driving time and remove and have a look in middle of the summer , what you think about that ? , sorry for my bad english
Regards

The oil temp should be around 220-230 degrees to keep the condinsation out of the oil. If you don't have a oil temp gauge you can use a heat sencing gun and shoot it at the oil filter to get a reading. Good luck

Thanks Velocity Vector for the reply , i have a oil temp. gage , and my oil always stay at around 220 , but my concern is the little drop at the exaust port ??? ....
Thanks again

What did the 3 & 7 plugs look like?