Rebuild

[Waterloo]

The exhaust gas, if there is something truly wrong, could be so minimal that you will not see a pressure increase in the coolant system idling in your driveway. I know on mine it slowly got worse, to the point it was blowing hoses and eventually blew my radiator apart.

My first tell, was coolant rising and falling in the bottle after finishing for the day. Then down the road, a month or two, I would see that coolant had went past the coolant bottle cap.

Then soon after the coolant lines would start seeping coolant. Then the older coolant lines started splitting, with the new lines eventually just blowing apart.

It was all over when the motor was shooting coolant up over the top of the sleeper when idling in my driveway... The entire process took about a year and a half to get to that point. So, you have time if there is something wrong...

Me, I would drop the pan, pressurize the coolant system to 20psi, let sit over night and in the morning someone needs to be under the motor and someone else barring the motor over. You need a quiet area, because if there is a fretted liner, you will hear the coolant gurgling if it is to that stage. You will also need a flashlight, a good one, bright, you are looking for coolant on the liner walls as your buddy bars the motor over.

I think the photo will show up... This is my #5 liner, photo I took prior to tearing my motor down. This is what you are looking for. Click on the photo to get a better view...