migara422

Hi everyone, i have stainless marine exaust with the risers, i just redone the heads and when the mechanic put everything together I run the motor on the trailer and I notice that one of the risers was leaking a little water from where it conects to the manifold, is there water passing through there? i thought it was just exaust in that section, obviously if not water there then its a cracked riser. Any help would be appreciate it.

masi242

I had this happen on my last boat, I took my risers off an had them checked, I have heard that they can be a little warped or just not perfectly flat, Have them checked to see if they are true, just my .02.

good luck

Danny_Ocean

Depending on your set-up, water may or may not pass through the joint. Did your mechanic install a new riser-to-manifold gasket? Did he utilize the correct gasket? Does he know what he's doing?

I would replace the gasket and see if the leaking stops.

There are very few mechanics who are top-notch and detail oriented. After suffering from a leaking riser (allegedly repaired by a certified Mercruiser mechanic), I discovered he used the wrong gasket and, to compensate, loaded up the joint with red goop.

D. Ocean
Pompano Beach, FLA

migara422

thanks for the replies.
The guy told me that i need it gasket, but it seems that there is no water in there even if the gasket is bad there should be leaking exaust and not water. I dont think he is as good as he says, but then again im not an expert thats why im here trying to figure this out. Here is a picture of the exaust and riser, i wish i could of looked inside when they were out. The reason im trying to figure this out is to make sure he doesnt put a gasket and stop the leaking to the outside but it leaks into my motor and then ill be an angry man.

jpclear

If the pieces (manifold and riser/tail) are sound then you have a leaky connection and a reversion situation. Keep checking cause you don't want the reversion thing. --- Jer