Water getting in at idle! Hard to start!

[KK 9]

I have been off and on chasing this problem. It's very annoying ski is a blast to ride. I have a 90 superjet with 6m6 bottom 61x top bored .5 over. Westcoast head, b pipe, dual cooling. It gets water (not a lot) in the cylinders at idle. I have replaced head gasket, and exhaust gasket. Checked both surfaces with a squares for warp. I even took top end off and pressure test the water passages. I am thinking I need a flow control valve any one have any thoughts?

 

[b.lee]

Have you checked the head to see if its warped?

 

[KK 9]

The best I could with an straight edge plus the last time I pulled the head (last weekend). The head gasket looked good no signs of leak

 

[Quinc]

coming back in through the exhaust?

 

[amitchell]

Do a leak down test, that will let you know if you are leaking water in or air out.

 

[KK 9]

As many times as I've tore back onto the motor it looks like to much water building up in the exhaust. You can hear the idle drop down after about a second or two of idling. Now if you getting on it to clear the throat right before you poop her off she'll start back up easier but not perfect. If I let her idle and then kill it you really got to play with the throttle but she comes alive. So I idled her back in and killed then pulled the plugs just a little water on them not loaded up bad.

 

[KK 9]

I feel like an idiot. I think I figured it out. I'm running an 6m6 exhaust gasket on a 61x. But I'm leaving for 3 weeks for some military training so won't know till I get back.