overheating question??

[Dilligaf]

its raw water cooled and i just let it idle when flushing.. do i need to run higher rmps when flushing. heard it might be my impellar since when running on water was fine and at idle flushing heated up

[1bayouboy]

I'm not sure about the RWC engines....mine is FWC and it definitely will overheat at idle on the hose.....but it'll run all day at 1200rpms and stay on 160 degrees.

[Dilligaf]

thats hopefully it. the hose is kinda small diameter and looked like a lot of water comeing from the muffs leaking. it only got to 3/4 temp when the alarm went off engine should be ok turned it off right away