Ex 330 overheating

[IMPACT-EV1]

Thanks. That's some solid info. I'll check the heat exchanger tomorrow and try using a mirror or something to look at the pan. The manifolds were hot as crap, but the engine over heated so I expected that. Would the impeller not be shredded if the pump was bad after alot of use, bc it spanking new

If the manifolds where smoking hot then the RWP is installed backwards or there is a restriction in the line somewhere or there is a leak on the pick-up side of the suction hose for the RWP allowing it to suck air instead of water.

On a closed system the RWP suck up water and feeds the exchanger than that goes out to the manifolds and out the back of the boat, basically. if you have a sea strainer in line they are a likely source for leaks, bad o-ring, not tight enough, cracked bowl or fitting. double check the hose clamps with a 1/4 drive ratchet and not a screw driver.

[SkiTundra]

and try using a mirror or something to look at the pan.

Sometimes a video camera is easier. A cheap one connected to the USB port on a laptop works well. You can tape it and a cheap tiny LED flashlight to the end of a stick and get in all kinds of places.