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My dad asked me this after we were trying to figure out why my boat is running hot and going into limp mode. And I had no idea. He says I should junk the manifolds risers, and muffler and I guess basically come right off the header straight through the hull.
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1997 SuperSport GT-40 -
coolee or coolor
the exhaust manifolds are cooled by the raw/lake/fresh water so the engine can be run in a closed enviroment (under the lid/clam shell) and not get hot.
i snagged this from skidim.
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OVERHEATING TROUBLESHOOT
(Question1) -What is normal operating temp for your boat?
(Question2) - Does it stabilize? As long as it stablizes you are generally okay.
__________________________________________________ ____ ALWAYS Start At The Source, at the Clamshell or the Water Pickup.
1) Ck Tranny Cooler For Blockage.
2) Ck Water Strainer for O-ring.
3) Ck Impeller for wear.
4) Run Volume Efficiency Test on R/W pump (15 sec, 3000 rpms
to fill a 5 gal. Bucket). Determines if problem is before or after
the R/W pump.
5) Remove T-stat, see if it runs cool indicating you had a stuck thermostat. Replace if necessary.
6) Check circulating pump:
1) Screw hose barb into engine block drain.
2) Rev engine, it should shoot water out.
3) If it dribbles out, you've proven circ pump is bad.
7) Check Guage by: Taking wire off and ground it. If it
peg's gauge, that indicates gage working and you may have a sender problem.
9) Do the hand test on each riser. If the top of the riser gets too hot to touch, you're over heating the exhaust system.
THE BOTTOM LINE IS-Building up heat at idle is generally an impeller problem!red right return -
sorry, i did not read your other post.
can you stop by the local ford place and get the temp vs resistance for you temp sensor ? i should be able to get one if you can't.red right returnComment
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