over heating

mr elevman · Post by **mr elevman** » Fri Aug 05, 2011 5:25 pm

hello all last weekend i started to over heat the port moter let me start by saying pick ups are clean strainer is clean cirk pump is good and impeller is 1 year old new 160 deg stat and timimg is dead on 5 deg 318 fwc and i was running 2500 rpm stb moter is fine any ideas

koviak · Post by **koviak** » Fri Aug 05, 2011 6:18 pm

Check your oil cooler for blockage. Just cleaned mine last weekend with descaler and temp dropped 20deg.

9rock · Post by **9rock** » Sat Aug 06, 2011 7:53 pm

Fresh or raw water cooled,,
Im chasing same problam , I think I found the problam in the risers, , mine would over heat slowly after getting on plane, coupled with slight loss of atifreez after pulling manifolds and risers the risers are severly rusted,, I have fresh water manifolds, that seem to be ok,

9

rooferdave · Post by **rooferdave** » Sun Aug 07, 2011 10:05 am

1st and foremost I would verify the reading with an ir gun, first make sure there really is a problem then start the diagnostics. The 2nd I would do is back flush the engine for debris, tranny cooler etc as it says above. These are cheap and easy places to start.

mr elevman · Post by **mr elevman** » Sun Aug 07, 2011 12:33 pm

yesterday i checked the front of the trans cooler and it was clear then i pulled the heat exchanger end caps and the tubes were 50% cloged with a slime like goo all most like a jelly fish got sucked in witch i cant see happining cuz the raw water strianer was clean any way i cleaned the tubes with a long thin wire brush took her out for a spin and never went above 170 i wish i knew what the goo was