Carb HP500 Oil Overheating?
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Carb HP500 Oil Overheating?
Water Presure is at 20psi just like port eng, Water temp is 130 degrees just like Port eng but Oil temp stays at about 220-230 at cruise and got up to 280 at full throttle. I immediately came to idle and it went back down to 220. Port eng never gets above 180 degrees. Where should i start to look for this issue? Sticking Thermostat? Trash clogging water impeller pump? Any help would be appreciated. Also, I just had the oil changed and since it got up to 280, do you think the oil is now bad?
Thanks.
Thanks.
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I would check the water flow out the back of your pipes and compare it to the other engine. See if the flow looks the same. Next, check water pump impeller. If you have missing blades, then you most likely have some rubber clogging up your flow. I had that happen and I had to back flush it with a water hose to get the rubber pieces out. If all looks good, replace thermostat or take it out. I don't run a thermostat. Make sure your oil pressure is good. By the way, my water temp does not get over 100, but my engines run about 230-240 degrees. 280 degrees too hot. I would change oil if you find the problem.
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Verify it is actually hotter with a laser thermometer. Could be a bad sending unit.
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I would check the water flow out the back of your pipes and compare it to the other engine. See if the flow looks the same. Next, check water pump impeller. If you have missing blades, then you most likely have some rubber clogging up your flow. I had that happen and I had to back flush it with a water hose to get the rubber pieces out. If all looks good, replace thermostat or take it out. I don't run a thermostat. Make sure your oil pressure is good. By the way, my water temp does not get over 100, but my engines run about 230-240 degrees. 280 degrees too hot. I would change oil if you find the problem.
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would the water pressure gauge still show 20psi on both motors if a blade was broke off the impeller and clogged? Where/how easy is it to check for this and clogging? also, so i can just take the thermostat all the way out and it just stays as cold as possible? thx.
Last edited by UrbanDisturbance; 05-27-2011 at 12:48 PM.
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He says his water temp stays the same only oil goes up. So water flow ok. Oil filter may have collapsed. Or doesnt flow enough. What else was done? Doubt bad sender since it wouldn't work at all unless its loose.