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  1. D

    Only starts with Muffs

    I have an 1989 OMC Cobra 2.3L engine. Engine was overheating, so I started by putting in a new impeller and checking to see that the thermostat was opening and closing by boiling on stove, it was; I put thermostat back in, took the boat to the lake and it would not start. I brought it back to...
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    Thermostat

    Can anyone explain briefly how to go about removing the thermostat on a 1989 OMC Cobra 2.3L engine. I want to check to see if boat runs hot without it in. I have replaced the impeller although it was intact, the housing had a couple of spots where it appeared to have some melting. Is it a...
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    Thermostat

    I have an OMC Cobra Model 2.3 Litre engine and it overheated. I have put in a new water pump and was wondering if it continues to overheat if the next option is to check the thermostat? How will I know if the thermostat is bad? If I need to replace thermostat, is it a relative easy task...
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    Water Pump Replacement

    I have a 1989 VIP vision with OMC Cobra Outboard. The engine starts but then overheats & has no power once I am out on the lake. I was told it was probably a bad water pump. How difficult is it to replace a water pump? Can a novice do it?
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