1972 merc 800 Looping at idle

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scooter3671

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Apr 8, 2010
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I have a 1972 merc 800 that is looping and will kill at idle speed. If it is at fast idle it won't kill but still loops. I just replaced the water pump because I took it to the lake and it ran for 4 to 5 min with no water cooling I think. Could this be a blown head gasket from overheating? Also is 50:1 the correct fuel ratio?
 
Bondo

Bondo

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Re: 1972 merc 800 Looping at idle

Could this be a blown head gasket from overheating?
Click to expand...

Ayuh,... I think it's not getting it's Fuel properly...

It Can't be the Headgasket,...
That motor Doesn't have a Head,... hence, No headgasket...
 
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