1971 Mercury 9.8 shuts off after running for about 5 minutes wot(have repaired b

dmorris213

Recruit
Joined
Jul 5, 2004
Messages
2
I have a 1971 Mercury 9.8hp 110 and have done the following work to it recently to try and resolve the problem. It will shut off when I run it full throttle after a few minutes. Starts right back up after 2nd pull and idles fine. Just dies wide open.<br /><br />Any suggestions? Could it be something with the float in the carb? Not sure what to do with it now.<br /><br />Could the power pack have anything to do with this? Wondering if it could be losing spark when full throttle.<br /><br />I have done the following:<br />- new fuel line<br />- new vacuum hose<br />- new spark plugs<br />- new spark plug wires<br />- cleaned carb<br />- fuel pump appears to be pumping fuel okay<br />- water pump works great
 

Elmer Fudge

Lieutenant Commander
Joined
Aug 25, 2003
Messages
1,881
Re: 1971 Mercury 9.8 shuts off after running for about 5 minutes wot(have repair

Re: 1971 Mercury 9.8 shuts off after running for about 5 minutes wot(have repair

Make sure that the straps on the fuel lines are tight and air is not being sucked in. Also check and see if the fuel tank is venting properly.
 
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