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98 merc cuts out at full throttle

B

bloaky

New member
"I installed a carb kit and it

"I installed a carb kit and it started on second pull and ran like a charm on idle and low speed, but when I go full speed it keeps cutting in and out. Does anyone have any suggestions."
 
Is it cutting out because of a

Is it cutting out because of a fuel stoppage or is the spark cutting out?

You need to troubleshoot - check to see if it's losing spark.
 
I would say its fuel since it

I would say its fuel since it starts and runs ok at low throttle. How would I check spark at full throttle?
 
"It's easy with a buddy on

"It's easy with a buddy on board, but even by yourself, you can rig up a timing light and just leave the hood off..."
 
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