Merc 115 four stroke 2016
by Dwayne Terrebonne
Engine will run perfect for around 15 minutes at 4800 and their very intermittently start missing or stuttering. As time progresses it gets more frequent slow below 4000 and stops. Accelerate and starts again til i get to fish spot. Move spots and runs fine then starts intermittent again. Checked all plus with tester and look good. Replace inline fuel filter but wasnt dirty. Tested fuel for moisture and none found. Pulled fuel tank intake tube all good and clean. Bypassed anti siphon valve and did same thing so thats not problem. Im lost as to what else can be.
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