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I started my outboard last night (mariner 75hp 4 stroke non-efi) after full service and servicing the water pump. There was no problem with the water pump and water flowed nicely.
There was however an occasional stumble by the motor. Its hard to describe, I dont know what a misfire sounds like and I dont think it was a misfire, it was just like a cough or a hiccup every so often - only at idle. She did not cut out though.
I am thinking a decent run might clear this and that it could be some old fuel gunged up in the carbs. We did run the outboard out of fuel at the end of the season though.
What can I do to further diagnose this? Or indeed fix it? I am bit loathed to wait until I get the boat back in the water as its a hassle to haul her in and out.
Could it be carb settings or timing that is out?
Thanks as per usual,
Ryan
There was however an occasional stumble by the motor. Its hard to describe, I dont know what a misfire sounds like and I dont think it was a misfire, it was just like a cough or a hiccup every so often - only at idle. She did not cut out though.
I am thinking a decent run might clear this and that it could be some old fuel gunged up in the carbs. We did run the outboard out of fuel at the end of the season though.
What can I do to further diagnose this? Or indeed fix it? I am bit loathed to wait until I get the boat back in the water as its a hassle to haul her in and out.
Could it be carb settings or timing that is out?
Thanks as per usual,
Ryan