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06 mercury 4 stroke 115

This topic has 2 replies, 3 voices, and was last updated 5 years, 8 months ago by Bass Cat Boats.

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October 15, 2020 at 5:37 am #694110

jasper01
Participant

I have a Merc 115 4 stroke 2006 on a pontoon. It cranks great,idles great. and about half throttle or above will miss bad and nearly die. This happens evert time until running it about 30 minutes and then it is fine at all speeds until the next trip. Any advice is welcomed.

October 15, 2020 at 7:55 am #694113

apdriver
Participant

I would post this question on BBC (Bassboatcentral) in the Mercury 4 stroke forum. Some really knowledgeable engine guys over there. They will need to have your serial number and is required in your post so have that in hand when you post your initial question. Good luck with your issue.

October 15, 2020 at 9:10 pm #694125

Bass Cat Boats
Keymaster

Sounds like an ethanol issue and we would change out the fuel first and then we would run new fuel, with a fuel additive. If that doesn’t work it our after 20 minutes the damage may be done and it also could be an ignition issue as that’s where he bump the timing beyond mid range.
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