driver4hire
Recruit
- Joined
- Jul 2, 2016
- Messages
- 2
So, 1996 mercruiser 4.3l in a glastron gs185
Recently had a full tune-up done including plugs wires, cap, rotor, new battery, new pulleys, new water seperator, oil change, new alternator, new water pump and a few other odds and ends. They did not touch the carb.
I dropped the boat in the lake today and she ran fine for about 15 minutes, then it started to slow. I came to idle, it seemed to be fine. So I start to bring it up slow and it stutters and bogs and almost makes it up to speed. It just barely has any power at all. I barely made it back to the dock at slowest speed available. I sit and let it idle for a while then in neutral bring it to about 1/2 thottle. Minor backfires but no loss of power. The problem seems only under load.
My next step is to remove and clean the carb and check for any issues, I had it rebuilt a few years ago but didnt have this issue. I was told the carb was extremely rusty at the time of rebuild. Today I went to touch the adjustment screws on the carb but they are too seized to mess with in the boat. I will try and make an adjustment to them once the carb is out.
I am looking for any other potential issues that this could be. I only put 93 octane fuel in ever since the ethanol issues. Any help would be appreciated.
Recently had a full tune-up done including plugs wires, cap, rotor, new battery, new pulleys, new water seperator, oil change, new alternator, new water pump and a few other odds and ends. They did not touch the carb.
I dropped the boat in the lake today and she ran fine for about 15 minutes, then it started to slow. I came to idle, it seemed to be fine. So I start to bring it up slow and it stutters and bogs and almost makes it up to speed. It just barely has any power at all. I barely made it back to the dock at slowest speed available. I sit and let it idle for a while then in neutral bring it to about 1/2 thottle. Minor backfires but no loss of power. The problem seems only under load.
My next step is to remove and clean the carb and check for any issues, I had it rebuilt a few years ago but didnt have this issue. I was told the carb was extremely rusty at the time of rebuild. Today I went to touch the adjustment screws on the carb but they are too seized to mess with in the boat. I will try and make an adjustment to them once the carb is out.
I am looking for any other potential issues that this could be. I only put 93 octane fuel in ever since the ethanol issues. Any help would be appreciated.
