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Adrift
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46 Posts
Discussion Starter · #1 ·
Here is what I know about the boat/engine:

-1gm10 w/410 hrs. Not sure of service history.
-boat sat from fall 2013 to May when I bought it.
-it had about 2/3 tank of diesel, I filled it in May and put fuel treatment in.
-I changed the oil, filter, tranny oil.

The engine starts and runs well, but won't rev over 2500rpm. It also surges a bit, at full throttle is remains at 2500rpm, and occasionally goes up to 3000 only to drop back down. Also, if I drop the revs, then 'gun' it, it will go above 2500 for a short time before dropping back.

I'm thinking some kind of fuel delivery problem....time to change the fuel filters? I drained the fuel filter today and fair bit of black particles came out....this also got air in the system so I know I have to bleed it next time.

Any advice/additional info. appreciated. Hoping it's not a big job!!!
 

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Adrift
Joined
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46 Posts
Discussion Starter · #3 ·
Hello. In drive.

To be honest I didnt think to do this in neutral.

The boat needs a bottom job, but was power washed and the prop was relatively clean.
 
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