Evinrude 90 wont accelerate

[greeder]

I have a 90 HP evinrude that I replaced the plugs and it seems to run fine on teh earmuffs, but when I put it in the water and try to accelerate, it bogs down like the boat was full of water. Any help would be appreciated.

 

[jtexas]

Re: Evinrude 90 wont accelerate

classic symptom of clogged carbs. remove, disassemble, soak overnight in carb cleaner, blow through orficies with compressed air (or aerosol carb cleaner), reassemble with new carb kits, reinstall, link & sink, adjust mixture screws, if equipped.

what year?

 

[tashasdaddy]

Re: Evinrude 90 wont accelerate

Welcome to i boats. when posting please include year, there are millions of 90hp rudes. clogged high speed jets, pay special attention to them.

 

[greeder]

Re: Evinrude 90 wont accelerate

Sorry...Its a 1983. If it was the carbs, wouldn't I have the same issue accelerating on the earmuffs?

 

[tfbrown1270]

Re: Evinrude 90 wont accelerate

I don't believe the issue would be apparent until you put a load on the engine and you can't do that on the muffs

 

[hoeser]

Re: Evinrude 90 wont accelerate

Just a friendly tip, never accelerate your engine beyond 1500rpm on the muffs.

 

[jtexas]

Re: Evinrude 90 wont accelerate

I don't believe the issue would be apparent until you put a load on the engine and you can't do that on the muffs

true. you have thru-hub exhaust; when underwater, backpressure puts a load on the engine that isn't there in the driveway. These engines will sound great on the muffs even if a cylinder or two isn't hitting, then crap out under load.