throttle trouble?

Fox16

Seaman Apprentice
Joined
Mar 18, 2009
Messages
34
- 1996 evinrude 48 spcl.

Two days in a row my motor has been acting wierd, it has never done this before. I launched the boat and planed out fine. I drove for about 5 minutes and then throttled down to idle. Shortly after, i tried to plane off again but i couldn't get any power. When I pushed my throttle forward, my engine sounded like it was drowning and would cut off. Five minutes later, it would plane off perfect and randomly i would have the same problem throughout the afternoon. I thought it might be a float in the carb or the spark plugs. I put new plugs in and pulled the carbs off. the carbs look good, i ran some cleaner through them and reinstalled them. the next day it did the same thing. any ideas?
 

Barnacle_Bill

Admiral
Joined
Feb 8, 2004
Messages
6,469
Re: throttle trouble?

Check for spark at all plugs when it is doing that. You may be dropping a cylinder)s).
 

Fox16

Seaman Apprentice
Joined
Mar 18, 2009
Messages
34
Re: throttle trouble?

Do you think the spark plug wires could be corroded and need replacing?
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: throttle trouble?

is the vent open on the fuel tank???? classic symptoms.
 

Fox16

Seaman Apprentice
Joined
Mar 18, 2009
Messages
34
Re: throttle trouble?

i did some more reading, and Im starting to think it might have something to do with the ignition system. From checking symptons, it sounds like i might have a bad ignition module. Any ideas ?
 

Gary H NC

Fleet Admiral
Joined
Dec 1, 2005
Messages
8,972
Re: throttle trouble?

The next time it does it look at the fuel primer bulb and see if its sucked flat.
I would try to rule out fuel system problems first.
 

Fox16

Seaman Apprentice
Joined
Mar 18, 2009
Messages
34
Re: throttle trouble?

I'm 100% sure the vent was open on the gas tank. Should I check out my fuel pump?
 

Fox16

Seaman Apprentice
Joined
Mar 18, 2009
Messages
34
Re: throttle trouble?

I think it might have been bad gas. I Put new gas in and it runs fine!
 
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