150XP Problem with Warm Restart.

madbanchee

Seaman
Joined
Aug 17, 2004
Messages
52
I have a 1989 Evinrude 150XP that starts cold and runs fine until it is shut off and restarted. I can idle, race WOT, or cruise from a cold start through high temp; but when I shut it off for just a few seconds and restart, it loses power and dies as I increase throtle while in gear only but if I push the choke on the ignition switch it gets full power back and all seems normal again. When it is in this troubled state it will idle fine and increase throtle when in neutral, just not in gear. I'm not sure if this is related to fuel or electrical. -- Any ideas???
 

Hooty

Rear Admiral
Joined
Oct 2, 2001
Messages
4,496
Re: 150XP Problem with Warm Restart.

If choking (priming) has an effect, I'd sure start looking at fuel delivery. <br /><br />c/6<br />Hooty
 

madbanchee

Seaman
Joined
Aug 17, 2004
Messages
52
Re: 150XP Problem with Warm Restart.

Fuel seems reasonable to believe but I can't find leaks in any of the supply lines. Any suggestions where I should look or what I could test? Does it seem at all possible that this could be related to the PowerPack or stator in any way?
 

Hooty

Rear Admiral
Joined
Oct 2, 2001
Messages
4,496
Re: 150XP Problem with Warm Restart.

Yeah it could be stator or p/p related but I can't see where bumping the primer would effect it if it weren't fuel related. What happens with the pressurizing bulb? Does it go flat? Have you tried pumping it? <br /><br />c/6<br />Hooty
 

madbanchee

Seaman
Joined
Aug 17, 2004
Messages
52
Re: 150XP Problem with Warm Restart.

The bulb stays somewhat firm. I thought the power pack might be the cause somehow by controling the timing advance. I know when starting at cold temp the timing is supposed to advance but I don't know what is supposed to happen when the engine is warm. The problem will show up EVERY time the engine is restarted warm, even if it is shut off for a couple seconds. Thanks.
 

Hooty

Rear Admiral
Joined
Oct 2, 2001
Messages
4,496
Re: 150XP Problem with Warm Restart.

You might try puttin' the engine on the hose, warm the p/p up with a hair drier and see if that duplicates the warm start problem. <br /><br />c/6<br />Hooty
 

madbanchee

Seaman
Joined
Aug 17, 2004
Messages
52
Re: 150XP Problem with Warm Restart.

The problem only exists under load in gear. When in neutral it revs up fine. Your idea gives me a new thought however. I think it may be worth it to try some freeze mist on the power pack and stator to cool them down when I have the boat on the water. Thanks. Still looking for suggestions related to the fuel system. I don't know what I can test. I've been told I may need the carbs rebuilt but wouldn't the thing hesitate or act up all the time?
 

marinemech

Petty Officer 1st Class
Joined
Aug 12, 2004
Messages
250
Re: 150XP Problem with Warm Restart.

there was a defective gasket used under the top cover of your carbs remove top cover inspect gasket if its black with no slots cut in it replace all three gaskets<br />new gaskets are brown with slots cut in them this may be your problem
 

madbanchee

Seaman
Joined
Aug 17, 2004
Messages
52
Re: 150XP Problem with Warm Restart.

Are you referring to the intake cover/silencer or the mounting gasket for the carb. Doesn't the intake cover have one large gasket around all three carbs? I'm not sure what you mean.<br /><br />I appreciate the help... Thanks!
 

qapd

Seaman Apprentice
Joined
Aug 18, 2004
Messages
32
Re: 150XP Problem with Warm Restart.

I had exactly the same problem with and Evenrude. Try running WOT and holding the choke in till she almosts dies. Do this several times. Hopefully you will suck out what is plugging the carbs. If this fails it will be a carb rebuild.<br /><br />Larry Smith<br />Pasadena, Tx<br />'97 Mako 191
 

madbanchee

Seaman
Joined
Aug 17, 2004
Messages
52
Re: 150XP Problem with Warm Restart.

Still not convinced this is a carb problem. If it were, why would this only show up when the motor is warm?
 

Walker

Captain
Joined
Jun 15, 2002
Messages
3,085
Re: 150XP Problem with Warm Restart.

Since you can make itn run by choking it, it pretty much rules out everything but a fuel delivery problem.
 

madbanchee

Seaman
Joined
Aug 17, 2004
Messages
52
Re: 150XP Problem with Warm Restart.

I realize this is fuel delivery but many people are saying this is caused by a dirty carb and I can't understand why since the problem only shows up DURING THE FIRST ACCELERATION AFTER A WARM RESTART. Once it gets up to speed it can return to idle and will not have any problem accelerating again unless the the engine is restarted while warm. It seems to me if ithis was carb specific I would have problems at other times besides THE FIRST ACCELERATION AFTER A WARM RESTART. The initial cold start works fine.
 

Pst76

Petty Officer 1st Class
Joined
Aug 11, 2002
Messages
220
Re: 150XP Problem with Warm Restart.

One Idea you may want to look at,I have a 92 Johnson 150. On the top of the motor where the OIS sensor is the plactic ring that advances and retards timing sits in a plastic frame as well. Mine had gotten to where grease and dirt had caused the spring not to be strong enough to pull back when idled down or shut off. I cleaned and re greased making sure rotation was un restricted.Would be like trying to start with timing advanced.<br />Just a thought
 

madbanchee

Seaman
Joined
Aug 17, 2004
Messages
52
Re: 150XP Problem with Warm Restart.

I think it's fixed now - Thanks Everyone!<br /><br />Take a look a look at THIS .
 
Top