engine turns over but won't stay running

Drindin

Petty Officer 3rd Class
Joined
Oct 21, 2006
Messages
80
'69 Merc 200 20hp:
In the last few weeks I have rebuilt the carb and the fuel pump (including hoses and brass elbows). This week I replaced the inlet needle, seat (made sure levers were measured correctly), and gasket because the old seat was not the right part; caused leaks. The motor was beginning to sound and run better until I replaced the needle. Now the engine fires up with a surge and almost immediately dies, with or without the choke engaged. My guess is maybe I tweaked the motor to run with the bad part; now it's all wrong. Any ideas as to why there would be such a dramatic turn-around and what I can do to get it back running good?
Also, this is a dumb question, but does this motor have REVERSE??? I thought it did but it acts like it doesn't now. I'm confused...
 

Plainsman

Rear Admiral
Joined
Apr 2, 2006
Messages
4,062
Re: engine turns over but won't stay running

Have you tried putting the old needle back in to see if it will run?
 

Drindin

Petty Officer 3rd Class
Joined
Oct 21, 2006
Messages
80
Re: engine turns over but won't stay running

No, I haven't. Finally, I got tired of it and am letting a guy at the shop take a look.
 
Joined
Oct 22, 2006
Messages
26
Re: engine turns over but won't stay running

Float in the carb is probably sticking. Same thing happened to me about 6 months ago when I rebuilt the carb on one of my engines. Have to dissasemble
 
Top