87 gas club car

amp077 · 12-18-2009, 10:18 PM

90psi.....I added a little oil and didnt get much better. Valves??

scottyb · 12-18-2009, 10:30 PM

Maybe? Either way I don't think you would want to open the engine for repair and not do a rebore, piston, rings, and reseat the valves? I did one recently and shaved .050 off of the head to increase compression a bit. It ran nice and strong.

amp077 · 12-18-2009, 10:44 PM

You just killed my buzz....Would it be easier to get another engine or trade it in?? I'm not much on overhaulin golf cart engines...

invalidsession · 12-19-2009, 03:54 AM

Quote:

Originally Posted by amp077

90psi.....I added a little oil and didnt get much better. Valves??

Where did you add the oil, through the sparkplug hole ?
No significant improvement in compression would point to valve leakdown. Do you feel any pulsation through the carburetor intake ?

Chris.

amp077 · 12-19-2009, 09:56 AM

I did add it to the spark plug hole and I do feel some pulsation at the carb intake. It almost sounds like exhaust coming back .

invalidsession · 12-19-2009, 10:29 AM

Amp, I would strongly suspect a sticking valve if you have pressure ( however slight ) coming back through the intake. Others here have reported that carbon pieces have caused valves to stick open. 1st stop would be to pull the head and have a good look around. Another trick if you have the facility is to pressurise the cylinder while at TDC and listen / feel for air coming through the exhaust outlet or carb throat.
Hope that helps,

Chris.

amp077 · 12-19-2009, 03:29 PM

Chris, when I put about 20psi in the cyl. it turns sound like some air might be coming out of the exhaust, but it also tries to turn the engine over. When I run it full throttle I can feel air pressure coming out of the carb intake. Even 5 inches away. That sounds like an exhaust valve doesnt it. The only way to unstick it is to pull the head???

amp077 · 12-19-2009, 03:42 PM

Wait, if the engine turns with pressure then both the valves should be shut. So the exhaust valve has to be stuck shut, right? Any idea where I can get engine info on line or do I have to buy a service manual. I have never worked on small engines, but I can only assume they have lifters if a valve can stick.

invalidsession · 12-19-2009, 04:49 PM

Sounds like an exhaust valve issue Amp. You have the flat head motor right ? Easy enough to pull the head and a gasket set is pretty cheap. Check the bore while you are in there as per Scottys post and with luck you will be good to go. The reason the motor is turning might be due to a very small leak which will show some but not all of the necessary compression to allow the engine to run smoothly. It doesn't take much to cause your symptoms.

Chris.

amp077 · 12-19-2009, 04:54 PM

Thanks for the info. I'll pull the head and let you know. Thanks again!!!!!!!!!

12-18-2009, 10:18 PM	#11
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17	Re: 87 gas club car 90psi.....I added a little oil and didnt get much better. Valves??
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17

12-18-2009, 10:30 PM	#12
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,410	Re: 87 gas club car Maybe? Either way I don't think you would want to open the engine for repair and not do a rebore, piston, rings, and reseat the valves? I did one recently and shaved .050 off of the head to increase compression a bit. It ran nice and strong.

12-18-2009, 10:44 PM	#13
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17	Re: 87 gas club car You just killed my buzz....Would it be easier to get another engine or trade it in?? I'm not much on overhaulin golf cart engines...
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17

12-19-2009, 09:56 AM	#15
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17	Re: 87 gas club car I did add it to the spark plug hole and I do feel some pulsation at the carb intake. It almost sounds like exhaust coming back .
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17

12-19-2009, 10:29 AM	#16
invalidsession Gone Wild Join Date: Aug 2009 Location: Eldon Missouri Posts: 977	Re: 87 gas club car Amp, I would strongly suspect a sticking valve if you have pressure ( however slight ) coming back through the intake. Others here have reported that carbon pieces have caused valves to stick open. 1st stop would be to pull the head and have a good look around. Another trick if you have the facility is to pressurise the cylinder while at TDC and listen / feel for air coming through the exhaust outlet or carb throat. Hope that helps, Chris.

Today
BGW	Sponsored Links __________________ This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum

12-19-2009, 03:29 PM	#17
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17	Re: 87 gas club car Chris, when I put about 20psi in the cyl. it turns sound like some air might be coming out of the exhaust, but it also tries to turn the engine over. When I run it full throttle I can feel air pressure coming out of the carb intake. Even 5 inches away. That sounds like an exhaust valve doesnt it. The only way to unstick it is to pull the head???
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17

12-19-2009, 03:42 PM	#18
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17	Re: 87 gas club car Wait, if the engine turns with pressure then both the valves should be shut. So the exhaust valve has to be stuck shut, right? Any idea where I can get engine info on line or do I have to buy a service manual. I have never worked on small engines, but I can only assume they have lifters if a valve can stick.
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17

12-19-2009, 04:49 PM	#19
invalidsession Gone Wild Join Date: Aug 2009 Location: Eldon Missouri Posts: 977	Re: 87 gas club car Sounds like an exhaust valve issue Amp. You have the flat head motor right ? Easy enough to pull the head and a gasket set is pretty cheap. Check the bore while you are in there as per Scottys post and with luck you will be good to go. The reason the motor is turning might be due to a very small leak which will show some but not all of the necessary compression to allow the engine to run smoothly. It doesn't take much to cause your symptoms. Chris.

12-19-2009, 04:54 PM	#20
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17	Re: 87 gas club car Thanks for the info. I'll pull the head and let you know. Thanks again!!!!!!!!!
amp077 Not Yet Wild Join Date: Dec 2009 Posts: 17