My club car gas golf cart was running good then al the sudden wont go over idle speed

It looks like they are not vacuum hoses, but overflows and vents. 1991 was when the model changed.

https://golfcartpartsdirect.com/Category/50

https://www.google.com/search?q=1991+Gas+Club+Car+Golf+Cart+vacuum+hoses

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I need more detail on this, exactly what does it do, misfire what?

Ok ...is the air filter been changed ...start there first.at idle the engine isn't in need of any big air and will use the surface air around it to run.if there is any air restrictions for air to flow it won't .then that's when engine dies.make sure it's getting enough air
Number one thing of all thing that run on gas at fault is the neglected air filter.a engine that runs on gas needs 3 thing to make it go fuel.spark.and you guest it air!

Smoke is not a good sign. Running rough is not a good sign. Oil light not a good sign. You could have a combination of bad things, most likely expensive. Suggest professional help. Smoke can be bad rings or holed piston. Low oil pressure can be bad bearing or oil pump.

Try putting in an additive in your gas tank that cleans the fuel injectors. if your fuel filter was that dirty, the fuel injectors may be gummed up.

Change air filter, oil, spark plug, cable to battery, When changing the oil, there is no need for a new filter. Just wash the old one with carb clean. Held in by 3 small bolts beside the drain plug. Check the rear end oil (90 weight) use the upper plug. Fill till it runs out. Grease the front end. Change the fuel filter. Drain the carb if it is going to sit thru the winter.

Check you're catalytic converter, Dont know how fast 40-60 KPH is but if it is near 40 miles per hour and has no power up hill that would be the first thing I would check. second would be Fuel pump... Hope this helps

Replace the pick up coil in the distributor,this is the problem.

exactly same problem on mine m8.....a good service fixed the problem.....new air filter, oil, oil filter, spark plugs, distributor cap, rotor. when i took the air filter out and looked at the air flo pipes they were clogged up with white gunk....means the engine wasnt breathing rite. i cleaned it with break cleaning fluid. i dnt no which 1 of these solved the problem....but my guess wud be the pipes

The best solution is to do a complete tune up with new spark plugs, wires, fuel filter, air filter, pcv valve and oil change.. If this still happen I would get some fuel injector cleaner, or use marvel mystery oil in both your oil(crankcase) and gas tank. You can get mystery oil at walmart..its in a red bottle with black label.