I'm new to the board but I am already impressed with the info contained here. I have an 81 CJ-5 with a GM 4 cylinder. I am having a couple of problems with it and need some help. When I drive it for several miles it leaks antifreeze from the overflow on the radiator. It doesn't seem to be running hot, but I seem to be losing quit a bit of antifreeze when I park it.
I know the solution to the next problem but, putting in a bigger engine has to wait until next year.
The engine seems to have lost power since I bought it several months ago. I have to downshift to get up even small hills on the road. I have replaced the plugs, and checked the timing. The engine had been rebuilt before I bought it and doesn't burn any oil. Any ideas of things to check or possible cheap mods to get more horses out of this thing until I can do my engine swap next year.
Re: Questions about overheating and lack of power.
could the thermostat be stuck closed or very close to closed which causes the engine to overheat and make the anti-freeze over flow since the anti-freeze can't circulate and causes it to boil, and when your motor overheats you will lose power.. just a thought...