I bought a '67 GS 4-speed with no motor and a running '74 Limited came with it. I'm gonna try and drive the Limited this winter but, I think the carb is in need of a rebuild. Here's the problem: Car drives down the road great and has great power but, idles real rough and will die if you don't clear it by hitting the gas.I pulled and plugged vacuum lines and found no leaks. If I put my hand over the carb and choke it the idle picks up and it runs better. Tomorrow I am going to put another carb on and see if it makes any difference. I'm assuming that I can just rebuild the carb and the problem will be solved,I just wanted some input from people with more carb experience than myself. Any advice or tips are greatly appreciated.
If choking it out makes it run smoother, and the idle speed picks up, it's lean, either from an undetected vacuum leak, low float level, or idle system setting or calibration. Put a vacuum gauge on it, and spray some WD-40 or gumout around the carb base and manifold, and watch the gauge/idle for changes.
Well I'd direct the spray specifically at the throttle rod bushings, the most common to leak air with everything else plugged. They do get worn out. :3gears:
Carb I sprayed everywhere around the carb and thought it might have had an effect but, it was very slight.I messed with the idle mixture screws and it helped a little but, not enough to solve the problem. Tomorrow I'll hook up the vacuum gauge and try another carb before I do the rebuild. The car is actually pretty nice except the vinyl top has rotted away. All the power windows work and the cruise control. I changed the plugs and they were all nice and brown with no sign of fouling. I'll post again after I mess with it tomorrow. Thanks
Carb Rebuilt carb and replaced the vacuum lines and it idles much better. Now I need to decide whether to replace the exhaust manifold gaskets or just live with it. It's just a winter beater, but I don't want to damage the motor as it runs and appears to be in real nice shape. Any advice on the gaskets? The only times I've had to take exhaust manifolds off is with the motor out of the car.Should I fix it or live with it?
If you decide to take them off, have them machined flat, and install them without gaskets. They didn't come with gaskets from the factory.
If you don't want to mess with the exhaust system under the car, you may be able to do them one at a time. You could just pry them out enough to get each gasket slid into place and not have to mess with the down pipes. I'd fix it if it was my car just because I couldn't stand listening to it! I've driven cars that were 6 colors and for some reason. that doesn't bother me but they have to run and sound good!! Ken
exhaust I probably won't machine them because I don't really want to open a can of worms with the rest of the exhaust. But,if it was a car I was going to keep I would definitely do it. Ken, I couldn't agree with you more on the looks bad and runs great opinion. I drove a '65 Fury for 4 years. It had some rust and saggy rear springs but, it never stranded me once and was easy on gas. I'll let you know what happens with the Limited.
