I have a 1994 z28 and my engine needs some work . First off it has about 180,000 miles on it and when i start it, it doesn't always stay running, it idles very low, and it shakes very badly. I have gotten a couple opinions but I would like more...Some people say it may be due to spark plugs and wires needing to be changed, or there is an exhaust leak by the cat, and possibly a leak by the manifold. Some other people say that it isn't getting gas, and that it may be a fuel line problem or a injection problem. I know that it is not running on all cylinders. I really need to have this fixed and any input on it would be greatly appreciated.

 

How long have you owned it? How long has it been since it had a good tune up?