Originally Posted by jeep670
Okay..when i start the engine it sounds like its misfiring then once i get it going it would start to sputter an i would lose power ..when once the engine is really hot it would stop sputtering then once i pass 3000rpm it would start to sputter
So it idles, just misses like its only hitting on 4 or 5 cylinders.
The first thing I would check is for vaccume leaks. I normally use a piece of hose to my ear and plug the other. With the engine running use the free end and check all the lines, the intake manifold where it meets the block, the charcoal canister, (by the firewall on the drivers side, looked like a coffee can) and around the carb. Listen for hissing or sucking air.
With the engine still running, and with a really well insulated pliers, a thick rubber glove would be good to. Rubber sole shoes and not touching the body also help from getting shocked. Pull off a plug wire at the plug, listen for any change in the engine. Do all 6 one at a time. They make a special tool for this, its not very expensive. Don't pull from the wire, pull from the boot.
With the engine off,
Back off the screws holding the distributor cap, (they don't come all the way out). Look inside the cap for black lines also check the silver or gold color terminals for corrosion.
A bad fuel pump, and corroded lines or pin holes in the line can also cause problems like this. A fuel pump needs to pump a given amount of gas in a given amount of time. The pump, to me is the most likley problem.
This is not something to just throw new parts at. $100 could easily be spent, and not solve the problem.
Everything I've written is free, except the fuel pump.