I have 93 Gmc safari 4.3 I am having trouble. It is running realy rugh just like it did about two years ago and I ended up having to put in a new cpi spider injector, and a new wireing harness. that fixed it but now the same problems are showing up agin and I need some help. I have already so far replaced the cpi injector, wireing harness, distributer cap, and cleaned out the gas tank. I dont know were to go from here. If you guy could give me a little insight on where I should go from here it would be greatly appreciated.
It is not misfireing, and there are no check engin lights but I have one of those code readers where it gives you a code for however many times it blinks, I am geting a all clear signal wich means the computer thinks its fine. There are no fumes or oders being emited that I can tell. It runs ok some times and then it starts running horeable and it cant climb hills for any thing.