this problem comes and goes. start car and it loads up smokes and gets 5 mile to the gal. had put on snapon comp it says tpc bad replaced and set at 54v. it started running great for 5 or 10 min. then did it agin. comp says tpc out of adjustment agin. cleared codes
now it says i have 8 or more things not right or failing. so i replaced computer with new one. it worked for 30miles started loading up and smoking agin.iny input would be helpful. Thanks

 

What exactly are the codes you're getting??? They are usually right, and can help pinpoint you to the source of the problem.

 

Pull the vacuum hose off fuel pressure regulator and see if there is any fuel in it. Also check fuel pressure to see if pressure is to high. Also, post the code numbers to see if we can help.