check the plugs and coils. do this first

additives for injectors rarely work.

carbon build up could be the pinging

roy

Answered by ASEMaster6371 (expert)
24,973 answers provided

I will change the plugs, and check the coils.. Thanks Kdzee

Answered by Kdzee
4 questions asked

Just giving everyone a follow up on what I did and the results. I changed the plugs and removed and cleaned all the injectors. I tested all the injectors, first by listening for a clicking sound while in operation. Then I removed them and submerged them in injector cleaner. I inspected all the O rings before reinstalling the injectors. I inspected all the coils and cleaned the contacts, they where green. I used a wire dryer to clean, and then put dielectric grease on all the electrical contacts. After everything was reinstalled, I reset the computer then just started driving for a couple hundred miles, the check engine light never came back on and the truck passed smog.

Answered by Kdzee
4 questions asked