Originally Posted by Steve83

If the truck isn't running right, and you change parts without diagnosing the problem, you can't know if the new parts helped or hurt. (YES, new parts can be bad.) Don't do maintenance while there's a problem. Diagnose & repair the problem FIRST, then throw parts on for no particular reason. If the truck suddenly runs worse, you'll know it's the new parts. But if it already runs badly, you won't notice, and diagnosis will be harder because now there are at least 2 problems to find.

If you want us to really help, you have to put ALL the truck's details into your signature so we can see them with each of your posts. Click this & read the caption:


(phone app link)