I am having fuel problems again.At 40k I had to replace an accuator valve on my cp3 and it solved my stumbling problem.That was fixed by the dealer under warranty.You guys diagnosed the problem for me then(although it took them a week after me telling them what was wrong).I am at 81k now.Last week it started the same stumbling so I replaced my valve again myself.It seemed to run perfect for 2 days an then went back to stumbling again.You think the pump is going south?Do I need to replace the cp3 and a new lift pump kit.If so which kit and where can I buy everything I need to do the whole job.I dont have time to fool with the dealer.I need my truck every day.I have a mechanic who will help me on the weekend.Thanks for any replies in advance.

 

first do a fuel volume test. When you bump the starter to prime the fuel canister but do not start. Check to see if you get about 45 ounces of fuel into a container in about 25 seconds. Genos has a better explanation for doing the test.