tyler2136

I have all of the information on the cam, valves, and rods that were put in. The misfire at idle really started after the tune was done. Could it be just a crappy tune and I just need to give all the cam info to someone to get it re tuned?

Hi, I have a 2005 Silverado 5.3. This is my vacuum reading right now at idle with the truck up to temperature. The gauge pulsates at around 15 then drop to 13 the back to 15. Would anyone be able to identify what might be going on? I had a lean code that I was able to fix by changing out the spark plugs. The truck still has a misfire at idle but goes away once I accelerate. I bought the truck recently and the guy who had it before me installed an aftermarket cam and never was able to get it tuned. I got it tuned after I bought it but The tuner has recently moved across country so he is no help. Could the cam be causing this? Should I find someone to try and tune it for a better idle loop? TIA

I’m hopeful it is normal sound. It doesn’t sound like most lifter ticks I’ve heard, but the guy who tuned it is leaning towards a lifter

I purchased this truck about a month ago and it has this tick for awhile says the previous owner. He installed a new cam/lifters/springs about a year ago. Trying to determine if it’s a lifter or a new cam tick people have talked about? Thanks . Link below