2007 Chevrolet Impala Repair Question
Mileage: 156,000 miles.
Valve train question
This started after doing a lower intake gasket.
Ps there's no coolant that goes through the intake manifolds
Any testing tips would be great instead of saying go to a mechanic... I'm here cause I would Love to fix it on my own over paying a 100 dollar diagnosis (which I've done 2 times to hear them say "we don't know!") its not worth it...
Asked by pos07impalaAnswer
Yea it wasn't too difficult, I had to fix a crossover leak and I went ahead to replace the manifold gasket, just for the sake of been in that far. The car took a couple tries to start then it started up and was making noise, I think it was the lifters but I'm not sure. Right now it just seems like I have some excessive clearances in the valve train. I checked pushrods and only one had some stress marks and it was very slightly bent, could only fit a post it note under it on a level surface
i see this is a repeat visit. http://www.2carpros.com/questions/2007-chevrolet-impala-valve-clatter-hesitation-low-power-bad-mpg
Yep. And do you have any insight?
not at this time. will keep in mind and see what pops.
Alright. Basically I was leaning towards a running compression test, a cylinder Leakdown, or get a dial indicator and measure cam lobe lift and compare it to stock height. Sound like I'm on the right track?
sure, doing anything positive increases the chances of finding the issue.