Doug_B_928

It looks like I might need to buy some new intake lifters. Does anyone know from where they can purchased (aside from the dealer)? I'm not seeing them on the usual websites (Suncoast, Pelican, ECS, Autopartsway).

19psi

Just curious, what are the symptoms? I've never heard of lifters going bad on a Cayenne.

Doug_B_928

Primarily a rough idle with a trouble code for the 'variable valve lifter'. I replaced the valve lifter solenoid, which is usually the source of the problem (see my write-up on the procedure for that in this forum). Porsche is wanting to change all of the injectors, saying that the injectors could be causing it (unlikely, but need to try it). There is a thread on Renntech where the OP had the lifters changed and it solved his problem (though the symptoms are not the same as mine). In my case I'm thinking one (or more) of the lifters is stuck in the high lift position, which would explain why it runs great over 1500 rpm but idles rough (I checked other suspects like vacuum leaks etc. to no avail). For now I'm keeping my fingers crossed that new injectors solves the problem, but would like to know the options for vendors to get some new ones if need be.

PelicanParts.com

Hello Doug - do you have the part numbers? If not, can you shoot me a PM with your vin? I can have one of our parts specialist shoot you a quote/info.

Doug_B_928

Thanks very much! PM sent.