Hey,
I have a 1988 mercedes 300 and at low RPMs it seems to run really rough. Once I get going it runs fine. At Idle it runs around 750rpms but shakes alot. If I then hit the gas it will RPMs will drop to almost nothing and in some cases stall out. It will also do this when i switch from nuetral into drive or reverse. But like I said once I get going it runs fine. I have had 2 machanics look at it, one said it was the Valve guides adn the other said it was the fuel injector. I was just wondering if any other people had had this problem and any advice would be much apprecciated

thanks