Wont accelerate passed 70-75 mph

1992 MERCEDES BENZ 190E
258,243 MILES
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THE MUFFLER MAN
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and if I put it to the floor it starts to bog-out. Also, my dist.rotor sits passed #1 cyl. halfway to the next..

Compression good, new fuel filter, plugs , cap n rotor, fuel press. good. I also adj.my air/fuel mixture and now it idles high. Start-ups fine idles great just too high and no misfires. PLEASE HELP THK YOU.
Feb 17, 2012 at 7:08 AM
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RASMATAZ
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You probably have to disconnect something before you adjust the idle speed-the idle speed should be controlled by the computer-also look for a vacuum leak
Feb 17, 2012 at 8:57 AM
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THE MUFFLER MAN
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Now it won't accelerate passed 35-45 mph, it also has hard starting when it's cold and I checked my manifold vaccum pressure and it fluctuates at idle and during acceleration,(vibrates).
May 5, 2012 at 9:38 AM
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MASSIMO
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YOU PROBABILITY HAVE A CLOGGED CAT Y SEE THIS BEFORE ALSO CHECK FUEL PRESSURE AND MAKE SURE THAT THE RETURN LINE IS FREE GOOD LUCK AND ALSO IF IS THE ONE WITH TWO FUEL PUMP MAKE SURE ARE BOTH RUNNING
May 10, 2012 at 2:45 AM