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1986 SL560
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Discussion Starter #1
Dear All:

I have a rough idle problem with my ’86 SL560 and after performing a standard tune-up (new plugs, ignition wires, dist. cap, and rotor) which was of no help, it seems the next thing to investigate is a vacuum leak.

Can anyone guide me to the relevant file on the MB Service Manual CD-ROM, as I can't seem to locate a vacuum diagnostics section? Otherwise (and assume I know little about the vacuum system but do own a Mityvac ;)), can anyone guide me through the logical steps to test and hopefully track down any vacuum leaks?

Any help is much appreciated.

Ryan Potts

'86 SL560
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