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2009 C350 (wife), 1995 E320 (son), 1995 S320 (mine)
46 Posts
Discussion Starter · #1 ·
OK, getting a slight ruff idle at a stoplight and a little of a rough start when cold. I am suspecting LAMBDA adjustment but thought I would check vacuum first to eliminate it.

At the vacuum hose to the power breaks I get 26 Hg and then it slowly fluctuates between 25-27 after a minute. This is above (or below) the 22 Hg I should be getting.

Any suggestion on where or what to look for? Is it a leak or a blockage? Is it in fact OK and the LAMBDA is off and causing the fluctuation?

Any help is greatly appreciated.

Thanks in advance.

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