K-jet has no access thru air cleaner, the KE does, but I know what you're talking about except that the screw plug is seized in the housing and the slot is chamfered in the CW direction. I'm going to try to drill and re-tap the access port. I just unplugged the PCV circuit and cleaned the idle air distributor and I've already seen a marked improvement in acceleration and idle. I'll see how dead cold idle is tomorrow morning..

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RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

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