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#1
03-23-2004, 12:17 PM
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DIY question: W126 fuel pressure regulator
Hello Folks:
Finally tracked down the source of a "gas fume" smell in the cabin of my '89 560SEL: apparently the diaphragm inside the fuel pressure regulator has failed, causing gas to travel down the line (the one that looks like a vacuum line but isn't, just an atmospheric vent) into the breather hose that connects the air cleaner to the top of the valve cover. I've looked through posts here and it seems to be a fairly straightforward parts swap (i've even got some golf tees handy!), but I wanted to know, since this is not covered in my CD-ROM shop manual (at least I can't find it!) if there are any tips or tricks to this before I get under the hood. Any advice, experience, or stories will be most appreciated! Thank you. OneTwoSix
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OneTwoSix "A solid door 'thunk' is worth a thousand electronic gadgets." Current: 1989 560SEL, 135k. Past: '77 300D, '78 280SE, '81 300D, '86 190E. Last edited by OneTwoSix; 03-23-2004 at 12:56 PM. 
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