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What is the little black cap next to the plenum ->
Posted by michael p (more from michael p) on Tue, 28 May 2002 10:48:12
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along the left hand side (on the "fuel rail" I think its called, please feel free to correct my terminology), looks like a tire valve cap, but bigger. I located a scent of gas under the hood to be coming from this, a slow dribble, took it off and there was a release valve like on a tire, but bigger, it appeared worn, and gas came dribbling out. It broke (of course) when I tried to tighten it. A quick trip to Murrays Auto parts (kudos to them) found a replacement "vacuum line release valve cap" with an O-ring that the original didn't have, it fit like a charm, "hand tighten only" and no more leak.
BTW, my mileage instantly went up to 19.3 mpg when I put this on, .2 more than before the new plugs, but I was driving this weekend, not my wife. Still watching long term, but could this have been the cause of my lower mileage, maybe it came loose when I changed the rear plugs?
'95 900 SEv6 96,000miles
posted by 64.2.23...
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