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Old 08-15-2001, 06:46 PM
stephenson stephenson is offline
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Join Date: Dec 2000
Location: Fairfax County, Virginia
Posts: 856

I recently replaced the delivery valve o rings on my 91 350SDL.

I swear there is increased clatter - it also seems to smoke more (whitish/blue) and rougher idle. It runs absolutely superbly at speed and after a moment or two - still noisier at idle, I think.

Any ideas?

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