I'd borrow a cooling system pressure tester and check for leaks-the white smoke could be a coolant leak into a cylinder-the rough idle may also be a symptom of the same thing-a compression test(with a diesel compression tester)might not be a bad idea either.
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1982 300DT 190K (Diesel Purge + synthetic oil=smoothness at last!!!)
2004 Ford E-350 6.0 L PSD 227K
2006 Dodge Ram 3500 SRW HO Cummins 4X4 48RE 42K (brute force tow vehicle )
2005 Scion xB wife's rolling pop can
1993 GMC Sierra C3500 6.2 142K
Last edited by bullwinkle; 01-12-2005 at 08:00 PM.
Reason: didnt see valve adj.
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