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Old 02-03-2012, 06:33 PM
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do a spark plug check like I suggested to hauss in the other thread, look for abnormaly clean plugs, or at least a different color from the rest, it may be just one or two adjacent plugs.

also find someone who has a exhaust gas analyzer and ask him to connect the probe over the radiator filling neck (do not inmerse in water) just slip a piece of old radiator hose over the neck to form a sleeve and stick the probe in it, with the engine running, if the analyzer detects any of the exhaust gases coming out of the radiator then you'll know you're in trouble.
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