Thread: Sludge issues
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Old 11-05-2010, 08:21 AM
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The only way to remove the sludge is to tear down the engine and clean it. Chemical cleaners that claim to remove sludge could cause it to accumulate in the oil pan and clog the pickup. A rough idle can be caused by several things. Start with cleaning out the throttle body and IAC motor/passages. If the engine hasn't had new plugs in the last 30k miles, throw in a fresh set. A leakdown test requires a leakdown tester and air supply from a compressor.
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