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Old 05-12-2022, 03:05 PM   #5
Rick Norwood
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Re: 88 Blazer 4.3 idle issue after head gasket replacement

Check your Intake Manifold Gaskets while at Idle by spraying WD-40 or Carburetor Cleaner around the Gaskets, and anywhere else where a leak might be found. If you have a leak, you should hear the engine Rev a little when sprayed.
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