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05-09 Equinox Maintenance

RPM's surging at idle after head gasket job


This is a discussion on RPM's surging at idle after head gasket job within the 05-09 Equinox Maintenance forums, part of the Chevy Equinox General Discussion category!
05 Equinox. Did a head gasket job and everything went smoothly. Started it up when finished and it ran fine. ...





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Old 05-28-2014, 08:27 PM   #1 (permalink)
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Default RPM's surging at idle after head gasket job

05 Equinox. Did a head gasket job and everything went smoothly. Started it up when finished and it ran fine. After reaching operating temperature, the RPM's will start to surge until it stalls. It starts right back up and will happen again a few minutes later. No codes present and it's smoking out of exhaust still, only not as bad and it doesn't smell like coolant. Smells more like it's running rich. Also seems to be a slight backfire when I rev the engine. Any help is greatly appreciated, thanks.
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Old 07-10-2014, 08:13 PM   #2 (permalink)
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What color is the smoke?

White = Head Gasket leak
Black = Rich Mixture
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Old 07-27-2014, 09:25 PM   #3 (permalink)
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To add;

Blue = Burning oil.
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Old 07-29-2014, 08:53 PM   #4 (permalink)
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Make sure to have a leak down and compression test to have an idea of your engines health.
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Old 08-04-2014, 12:20 PM   #5 (permalink)
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Still having your problem?

Compression check should always be performed pre and post head gasket work. Find out if your introducing an issue or bringing to light a previous minor one....
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Old 11-30-2015, 02:30 AM   #6 (permalink)
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Did u ever resolve the problem? I just did a 2005's head gaskets and have the identical problem? Please advise
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