1999 Chevy S10 Blazer air/smog pump hose burned


Old 09-12-07, 12:58 PM
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1999 Chevy S10 Blazer air/smog pump hose burned

My Blazer has a pump under my radiator and can't tell if it's working. Been told it's an air/smog pump. The tee fitting melted and so did the 90 degree rubber hose below the alternator which goes into a check value. How can I check the pump?
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Old 09-15-07, 12:17 PM
Join Date: Sep 2007
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ok check valves on the air tubes are bad blowing exhaust back into ur hoses also up north here was very common for water in the air pump to freeze
if u take the hoses off at the exhaust manifold airtubes and start the truck u will hear it and feel it leaking exhausht past the check valves
Old 09-16-07, 12:31 PM
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Oh yeah, we see alot of these come in with water in them. Do you recall if the service bulletin has been performed on your truck for the secondary air injection system?
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