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03-31-2015, 09:49 PM | #1 | |
AF Newbie
Join Date: Mar 2015
Location: Tucson, Arizona
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Help!! new here , vapor lock!
Help! my 93 chevy astro van vapor locks when driven a long way in the heat! I know it is for certain vapor lock, when it dies , i pull the gas cap, and there is so much pressure it nearly shoots the gas cap off. after the pressure goes down in about 5 min, it starts and runs fine. Right b4 it vapor locks , the fuel pump makes a whining sound. What is the cause of this, and what can i do to prevent the vapor lock?
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04-17-2015, 08:07 PM | #2 | |
Registered Offender
Join Date: Mar 2006
Location: Rural
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Re: Help!! new here , vapor lock!
Check the EVAP stystem. There is a tank pressure control valve in the EVAP system to limit pressure and vacuum. Restore the system to proper operation and the problem should be solved.
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