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Old 08-09-2002, 08:31 AM
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Post mazda, no gas feeding engine

my neighbor was asking me last night why his late 80s mazda p.u. wouldn't start after he put a new fuel pump on it, it had sat for a long time. he has: pulled the gas tank, blew air through the lines, they are clear, replaced the filter, put the tank back in and forced fuel through with compressed air, it started and ran for 10 minutes. I asked him if he put the pump in correctly, arm down to ride under the cam. he didn't know. does this pump need to be loaded like most pumps? also asked me "what is the white thing on the tank, 3 screws hold it on, it has a spring? anyone familiar with these vehicles? thanks, dan

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Old 08-10-2002, 01:00 AM
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The white thing is the rollover check valve, if the vehicle rolls over it shuts off the fuel. There might be a pickup problem in the tank, the pump might be sucking air or he might have blown off the pickup tube with the compressed air.

Rule #1) Never use compressed air to check fuel systems and heater cores.
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Old 08-10-2002, 02:12 AM
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Could have done what I did on my '86 Mazda P/U, and saved some money also!! Mounted a external electic pump 7 years ago and it is still going strong!!
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