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Old 04-13-2009, 08:28 PM   #1
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Default Bosch 044 fuel pump
Do the Bosch 044 fuel pumps have a internal check valve? I just installed one in the fuel tank of my truck. Runs just fine, but will not hold prime. Extended crank time for just a few seconds. Has anyone installed a external check valve? Thanks
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Old 04-13-2009, 10:42 PM   #2
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I thought they did but now that you mention it my pumps take a bit to build pressure also.
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Old 11-01-2009, 06:45 PM   #3
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No, the check valve came with the pump though. It is external.
heres the part you need
http://www.jayracing.com/index.php?m...roducts_id=227
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Old 11-02-2009, 09:57 AM   #4
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Originally Posted by fossil View Post
Do the Bosch 044 fuel pumps have a internal check valve? I just installed one in the fuel tank of my truck. Runs just fine, but will not hold prime. Extended crank time for just a few seconds. Has anyone installed a external check valve? Thanks
No. The check valve came with the pump I bought though. It is external.
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Old 11-04-2009, 02:42 AM   #5
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This is the external check valve mounted on a Bosch 040 intank pump.



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