I took off the fuel filter and fuel pump tray today to change the filter and fuel pump check valve. My filter i belive has been there since new 205k miles. I decided since i was already down tere to change the valve. I read that you can test them by trying to blow through them. THe new one Bosch one I can not blow through in either direction. I figured I should be able to blow one way but not the other. The old one i can blow one way easily, and if i blow hard the other a little leaks. No matter how hard I blow into the new one I can not get air though it before my lips start leaking. Is my new one broken? Should it be this hard? And should I just put the old one back on?

THanks

Scott
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1989 Volvo 240 DL 193k Miles

Hi Scott,

You might have read my account of pulling one in the junkyard I could blow through both ways. It has a pretty stiff spring I doubt you'd overcome that way. The old one would be worth taking apart ("careful with that hacksaw, Eugene") to see if the spring has rusted in two pieces. The new one is OK.

careful with that hacksaw, huh? i thought it was an ax. off i go, chuck.

Thanks Art.

I wil reassemble with the new one and disect the old one later when I can find the bits to my dremmle.

Scott
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1989 Volvo 240 DL 193k Miles