Fuel check valve possible issue

[John Schanzenbach]

I’m seeing 2 recent issues that I think may be related.

1. When I recently changed by engine fuel filter, fuel continued to drip out of the housing when the filter was removed.
2. The engine has started to crank a long time (30-60 sec) before starting –   like it was having to build up fuel pressure.  This only happens on the first start of the day and I keep the oil pan heaters on all the time.  I also have dual racor filters and change them regularly when the vacuum goes up. 

Could this be a bad or dirty check valve and if so, where is the check valve located?  Is there more than 1 check valve.

Thanks for your help 

 

Topic

[John Schanzenbach]

Yes.  This morning with cold engines started squeaking after 5-10 pumps.  Thx for pic, any tips or videos on how to change it and prime the system?  Many thanks. 

[Rob Schepis]

When you pump the lift pump hand primer do you get pressure and the squeak noise?  

SMX Bosch P7100 Return Check Valve

Cummins Bosch P7100 Check Valve & Return Line Manifold

[Author]

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