fuel psi drops at IP when LP stops
#1
fuel psi drops at IP when LP stops
01 2nd gen cummins 5.9 24v trubo when I bump the start to make the LP(external)start psi goes to 20 when the pump stops the psi drop to 0.I'm checkingthe psi at supply line on the IP.The truck starts hard but seems to run ok do I have a bad check valve somewhere and where?This is my first diesel truck.Thanks for any help
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