A fuel restriction in the line from the tank or the strainer. If the tank is full & you remove the fuel line from the primary filter, fuel should flow out, if not you have a blockage. If it does flow out, you may have a bad valves in the lift pump.try operating the primer pump, you should be able to hear the fuel flowing through the system, if not, the valves may be bad.

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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving