Bad injection pump

Dpas1973 · Jun 25, 2020

Ok so I purchased a used injection pump for my 2.5na I used the lock up tool so I didn’t have to take front of motor apart. I set the pump bled the filter and the little screw on top of pump crack it and nothing to the injectors. I looked in the inspection plate and the pump pulley is turning when I crank but 0 fuel to the injectors. I have 10 gallons of fuel in my driveway from bleeding it over and over. Safe to say I got a bad used pump?

Huddy84 · Jun 25, 2020

Sounds like it. When I refurbished mine I never removed any screws from the injection pump, I just pumped fuel through till it came out the top of the injectors return fitting and it fired up fine. Either I was lucky or yours has a problem.

Dpas1973 · Jun 25, 2020

All my return fittings have fuel just no fuel to the injectors from the back of pump

ifloochies · Jun 26, 2020

Verified if the fuel stop isn't stuck in the closed position? Fuel will flow through the pump body to return as long as it's been pumped in, doesn't necessarily mean some of it is getting into the head of the pump to be pushed out to the injectors.

Dpas1973 · Jun 26, 2020

ifloochies said:
Verified if the fuel stop isn't stuck in the closed position? Fuel will flow through the pump body to return as long as it's been pumped in, doesn't necessarily mean some of it is getting into the head of the pump to be pushed out to the injectors.

How would I check if it’s stuck in the closed position?

ifloochies · Jun 26, 2020

If the injection pump for the 2.5NA is anything like the one on the 200Tdi, you should have an electric solenoid sitting on top of the pump head (the cast iron part the injection lines go out of).
When you remove that solenoid, there's a spring loaded plunger sitting underneath.
Remove that plunger with the spring, replace the solenoid and start up the engine.
If it runs, you have a duff solenoid and you should be back in business with a replacement.

Dpas1973 · Jun 26, 2020

ifloochies said:
If the injection pump for the 2.5NA is anything like the one on the 200Tdi, you should have an electric solenoid sitting on top of the pump head (the cast iron part the injection lines go out of).
When you remove that solenoid, there's a spring loaded plunger sitting underneath.
Remove that plunger with the spring, replace the solenoid and start up the engine.
If it runs, you have a duff solenoid and you should be back in business with a replacement.

Did that already nothing.

Bad injection pump

Dpas1973

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Huddy84

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Dpas1973

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ifloochies

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Dpas1973

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ifloochies

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Dpas1973

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