Not starting after un-seizing boost pin, please help

Career 707 · Oct 28, 2020

neilly, no injector union at pump end dry as a bone, I've let it crank over for a good few seconds, around 30 seconds it's a pain as I go out and a minute or 2 later it belts down, got 3 days of this by the looks.

neilly · Oct 28, 2020

Career 707 said:
Having fitted everything back together and bleeding the fuel system to the Fuel Injector pump (bleed bolt in the centre of the injector pipes on the back of the pump) still no fuel getting to the injector unions at engine block.

Career 707 said:
neilly, no injector union at pump end dry as a bone, I've let it crank over for a good few seconds, around 30 seconds it's a pain as I go out and a minute or 2 later it belts down, got 3 days of this by the looks.

But you say you have fuel at the centre bolt on the rear of the pump?

Cheers

neilly · Oct 28, 2020

Have you tried removing the stop solenoid plunger and seeing if fuel will appear at the injectors? be prepared to stall it if it does start.

Cheers

Career 707 · Oct 28, 2020

Neilly, yes fuel is at centre bolt at rear of pump.

As for solenoid and removing the plunger and spring, I have not done that but I will do that tomorrow see if I can get out in between the rain.

Even though the solenoid is clicking when energised within the pump and prior to the work being done I had no problems with fueling, can a solenoid still be knackered even though a click can be heard?

TIA

Career 707 · Nov 3, 2020

Well been out today, still waiting for a 24mm spanner to come through the post to remove the stop solenoid, had made a tool but that solenoid is well in there and it wouldn't bugde.

Question even though the stop solenoid is clicking when energised could it still be defective?

Also, while priming the lift pump lever until very limited resistance is felt then leaving for a few seconds the resistance is back, can anyone tell me why that is?, is that normal or could there be a leak in the pipework?

TIA

jamesmartin · Nov 3, 2020

clicking should mean its working
if the cam lever is pressing the lift pump diaphragm up there will be little resistance on the priming lever youd need to turn the engine over 90 degrees or so

Career 707 · Nov 3, 2020

Thank you, I'm asking about the lift pump as I had to remove the Injection Pump top cover to unseize the guide pin, after refitting I've now noticed that whilst priming the fuel system ( i am aware of the fact that the priming lever will only work in certain circumstances) after actuating the lever to prime the system and stopping (not turning the engine over) for a short period the resistance of the lever is the same as prior to priming.

I'm still not getting fuel to the injectors.

Flossie · Nov 3, 2020

I can't remember if there's a bit of rubber or something on the end of the solenoid 'pin'. That may be stuck in the fuel gallery even though the pin moves up.
I had to tw@t my solenoid with a chisel to get it moving before using a cut down spanner. No room to move, it's a pita.

Career 707 · Nov 3, 2020

Flossie, I can't remember if there's a bit of rubber or something on the end of the solenoid 'pin'. That may be stuck in the fuel gallery even though the pin moves up.
I had to tw@t my solenoid with a chisel to get it moving before using a cut down spanner. No room to move, it's a pita.

I've just checked the new one i have bought, and yes your right there is a rubber cap fitted to the plungers tip. I'm guessing this has fallen off and got stuck in the gallery and preventing fuel getting to the injectors.

Flossie · Nov 3, 2020

You're jammed up if it is.
I've never heard of it though just throwing things out there.

Career 707 · Nov 3, 2020

I'll update if this is indeed the case, to be honest in my opinion it can't be anything else, as the fuel gets to all parts of the fuel system while turning the engine over i.e. exits out of the filter bleed screw, inlet and return line feed to injector pump and bleed screw in centre of Fuel Injection Pump head (between Pump fuel injector outlet unions). Fuel does not exit through the pump distributor head to injectors.

Career 707 · Nov 4, 2020

Changed the stop solenoid for a new one, still no fuel to injectors so I'm assuming the Injection Pump is fubar.

Flossie · Nov 4, 2020

Bummer..
The cam belt is going round isn't it?

Career 707 · Nov 4, 2020

Flossie said:
Bummer..
The cam belt is going round isn't it?

Yeah the Cam belt is turning, I'm getting fuel to the fuel injection pump bleed screw while cranking the engine over on the key but not exiting into the injector pipework.

Flossie · Nov 4, 2020

Sounds like it's time to admit defeat unless @neilly has any more advice.
Whereabouts are you?
Dieselec in Shropshire sorted my leaky one for not much money. Diesel Bob is highly rated but pricey.

Career 707 · Nov 4, 2020

I'm in South East Wales, I'll have to have a chat with my local garage and get a quote, I have a spare pump here anyway see what the guy says either swap it out or fix this one.

neilly · Nov 4, 2020

Career 707 said:
I'm in South East Wales, I'll have to have a chat with my local garage and get a quote, I have a spare pump here anyway see what the guy says either swap it out or fix this one.

Only thing I can think that may be causing you an issue now is the PRV is not working as it should and needs stripping out to clean and then refit.

Other than that fit the new pump and see how it goes.

Was this working as it should before you decided to fit the new boost pin?

Cheers

Career 707 · Nov 4, 2020

PRV enlighten me?, don't know what that is.

Yes prior to me taking the top cover off it worked well with exception to the turbo which is what prompted me to attempt to unsieze the guide pin, I would estimate that the turbo was only working around 25 to 30% as when on even slight hills it barely got up them in 5th, steeper hills required 3rd and 2nd gear, it was a pita because I live on a mountain and on the way home 2nd gear most of the way up.

Career 707 · Nov 4, 2020

Pressure Relief Valve got it. I'll have a look at that tomorrow, what symptoms would a faulty PRV cause?,

Career 707 · Nov 9, 2020

Hi all, I'm looking for recommendations on overhauling a 300tdi Bosch VE pump (the 2nd hand pump i purchased), i have found 2, dieselec of Bridgnorth and diesel Bob of Ribchester.

Dieselbob is £295 and allows pumps to be posted, this post ability will be my only option

Dieselec very limited information online. anyone used these services for pump overhauling Bosch VE pumps specifically and an estimate of price work undertaken and will pump be ready to bolt straight back on to the truck?

Basically looking for recommendations from people who have used these services and their experiences with these companies before commiting.
TIA

Not starting after un-seizing boost pin, please help

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