Not starting after un-seizing boost pin, please help

neilly said:

I am sure it will be OK, at the start of lockdown I got bored and did this to one of my pumps, Amazingly it still works.
View attachment 221843



Did you remove it from the vehicle?


Cheers

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fu ck you’re brave

Hi all, been out today and set the throttle shaft to just before 12 o clock if the front of the vehicle is 12, also took off the top cover again just to make sure the spring shaft was correct, I'm no mechanic and since the pump is fitted to the vehicle I can only presume it is.

When pushing the throttle lever towards the back of the pump the guide/boost pin does eject into the boost pin cylinder, I did notice that it only protruded approximately 5-6 mm out, not sure if that's enough.

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.

I have also noticed the full load screw only screws in so far, where it then gets very stiff and won't screw any further, with the full load screw screwed home with a few threads seen (this is with the washer, nut tight against the pump body and the collar placed next to the thread the collar fell off during 1st removal of the full load screw) i still get no fuel at the injectors.

Side Note.

Followed the PDF with regards to the throttle shaft placement (slot at 12:30 6:30, and this then lines up with the second line on the throttle lever) still no fuel at injectors.

I'm stumped, has anyone got a measurement available of how much of thread is visible from the pump body to the end of the full load screw? Including Locking Nut, washer and collar to the end of the screw. If I can get a ball park figure of the length of the full load screw that protrudes out of the pump body from a working 300tdi engine, atleast then that would be one less issue to sort out.

I have bought a 2nd hand FIP off FleaBay off a 200tdi, should be receiving end of the week.

Carl

Another question.
The lever in the top cover that moves the guide pin against the boost pin, looking at the above photo there is a cutout in the box section, does the guide pin leaver (inside the top cover) fit in this cutout in the inside of the box section.

Career 707 said:

Another question.
The lever in the top cover that moves the guide pin against the boost pin, looking at the above photo there is a cutout in the box section, does the guide pin leaver (inside the top cover) fit in this cutout in the inside of the box section.

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Sorry, do not understand what you are asking here.

If you are getting fuel out of the central bolt at the back of the pump , how long are you cranking the engine to see if fuel appears at the injectors?

Cheers

Career 707 said:

If I can get a ball park figure of the length of the full load screw that protrudes out of the pump body from a working 300tdi engine, atleast then that would be one less issue to sort out.

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from the top of the max fuel hex head to the back of the casting in the top cover the max fuel screw is approx 23.78 mm on my unmolested pump.

Cheers

neilly said:

Sorry, do not understand what you are asking here.

If you are getting fuel out of the central bolt at the back of the pump , how long are you cranking the engine to see if fuel appears at the injectors?

Cheers

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I'm cranking over for about 30 seconds ish

from the top of the max fuel hex head to the back of the casting in the top cover the max fuel screw is approx 23.78 mm on my unmolested pump.

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Thank you, it is appreciated

Regarding the question, I have included both photos, when fitted does the lever marked with the orange arrow engage into the gap marked with the light purple arrow.

Thank you[/QUOTE]

Career 707 said:

I'm cranking over for about 30 seconds ish



Thank you, it is appreciated

Regarding the question, I have included both photos, when fitted does the lever marked with the orange arrow engage into the gap marked with the light purple arrow.

Thank you

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[/QUOTE]

OK, I understand now, I would have to say no as that space if full of spring.
As seen in the pdf pictures.


Is this a picture of your actual pump?

When I fitted a second pump, it took a lot of cranking. Quite a few times until fuel appeared at the injectors, but that was an dry / empty pump.

Cheers

Neilly, the image you asked if was my pump it isn't my top cover, this is a screenshot of a similar pump of a 94 cummins I believe. A 6 cylinder but the pumps are bosch ve types it was just for illustration purposes.

While refitting Do you know if the cover is placed vertically on the pump body or does the top cover require a particular rotation to engage with pump body? I'm thinking maybe I'm not engaging the lever correctly?, I can't see it as the guide pin does eject about 5 to 6 mm if the throttle is pressed.

Career 707 said:

Neilly, the image you asked if was my pump it isn't my top cover, this is a screenshot of a similar pump of a 94 cummins I believe. A 6 cylinder but the pumps are bosch ve types it was just for illustration purposes.

While refitting Do you know if the cover is placed vertically on the pump body or does the top cover require a particular rotation to engage with pump body? I'm thinking maybe I'm not engaging the lever correctly?, I can't see it as the guidelines does eject if the throttle is pressed.

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OK that makes sense as the pump top cover looked wrong and has an additional spring on the one side of the cover and is bass ackward in places.

Does your pump have the lever on the side of the pump, it is connected via a spring covered rod the the throttle lever? if it does then these make it a pain to fit as you need to get the internal lever this is connected to under the internal box section you mentioned earlier. However if it does not have the extra lever then yes you should be able to basically replace in a straight fashion , but you do need to pull the throttle spindle through as you replace the top cover. Doing it on the engine is possible but it does make life difficult.


Cheers

@Career 707

The lever for the gov pin, is contacted by the lever at the back of the pump that is connected to the throttle spindle by the spring , see photo.



Cheers

If im correct you are referring to the manual fuel stop on on the side of the pump housing. Correct me if I'm wrong.

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I believe that because my Defender is the early 300tdi (it's a 1994 300tdi) it doesn't have an egr valve either ( a 200tdi injection pump looks exactly the same as mine), only external control cables it does have is the standard go faster cable (throttle cable) to throttle linkage and a choke cable which is piggy backed onto the throttle linkage. Other than that no other control cables exists.

The throttle shaft has been placed in it's bush in the top cover and has been turned CCW until the slide in above picture has no slack in it. I hope this makes sense never been any good at describing stuff .

The lever for the gov pin, is contacted by the lever at the back of the pump that is connected to the throttle spindle by the spring , see photo.

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That does make sense, and I presume that the gov pin lever goes on the same side as the blue arrow. So when the throttle is pressed the gov pin slides on this lever marked in blue on your photo.

Career 707 said:

I believe that because my Defender is the early 300tdi (it's a 1994 300tdi) it doesn't have an egr valve either ( a 200tdi injection pump looks exactly the same as mine), only external control cables it does have is the standard go faster cable (throttle cable) to throttle linkage and a choke cable which is piggy backed onto the throttle linkage. Other than that no other control cables exists.

The throttle shaft has been placed in it's bush in the top cover and has been turned CCW until the slide in above picture has no slack in it. I hope this makes sense never been any good at describing stuff .

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Doubt that is a choke cable, more likely a hand throttle for pto/charging use.

Lynall thank you, I've owned it for 10 years and always thought it was a hand choke cable, learn something new everyday.

Career 707 said:

I believe that because my Defender is the early 300tdi (it's a 1994 300tdi) it doesn't have an egr valve either ( a 200tdi injection pump looks exactly the same as mine), only external control cables it does have is the standard go faster cable (throttle cable) to throttle linkage and a choke cable which is piggy backed onto the throttle linkage. Other than that no other control cables exists.

Click to expand...

Are you referring to this spring and lever set up on the side of the pump?


Cheers

This in the photo above is the throttle linkage on my Injection Pump looking at this last image you uploaded. Mine looks like a stripped down pump




And this picture above is the one I've bought, this pump (photo 2) is identical to the one on my Defender, its a 200tdi pump on a 300tdi engine, I think these basic pumps were installed on the early 300tdi engines prior to land rover adding the EGR valve.

Career 707 said:

View attachment 222069
This in the photo above is the throttle linkage on my Injection Pump looking at this last image you uploaded. Mine looks like a stripped down pump



View attachment 222070
And this picture above is the one I've bought, this pump (photo 2) is identical to the one on my Defender, its a 200tdi pump on a 300tdi engine, I think these basic pumps were installed on the early 300tdi engines prior to land rover adding the EGR valve.

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Cannot see what the throttle linkage is doing the first photo.


The second photo shows a pump that looks like it has not been used for a long time. Do you know when it last ran?

Cheers

The second photo shows a pump that looks like it has not been used for a long time. Do you know when it last ran?

Cheers

Click to expand...

I don't know the seller has only stated that the pump is in good working order.

Hi all, been out today in-between down pours bloody weather does my head in, still no fuel to injectors turned my max flow screw from 15.1mm from pump body to 23.78mm and still no fuel to injectors.

I have also ensured that the fuel return banjo bolt (on the back of the pump) hole is not blocked by removing it and blowing in to it, it's not blocked, on replacement same issue. .

Both fuel lines on pump (back of pump and top front of pump) once backed off emit fuel on cranking engine.

I have booked A mobile mechanic to come out on Wednesday the 4th November to have a look.

Does one of the 4 pipes that connect to the back of the fuel pump emit fuel if you crack one of those connections?

Cheers