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MTDI Bosch VE won't shut off - Printable Version

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+--- Thread: MTDI Bosch VE won't shut off (/showthread.php?tid=7294)

MTDI Bosch VE won't shut off - Fishman - 07-08-2016

Hi,

I've build a mechanical Bosch VE pump for a 2.5 R5 TDI. Basepump is a Rover Mechanical TDI pump. Engine runs great, but when i want to shut her off, she keeps running irregular. Pump is tested, nozzels are tested en stopselenoid is tested. All ok. Anybody a idea what's wrong?

RE: MTDI Bosch VE won't shut off - MFSuper90 - 07-08-2016

the pump should shut off when 12v is taken away from the solenoid. Do you have voltage at the solenoid when it's shutoff?

RE: MTDI Bosch VE won't shut off - Fishman - 07-09-2016

No voltage at de cut off valve. I can disconnect the batterie an she keeps running.

RE: MTDI Bosch VE won't shut off - MFSuper90 - 07-10-2016

Hmmm, that is interesting. Are all the parts and pieces in the shutoff solenoid?

RE: MTDI Bosch VE won't shut off - Fishman - 07-10-2016

Yess. Even fitted an other one.

RE: MTDI Bosch VE won't shut off - MFSuper90 - 07-10-2016

Any picture of the pump? There are several different styles of VE pumps,
Some I have seen have mechanical stops

RE: MTDI Bosch VE won't shut off - Petar - 07-10-2016

[Image: clip_image002_thumb.jpg?imgmax=800]
From what i can see your problem is either the stop solenoid, or there is another hole that the fuel goes through, or the seat of the valve leaks. Maybe you have the push type solenoid ? Have you tried applying power to shut it down ?

RE: MTDI Bosch VE won't shut off - Evgeniy1987 - 07-12-2016

The pump makes too high pressure. The distance between the pumping element piston and the "end screw" is too little. increase the distance by installing a thinner shim between the camplate and piston..

That is a very common cause of such problem.

RE: MTDI Bosch VE won't shut off - Fishman - 07-16-2016

(07-12-2016, 07:54 AM)Evgeniy1987 The pump makes too high pressure. The distance between the pumping element piston and the "end screw" is too little. increase the distance by installing a thinner shim between the camplate and piston..

That is a very common cause of such problem.

I had the pressure tested and it was way to low. They shimmed it to a higher pressure. Before i didn't get any black diesel smoke. Now i do. I can shut it off with the mechanical lever.

https://youtu.be/LFRPp4YUtiM

[Image: 20160302_151332_zpsyg2nzkyc.jpg]

RE: MTDI Bosch VE won't shut off - starynovy - 07-18-2016

Wow, not common to see mechanical pump with injection advance selenoid.