URGENT URGENT!! PLUNGER CHANGE, NO OIL PRESSURE!!!

[LOVEMYRANGIE]

Have just changed oil plunger and spring in the Classic. VERY small amount of oil drained when plunger came out, but now I cannot get oil pressure back.

Can someonr please advise any tips as I need to get this back running in the next hour or so!!!

I have tried filling the plug right at the top/back near the gears, but still nothing!!

[rangieman]

Either pull the oil pump apart and fill with vasolin
Or remove your dizzy and find a old long screw driver cut the handle off and put in in a electric drill and engage the oil pump drive where the dizzy came out of
operate the drill to get oil pressure up;)

[LOVEMYRANGIE]

Either pull the oil pump apart and fill with vasolin
Or remove your dizzy and find a old long screw driver cut the handle off and put in in a electric drill and engage the oil pump drive where the dizzy came out of
operate the drill to get oil pressure up;)

Can it be done by pressurising the oil cooler lines at all?? Was contemplating a kind of 'force feed' to it then trying to start it...

[rangieman]

Can it be done by pressurising the oil cooler lines at all?? Was contemplating a kind of 'force feed' to it then trying to start it...
I do not have enough qual,s to answer that one:cool:

[mike 90 RR]

Either pull the oil pump apart and fill with vasolin
Or remove your dizzy and find a old long screw driver cut the handle off and put in in a electric drill and engage the oil pump drive where the dizzy came out of
operate the drill to get oil pressure up;)

Do as the above ..... DON'T risk shagging about with oil pressure

Do you need a hand???

[LOVEMYRANGIE]

Do as the above ..... DON'T risk shagging about with oil pressure

Do you need a hand???
May do. Dont have a pump gasket though. Drop on over if you want!

[PhilipA]

Are you sure the plunger is not jammed open?
Why did you replace it?
The plunger and tube get a wear pattern and a ridge can form on the tube. A quick and gentle hone may fix it.
It should not empty the oil pump when you take the plunger out.
Regards Philip A

[1103.9TDI]

Have heard these engines need the oil pump to be reprimed, as there is a chance they will not 'pick up' when re-started. Do not risk it if the gauge shows no pressure, happened to a local here.....needless his fully rebuilt engine is now on the scrap heap. Good luck.

[LOVEMYRANGIE]

Are you sure the plunger is not jammed open?
Why did you replace it?
The plunger and tube get a wear pattern and a ridge can form on the tube. A quick and gentle hone may fix it.
It should not empty the oil pump when you take the plunger out.
Regards Philip A

I took the pump cover off as I thought it may be well worthwhile checking the gears anyway seeing as they have never been changed.
The plunger showed signs of wear particularly at the end where it had some light grooves in it. Interesting thing is that when you look at the plunger installed in the cover from the inside face, you can actually see the spring thru a gap in the back. I am at work atm and havent got it here with me, but I will take a pic of it tonight and post it here.
By removing the retaining plug, it allows all the oil to drain out of the gears! You dont even need to take the plunger out!

Reason I took it out was due to a lower than normal oil pressure and it IS the original spring too. The spring has shrunk by a bot 4mm over the new one and physically has a lot less tension.

The surprising thing is that although this engine has done 240k from new and has not been touched, the oil pump and gears are absolutely immaculate! The only signs of wear on the pump cover is from the drive gear and is nothing more than light brushing marks on it!
Am getting a gasket today and will repack it with vaso tonight.

[rangieman]

I took the pump cover off as I thought it may be well worthwhile checking the gears anyway seeing as they have never been changed.
The plunger showed signs of wear particularly at the end where it had some light grooves in it. Interesting thing is that when you look at the plunger installed in the cover from the inside face, you can actually see the spring thru a gap in the back. I am at work atm and havent got it here with me, but I will take a pic of it tonight and post it here.
By removing the retaining plug, it allows all the oil to drain out of the gears! You dont even need to take the plunger out!

Reason I took it out was due to a lower than normal oil pressure and it IS the original spring too. The spring has shrunk by a bot 4mm over the new one and physically has a lot less tension.

The surprising thing is that although this engine has done 240k from new and has not been touched, the oil pump and gears are absolutely immaculate! The only signs of wear on the pump cover is from the drive gear and is nothing more than light brushing marks on it!
Am getting a gasket today and will repack it with vaso tonight.
Good move ;)

[LOVEMYRANGIE]

Pics of the oil pump cover. This is an original item!!
You can see where the pen tip is pointed that there is a gap to the spring area of the plunger. It isnt seated all the way as I found it needed a cleanout in the seat area, but when fully seated, this area is fully open to the spring. From a hydraulic point of view, this would be to allow the spring to operate on a differential pressure, not fully loaded on the plunger head. This will stop it from pulsing.
None the less, this is why the gears drain when the plug is taken out.

Thankyou to all for the advice!

https://www.aulro.com/afvb/images/imported/2008/10/123.jpg

https://www.aulro.com/afvb/images/imported/2008/10/124.jpg

[rangieman]

So do you have oil pressure again , did you just cram the pump full of vas or pull the dizzy trick;)
Hope it all worked out in the end:cool:

[LOVEMYRANGIE]

So do you have oil pressure again , did you just cram the pump full of vas or pull the dizzy trick;)
Hope it all worked out in the end:cool:

Did it with vaso. The missus looked at me VERY oddly when I walked out of the house and down to the shed with my manuals and a jar of Vaso in my hands! Think the comment was something like "so who do you think of then, me or that car...?" :o:eek:

Gave the gallery into the block a half tube of Nulon L90 assembly lube as well. Cranked it on the starter for about 15 seconds before the light went out and kept going until i got a reading on the guage. Cranked it up and all was well. Think the lifters liked a dose of the assembly lube though, it seems quieter and actually feels like it has a bit more power now.... go figure.......

[rangieman]

Did it with vaso. The missus looked at me VERY oddly when I walked out of the house and down to the shed with my manuals and a jar of Vaso in my hands! Think the comment was something like "so who do you think of then, me or that car...?" :o:eek:

Gave the gallery into the block a half tube of Nulon L90 assembly lube as well. Cranked it on the starter for about 15 seconds before the light went out and kept going until i got a reading on the guage. Cranked it up and all was well. Think the lifters liked a dose of the assembly lube though, it seems quieter and actually feels like it has a bit more power now.... go figure.......
Good to hear mate:D