Series 3 Oil Pressure Light Spookyness

Bobsticle

De Villes Advocaat

Posts

27,632

Location

Manchester

• Jul 2, 2018

• #21

After full diagnostic inspection before attempting pump replacement (bout 10 minutes) now the new pump arrived this morning, I have narrowed the issue right down to a slight short behind the speedo on the warning light. A simple wiggle twixed finger and thumb sorted the issue.

Anyone need a new pump

 

olsver

Member

Posts

63

• Jul 3, 2018

• #22

They say it is never the oil pump @Bobsticle but i'm really hoping it is the problem in my case. Mine is in the post and i'm out of other options.

I had a look at the quill gear. Everything looks nice and tight and oily. I'm going to take apart the pump and see if the pressure valve is the problem. As you know, i'm getting intermittent pressure. Sometimes full pressure and sometimes no pressure. The pressure gauge was pricy (£100) but really worth it for a clear sight of the issue.

If there are any other new ideas i'd love to hear them.

 

T

Tall Ratbag

Active Member

Posts

167

Location

Midlands

• Jul 3, 2018

• #23

That's not the shaft which drives the oil pump, it's the quill shaft which drives the injector pump. There's another one between the skew gear you can see in the engine block and the pump in the sump.

 

C

Colthebrummie

Well-Known Member

Posts

9,870

Location

Thatcham

• Jul 3, 2018

• #24

Tall Ratbag said:

That's not the shaft which drives the oil pump, it's the quill shaft which drives the injector pump. There's another one between the skew gear you can see in the engine block and the pump in the sump.

Click to expand...

Doe!!

Col

 

olsver

Member

Posts

63

• Jul 3, 2018

• #25

I've stripped the pump and can't see anything obviously wrong.

Thanks for pointing out my mistake. I have a shot with that jobby out the way. I guess it is the lower half of this gear that drives the pump. Can anyone spot anything wrong with it? I realise it isn't the best photo.

 

olsver

Member

Posts

63

• Jul 6, 2018

• #26

It is now fixed. It seems to have been an issue with the pump. Either the pump wasn't getting a seal where it was mounted to the engine case or there was grit in the bore of the pressure release valve holding it open.

Thank you for all your help. You guys got me there.