LUCAS ADVANCE VALUE

berlingo bob · Unread post by **berlingo bob** » 01 Jun 2010, 17:43

Hi all.
On lucas fuel pumps what is the Advance value engraved on the injection pump on a little yellow tab.
As I have swopped a pump and the figures are different.
IE. 2.72 to a 2.63 Does anyone know does it matter.

Unread post by **CitroJim** » 02 Jun 2010, 07:53

Yes, that's the static advance value specific to that pump and it should be set up.

It's not a simple job as you need a Dial Gauge (DTI), a reliable and accurate method of determining TDC and a special setting rod for the pump.

If the engine runs fine, I'd be tempted to leave it for now...

I have a picture somewhere of me doing the job on a 205.

spider · Unread post by **spider** » 02 Jun 2010, 10:50

As Jim has said, although not 'that' difficult you do need some proper kit to get it right. The numbers are specific to that actual pump. Sometimes its engraved on it too so it can't be lost.

I could get you mine (XUD7TE) but that may not be anything like you need.

From memory getting accurate TDC was easier with the earlier engines as these had a bolt plug (!) in the head next to an injector so you could use your DTI to be sure you were 100% at tdc.

I 'think' the Haynes book (the generic XUD engine book) shows the procedure.