Hi All,

After years of tyre kicking I have finally bough my dream 1962 MK II 3.4.

However I was bought back down to earth quickly when she broken down. Who knew a classic Jaguar would break down… don’t laugh!

Anyway I’m looking for a bit of advice. It appears to be the fuel pump cutting out. I have talked to someone and they have told me rather that replace it. I should just fit a second smaller pump further along the fuel line.

Would people recommend this and if so what type of pump and when would be best to fit it?

Thanks

Greg

 

The old original Lucas fuel pump is fine when it operates,But the electro/mechanical part does suffer with age and just light your points need to be cleaned/replaced from time to time. I have a 1964 Daimler V8 and that gave me much grief after I put it back on the road after a long lay-up of over 5 years. Eventually, I changed the pump to a modern all electric by Mitsuba (?). That cured the problem. Then wishing to go back to original I stripped the old pump and replaced the contact breaker set up with new replacement parts. All is still OK. But I do carry tools to get at the pump and could change it if absolutely - AND IT HAPPENS IN DAYLIGHT.

 

SNG Barret sell an SU pump that is exactly the same as the original, but without the points (solid state) , they do negative or positive earth, best of both worlds. Cost is about GBP 60.00

 

If your MK is original, adjust or replace the points in the fuel pump. If you get a kit it has new points and valves in it. Why put a second pump, you can replace the original with a solid state pump without hassle and will last longer.

 

I am refurbishing a 1961 Mk2
I purchased a new "electronic" SU fuel pump and it came with a notice in the box concerning the importance of correct polarity of earthing which unfortunately I have lost.
My car is "positive to earth" and I seem to remember a warning note in the box concerning damage done if polarity of installation is wrong.
The new pump has a Black sealing tape around it signifying "negative to earth".

My question is:

Is it just a matter of ensuring that the wiring is reversed?
Or should I return it to the supplier and ask for an exchange for a red sealing taped pump that is "positive to earth"?

 

Hi, Greg.
I must say I recognize your story :-)
I bought my 1964 Mk2 3.4 last summer. On my first highway trip, hell broke loose as 3 things occurred almost simultaneously;
1) The horn got stuck, making a helluva noize on a nice and hot Sunday.
2) The steering wheel became loose from trying fix the short circuit.
3) When finally it was time to drive home, the old SU fuel pump got stuck,
though it worked after some serious beating with a hammer.
The cheapest and easiest fix was a new fuel pump, got this SU AZX-1319EN from Jagspares Int. for £77. It took an hour to fit including a new fuel filter placed before the pump inlet. The original, square one is still in my closet for later refurbishing..