MG Car Repair SU Electric Fuel Pump electric fuel pump banjo bolt

18 мая 2014 | Author: | Комментарии к записи MG Car Repair SU Electric Fuel Pump electric fuel pump banjo bolt отключены
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MG Car Repair / SU Electric Fuel


QUESTION: Barrie, I a 1953 MGTD. It wouldn’t and because I didn’t hear the pump tick I assumed it was I took the filter out of the pump and ran fine emory paper points, took line at carb (couldn’t really if it was pumping but gas came out). I realized the choke was stuck so I that (you had previously me instructions and both carbs stuck). After doing things, I pulled out the choke and the car but after running a couple of it cut off.

I think it may have cut off it had used all the gas in the carb. Now it won’t The fuel pump is ticking now so I it is working. Any thoughts on what I try. Thanks, Sandy

SU H type filter

ANSWER: Hi When you turn the ignition key to the ON — before you hit the starter you should be able to hear the tick until it has filled the two float chambers. The pump eventually slow down and

I always wait until the stops ticking before I the starter.

If the pump will not ticking, then you have a Either the pump is not pumping, or you are out of or one of the float chambers is flooding.

Please let me know exactly is happening when you try to start the

Also, there is a banjo where the fuel line into the float chamber, and if you the banjo you will find fuel filter. That may cleaning as well. I attach a extract from the owner’s for the TF, which is very similar to the TD.


As for your original what is happening when you try to the car? I too would wait the pump stopped before to start. However the pump a steady ticking but more (fast,slow,stop,start,etc.). But I would still until it stopped.

When I the started the motor turns like normal but nothing I don’t smell any gas like it may be

I cleaned the 2 filters going floats. Little dirty but not blocked. I thought more gas have come out of the line I did that so I disconnected fuel going to first carb and key on. No ticky. Then I took off pump terminal and touched it to the of pump and it sparked.

Then bakelite cover off and touched to terminal and it ticked but stopped. I to clean the points again and Sometimes it would tick but it wouldn’t.

Those hints in the workshop manual. Does sound like I need a Or do you another suggestion? Thanks,

ANSWER: Hi Sandy.

It sounds your fuel pump an overhaul.

I would remove the from the car, remove the from the pump, and then the points with an oil stone.

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If you clean them or they are worn out, then you a new set of points. A set of points for an SU pump costs about $25, an exchange pump costs $160.

If you need detailed just ask.

QUESTION: you think the pump is just too old (I ever remember changing— so 30 years old) I am going to try to the points. Please send me How will I know if they are worn out? Thanks,


Hi Sandy.

Try removing the flexible points from the and inspect them carefully. is an eBay ad for some points, so you can see they look like:

The points are on the right of the photo. are held in place by a single screw. It should be possible to and polish the old points, but eventually wear out and need replacing.

The TD had points, whereas these ones are double points an MGB. They are an excellent for your pump and they fit straight on.

Let me know how you get on. If you are unsure, send me a of your points.


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