Tech Topics

The New England M.G. ‘T’ Register has a long history of providing its members with advice and technical expertise on the restoration and maintenance of our special cars. We present some of our favorite technical articles and tips here for members and visitors alike.


Emergency Fuel Pump

Would you like peace of mind, free from anxiety, when you take your M.G. touring?

Sure, we all carry a spare SU fuel pump but even the after market fuel pumps can fail at the most inopportune time and place.
Who wants to change or work on a faulty fuel pump on a busy highway in the blazing sun, while your significant other is uneasy, standing there waving eighteen wheelers around you and your precious T-Series M.G. The solution is to just insert the rubber stopper end of this trusty $12.00 device into the fuel inlet of your gas tank and now you have two pumps working for you. Away you go, no delays, and no danger making roadside repairs.

Materials required: rubber stopper with a hole in the center. Check the yellow pages for laboratory equipment and supplies. You will want a #9 stopper as it is the right size and comes with a small hole in the center. Cost is under $2.00. Next, pick up a blood pressure bulb-pump at your local pharmacy. It comes with a one-way valve inside check out a Marshall #21-125, and it cost $7.95. A piece of 1/4” O.D. copper tubing about 1-1/4” long will fit snugly into the back of the stopper. Then add about a 7’ length of drip irrigation 1/4” tubing. With the copper tubing pushed firmly inside the rubber stopper, heat the 1/4” tubing with hot water or a hair dryer and force it over the copper tubing. The blood pressure pump will fit perfectly over the other end of the 7’ tube.

To test this simple device, disconnect the hot lead wire to your fuel pump and give it a try. A couple of pumps every 10 to15 minutes and you can drive forever. If your tank is half full, pump less often. It it’s full, pump more often. You only want 2-1/2 to 3 pounds pressure. More could cause flooding or the carbs to overflow. This is a safe and easy solution to pesky fuel pump problems and allows you to drive indefinitely with this device in place. No, this is not a new idea... many prewar M.G.’s worked on the very same principle.
by Stuart Locke #9486




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Disclaimer: All Tech Tips presented here are copyright of The New England M.G. ‘T’ Register. Be advised that every effort was made to verify the validity of each tip. But as in any free advice, it’s up to the user to judge the usefulness of each tip presented here.



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