-
Hey Guest!
British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!**Upgrade Now**
(PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
Fuel Pump Problems
- Thread starter AngliaGT
- Start date
Share this page
dklawson
Yoda
Offline
If it's the original SU electric pump there are several things to try. They typically stop ticking once the float bowl is full. Since yours only ticks once you could have a blockage in the fuel line or the float valves may be stuck closed.
As a test, disconnect the fuel line at the carbs, aim it into a catch can and have an assistant turn the key to the run position. If fuel flows into the can and the pump ticks along normally, check the float valves. If you still only get one tick and no fuel flow, disconnect the fuel line from the pump's discharge port and repeat the test. (Be cautious when disconnecting the line as it (or the pump) may start pouring fuel by gravity). If you get fuel flow now, look for blockage in the fuel line to the front. If you do not get fuel flow and only get one tick, look for problems with the pump (burnt pump points, miss-adjusted toggle mechanism, etc).
As a test, disconnect the fuel line at the carbs, aim it into a catch can and have an assistant turn the key to the run position. If fuel flows into the can and the pump ticks along normally, check the float valves. If you still only get one tick and no fuel flow, disconnect the fuel line from the pump's discharge port and repeat the test. (Be cautious when disconnecting the line as it (or the pump) may start pouring fuel by gravity). If you get fuel flow now, look for blockage in the fuel line to the front. If you do not get fuel flow and only get one tick, look for problems with the pump (burnt pump points, miss-adjusted toggle mechanism, etc).