View Full Version : Fuel pump question

04-25-2011, 08:24 AM
so, went for a drive with Ms Triss and about 5 times I accelerated and she bogged down and then recovered. It seems to me that this is a fuel delivery problem - though I will be checking the plugs - anyway, it has me thinking about breaking down and getting an electric pump. I know we have discussed this over and over again but, bear with me.

If I go for an electric pump, can I keep the mechanical pump as a reserve?

This link implies I can keep them inline:
electric pump (https://www.princessauto.com/all-seasons/farm/transfer-pumps/12vdc/8144354-12v-in-line-fuel-pump)

or, could I disconnect it and run it dry in case I need it.


04-25-2011, 09:07 AM
If it recovers after it bogs, I wouldn't suspect the fuel pump. Check the oil in the dashpots.

I wouldn't run the mechanical pump dry. If you put them in series, I would run on the mechanical and have the electric on a switch as a backup.

Marv J

04-25-2011, 09:13 AM
I had this same issue last summer on my 67 Sprite. It ended up being a fouled plug and low oil in one of the carbs. I noticed it boging around 60 MPH, new plugs and a little oil in the carbs works great now. If only all fixs were that easy.

04-25-2011, 01:08 PM
Inline should be fine but that specific pump provides too much pressure.

An Airtex works well, and should be OK inline as well.

04-25-2011, 05:14 PM
Or Carter #60504.

04-25-2011, 05:44 PM
Facet low volume avaiable at NAPA about $40


04-25-2011, 07:11 PM
I got the Airtex if I recall, nice and quiet. I tried the Facet and it was obnoxious with its noise.

04-26-2011, 08:11 AM
If I go for an electric pump, can I keep the mechanical pump as a reserve?

You probably know this but just in case, if the diaphragm in the mechanical pump were to fail, you would then be pumping fuel into the crankcase, with unfortunate results.

I received good advice about an Airtex installation in this thread (https://www.britishcarforum.com/bcforum/ubbthreads.php/topics/753857/Installing_electric_fuel_pump#Post753857)

Good luck!