Plymouth Owners Club

I have read many times the volume of material on this forum regarding electric fuel pumps added to prime the carb and save wear and tear on the starter after long periods of inactivity.  I don't think I have ever heard of anyone just installing a check valve on the fuel line to keep the fuel from draining back to the tank.  Seems like that would be easier and cheaper to do, so what am I missing?  Is there a reason why a check valve wouldn't work?

Often times the gas in the carb will evaporate due to today's  alcohol laced fuel.  Especially if it sits for a week or so there is nothing much between the carb and tank

1st:
the check valve wil not solve the evaporatig losses , as PlyCran said.
2nd:
if parking a hot engine, You will have vapor lock before the gas will evaporate.
Vapor lock is lots of gas bubbles in the fluid gas in the carb, a mixture which is difficult to ignite.
You must pump a lot of fresh "cold" gas before the engine will start.
With my additional electricel pump, I just feed fresh gas for 20 seconds,
only then I start and it runs immediately.
Same is after some weeks of parking: no gas left near the carb.
It is just my feeling to stress starter, battery and engine less with this procedure.
Greetings from hot Düsseldorf! (100 deg. F expected today)
Go

Thanks for the input!  I am going to go ahead and put in the electric pump for priming.

When you buy an electric fuel pump, be sure it is a flow through pump
that that allows fuel to pass through when the mechanical pump is operating.
I use a 6 volt Airtex E8902. Mount it as close to the fuel tank as possible as
electric pumps push much better than they pull. The Airtex comes with a filter
that is a must. I would also us a fuel shut-off valve between the filter and the
tank to facilitate changing the filter or replacement at at later date if required.

I plan on buying a low pressure 6v electric fuel pump to mount back by the tank to stop the vapor lock that has been happening. It is suppose to assist the stock pump. I put one on my 55 Dodge and it has work great with the over 100 degrees days that we have had last year and this year. I buy it through the Fifth Avenue Garage-   

Good Luck!
Ernie Baily

Quote from: 32cabrio on June 26, 2019, 07:08:55 AM
When you buy an electric fuel pump, be sure it is a flow through pump
that that allows fuel to pass through when the mechanical pump is operating.
I use a 6 volt Airtex E8902. Mount it as close to the fuel tank as possible as
electric pumps push much better than they pull. The Airtex comes with a filter
that is a must. I would also us a fuel shut-off valve between the filter and the
tank to facilitate changing the filter or replacement at at later date if required.

I use the exact same electric pump in my '51 Cambridge and it works great!
I use it to prime the carb. before starting. Very pleased with it.