Mike,
I have been using an electric fuel pump for 20 years for a variety of
reasons mainly that my car is often stored for long periods of time and it
starts much quicker than cranking with a mechanical pump.
HOWEVER, it did not prevent vapor lock in my 66. Having a return line in a
later car may cure this however.
I did find that installing an electric fan did however cure the vapor lock I
was experiencing. The problem is that when the car sits after running there
is plenty of heat build up and heat soaks the fuel lines and carbs. This
also happened to me in heavy traffic. By installing an electric fan the fan
continues to run after the car is shut off and will continue to run until
the rad cools down to 170 or so. The air also keeps the carbs and fuel lines
from heating up as well as the STARTER which also experiences heat soak.
Try insulating the fuel lines and make sure your heat shield is on.
Hope this helps.
Mike
----- Original Message -----
From: "Michael Breen" <elvis@channel1.com>
To: "Mike Breen" <elvis@channel1.com>; <datsun-roadsters@autox.team.net>
Sent: Saturday, October 06, 2001 11:09 PM
Subject: Re: diagnosis please....
> Thanks for all your responses. The hesitation/sputtering is now happening
> intermittently, even without cutting the engine for a short duration.
Based
> on your feedback, I am treating this as a vapor lock problem. Short term I
> will try the "clothes pins as heat sink" technique, but I think I may try
> and install an electric fuel pump. From what I have been able to research,
> this appears to be a pretty straightforward solution to the vapor lock
> problem. So ...
>
> Has anybody installed an electric fuel pump? Would you care to share (in
as
> much detail is you can) the how and where of the procedure and any other
> information you think is pertinent. Any recommendations on a specific pump
> and where I can purchase it.
>
> Thanks as always.
>
> Mike
>
> 68 2000
> ----- Original Message -----
> From: "Mike Breen" <elvis@channel1.com>
> To: <datsun-roadsters@autox.team.net>
> Sent: Thursday, October 04, 2001 9:15 PM
> Subject: diagnosis please....
>
>
> > Hello,
> >
> > I could use your help diagnosing the following symptoms:
> >
> > 1. drive around for 20 to 30 minutes with no problems - in fact the car
is
> > running great.
> > 2. turn off the engine for 5 to 10 minutes
> > 3. start driving around again
> >
> > As I accelerate, the car hesitates as if fuel is not getting through.
The
> > hesitation is worse at higher RPMs. The problem is intermittent and it
> does
> > seem to go away after I drive for a while.
> >
> > Any ideas?
> >
> > Thanks,
> >
> > Mike
> >
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