[ROVERNET - UK] Fuel Pump woes
restore at nbnet.nb.ca
Tue Aug 2 17:40:05 BST 2005
You can check with the local flying club...the fuel pump used in a P6B is
identical to what was used for many years in small pipers etc...I know
because I bought one .
----- Original Message -----
From: "Slatskars" <slatskars at comcast.net>
To: <rovernet at lyris.ccdata.com>
Sent: Tuesday, August 02, 2005 1:20 PM
Subject: Re: [ROVERNET - UK] Fuel Pump woes
>I have a problem with Facet type pumps. They run constantly and I do not
>like the noise. I finally switched the MGB that had one back to SU. Much
> ----- Original Message -----
> From: "S Manwell" <smanwell at sprintmail.com>
> To: <lacpsyd at earthlink.net>; <rovernet at lyris.ccdata.com>
> Sent: Tuesday, August 02, 2005 4:14 AM
> Subject: Re: [ROVERNET - UK] Fuel Pump woes
>> I'm not too familiar with 3500S specifics, but I think the Federal 3500S
>> may have had a US-made Facet electric fuel pump. I think you might be
>> able to get the same pump at a NAPA autoparts store or similar. Also, I
>> wonder if there is any restriction in the straw that the pump is sucking
>> Lance La Certe wrote:
>>>Need help with fuel pump and discovered some info that may be helpful to
>>>others on the list.
>>>1) 1970 3500S ----I'm in need of a new fuel pump. Any suggestions for a
>>>state-side source (I will be contacting Ruth Burgess in Canada)
>>>2) I need to know if anyone can give me the specs on the OEM fuel
>>>pump----specifically what are the upper and lower pressure limits (e.g.,
>>>2.5 psi to 4.5 psi, etc).
>>>3) For several months I have struggled with the car not being able to
>>>once the engine was at normal operating temperatures (especially in the
>>>summer when it has become especially hot). After many helpful
>>>from the listers (e.g. blow out the return fuel lines; check the
>>>circulating coolant line which runs directly into the intake manifold;
>>>check your timing, etc)-----I discovered that when cold and just starting
>>>that my fuel pump was putting out only about 3 psi-----this was adequate
>>>keep things running smoothly, but after several minutes of running, as
>>>fuel pump becomes warm it actually becomes less efficient (apparently
>>>all fuel pumps operate this way----hence the listed range on the specs).
>>>As it turns out, when warm (and this has nothing to do with the engine
>>>temperature, but the pump temperature), it was only putting out 1 psi.
>>>this pressure there is not enough flow into the carb bowls to overcome
>>>tendency for the gas to vaporize, especially when the engine is warm/hot.
>>>With a properly operating pump which is keeping the pressure up, it
>>>overcome the tendency to vaporize and allow the engine to continue to
>>>4) My mechanic is suggesting that I find a pump that will put out about 7
>>>psi when cold, so that when it heats up it will still be putting out
>>>3 psi to overcome the vaporizing problems.
>>>Any help with this would be appreciated.
>>>Lance La Certe, Denver, CO
>>>Lance La Certe
>>>lacpsyd at earthlink.net
>>>rovernet mailing list
>>>rovernet at lyris.ccdata.com
>>>To unsubscribe, go to this web page, look near the bottom and follow
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