[Healeys] fuel problem

[John Sims]

Do you have a filter between the tank and the pumps??? Seems to me that is
where it should be to prevent crud from fouling your pumps.

John Sims, BN6
Aberdeen, NJ
 
http://www.healey6.com


-----Original Message-----
From: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.team.net]
On Behalf Of jim brown
Sent: Friday, July 24, 2009 7:58 AM
To: healeys at autox.team.net
Subject: [Healeys] fuel problem

A couple of weeks ago there was a post outlining a problem with a fuel pump
"burnning" out on 2 occations. I didn't see a final resolution if there was
one. I have had 2 electric fuel pumps in parallel on my BT7 for years. One
went about 3 months ago. I just thought it was old age. Since then the car
has become fuel starved on 2 occasions. It sills run for a short distance
and then dies, full choke sometimes keeps it sputtering along for a while.
Both pumps are working (they click very fast) but no fuel delivery to the
carbs when it begins to die (scant fuel and a occasional bubble in the
filter). On each of 3 occasions one of the pumps eventually died while the
other kept going but still no fuel (shut it off so I didn't have to replace
2 pumps). The dead pump wouldn't work at first on the bench but after
shooting some lubricant into it it began to run-seemed like the impeller had
become stuck. After being towed home the car started right up the next
 morning on the still good pump. . I've never had a problem with vapor lock
in 15 years and think that an electric pump should overcome it anyway but
all three times it was a hot day. I think the pumps are not getting gas
which I suspect lubricates the impeller then it binds and the pump stops.
Gas tank seems ok, no leaks. no junk and the filter before the carbs is
clean. Any ideas.

Jim Brown