[Healeys] Running problem

[Tom Felts]

Could be the "in-tank" sock fuel filter clogged up---happened to me years ago----VERY hard to find and I had to have the tank cut open to get to it---
----- Original Message -----
From: Kees Oudesluijs <coudesluijs at chello.nl>
To: healeys at autox.team.net
Sent: Fri, 29 May 2020 03:44:19 -0400 (EDT)
Subject: Re: [Healeys] Running problem

I notice you do not have a fuel filter installed. Fit one of the
 cheap transparent plastic filters (still the best) in a visible
 place in the fuel line to the carbs. Debris from the fuel tank may
 have stuck a float valve and blocked a jet or a gauze filter
 somewhere.Kees Oudesluijs

Op 29-5-2020 om 01:50 schreef Brian
 Drab:
 About 4 years ago I rebuilt my HD8
 carbs and the car has run great since then with no
 adjustments required or made.I put the car away for the winter in
 about November last year.
 In probably mid January I decided to
 take the car out. It was a gorgeous day and I had to go to
 the grocery store about a mile away. I started the car and
 it ran fine. I noted that the gas gauge read between empty
 and ¼ . I started of to the store, but I noticed an obvious
 smell of raw gas when I was driving. When I got to the store
 lot, I parked the car, did my shopping, and came back out. 
 When I turned the key, I now noticed that the gas gauge
 moved up to dead on empty whi8ch on my car means you are
 really out of gas!. When I started the car, I got about 100
 feet when the fuel pump started hammering. I got another
 couple of feet and the car ran out of gas. Fortunately, I
 was just across the street from a gas station so I took my
 trusty gas can, went over and filled it,  then came back and
 poured it in the gas tank. The car started up fine but began
 running really rough. I went another ½ block into another
 store, parked the car and went  inside. When I came back out
 about 15 minutes later there was a pool of gas, about
 2-3’wide, under the front of the car. I started the car and
 it barely ran. I literally had to coax it home. It sounded
 like severe fuel starvation – running barely on about 3
 cyclinders.There was no more smell of raw gas
 nor any fuel leak as before.When I got home, I rapped the top of
 the float bowls on each carb in caser it was a stuck float
 valve. and it seemed to run a lot better. I felt at that
 time that a float valve had stuck and probably siphoned the
 fuel out of one of float bowls through the overflow tube.Fast forward 3 months: Last night I was getting it ready to
 take it on a bit of a road trip today it and when I took it
 out,  it ran very poorly – again like fuel starvation but
 not as bad as before. It also popped back through the carbs
 frequently which I interpreted  to be a very lean mixture I did the following:put another 3 or 4 gallons of gas in
 the tankTook the float bowls apart and
 cleaned them out – there was a bit of sediment in them but
 nothing worthwhile. I also checked the floats which were
 both leak free. I also cleaned out the float bowl filters at
 the in line.
 I checked the Gros float valves and
 they seemed to work properly – held upside down, they closed
 and opened right side up.I disconnected the fuel line at the
 fuel pump and blew air back into the tank thinking that when
 it ran out of gas, sediment in the bottom of the tank may
 have plugged the intake. It blew fine into the tank.
 I have 2 fuel pumps on the car – the
 regular SU and a facet pump. I pulled of the fuel line at
 the float bowl and turned on the ignition. The SU pump and
 the facet pump each filled a coke bottle pretty  quickly. I
 did not measure pressure. The gas looked clear and pure. I
 do not have a fuel line filter. I checked the plugs all seemed good
 and were in fact burning on the lean side.
 I pulled the distributor cap and it
 was nice and clean inside with no sign of carbon tracks.
 I  have electronic ignition so there
 is nothing I can check there.I checked the timing – it was right
 on. No matter what I did it didn’t make
 an improvement.I replaced the Gros float valves but
 it made no difference.Today I pulled the carbs (which on a
 BJ8 is no easy task) I checked  the diaphrams and both were
 in good condition.
 Now I am stumped.
 Is it a fuel problem or something else? Can any one offer
 any suggestions?Brian DrabVancouver B.C.
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