[Healeys] Running problem

Fri May 29 05:51:15 MDT 2020

I would first check Bob's suggestion. I've twice been caught out by needles
falling out of carb pistons.
Sometimes they slip back into place and stay there for a while.   Very
devious.

M

On Fri., May 29, 2020, 7:38 a.m. Tom Felts, <Tomfelts at windstream.net> wrote:

> but then again, that wouldn't explain the fuel leak to the ground.
>
> ----- Original Message -----
> From: Tom Felts <Tomfelts at windstream.net>
> To: Kees Oudesluijs <coudesluijs at chello.nl>
> Cc: healeys at autox.team.net
> Sent: Fri, 29 May 2020 07:10:13 -0400 (EDT)
> Subject: Re: [Healeys] Running problem
>
> 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 tank
>
> Took 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 Drab
>
> Vancouver B.C.
>
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