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Re: [Healeys] Running problem

To: healeys@autox.team.net
Subject: Re: [Healeys] Running problem
From: Bob Spidell <bspidell@comcast.net>
Date: Thu, 28 May 2020 18:00:24 -0700
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
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I had similar symptoms and an intermittent running poor condition on my 
BJ8. After a lot of sleuthing I discovered that one of the vacuum piston 
needles was loose and would drop into the jet hole, then get reattached 
and lifted out down the road.  Wouldn't explain your large puddle of 
gas, though.

Bob


On 5/28/2020 4:50 PM, Brian Drab wrote:
>
> 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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    I had similar symptoms and an intermittent running poor condition on
    my BJ8. After a lot of sleuthing I discovered that one of the vacuum
    piston needles was loose and would drop into the jet hole, then get
    reattached and lifted out down the road.  Wouldn't explain your
    large puddle of gas, though.<br>
    <br>
    Bob<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 5/28/2020 4:50 PM, Brian Drab wrote:<br>
    </div>
    <blockquote type="cite"
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        <p class="MsoNormal"
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        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">About 4 years ago I rebuilt my HD8
            carbs and the car has run great since then with no
            adjustments required or made.<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">I put the car away for the winter in
            about November last year.
            <o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">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.<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">There was no more smell of raw gas
            nor any fuel leak as before.<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">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.<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">Fast forward 3 months: 
<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">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 
<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">I did the following:<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">put another 3 or 4 gallons of gas in
            the tank<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">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.
            <o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">I checked the Gros float valves and
            they seemed to work properly ? held upside down, they closed
            and opened right side up.<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">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.
            <o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">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. <o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">I checked the plugs all seemed good
            and were in fact burning on the lean side.
            <o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">I pulled the distributor cap and it
            was nice and clean inside with no sign of carbon tracks.
            <o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">I  have electronic ignition so there
            is nothing I can check there.<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">I checked the timing ? it was right
            on. <o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">No matter what I did it didn?t make
            an improvement.<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">I replaced the Gros float valves but
            it made no difference.<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:115%">
          <span style="color:black">Today I pulled the carbs (which on a
            BJ8 is no easy task) I checked  the diaphrams and both were
            in good condition.
            <o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:black">Now I am stumped.
            Is it a fuel problem or something else? Can any one offer
            any suggestions?<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:black">Brian 
Drab<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:black">Vancouver 
B.C.</span><o:p></o:p></p>
      </div>
      <br>
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