[6pack] fuel problem

Fri Sep 14 12:18:09 MDT 2018

Just a thought here. When turning the tool to adjust needle height, clockwise raises it which riches the mix. It is limited and will "bottom out" when turned this way. Turning it CCW will lean out the mix. Going too far and the screw threads become disengaged and requires pushing the needle case back up to reengage the threads. There's about three turns here from full rich to full lean. 
If the float level(s) are too high unmetered fuel will be drawn in. 

Dick 

> On Sep 13, 2018, at 5:15 PM, Patrick Bitton via 6pack <6pack at autox.team.net> wrote:
> 
> I replaced the needle valve and everything is running as it should. Now I
> need to fine tune the carbs to get the right mixture. Right now they are
> running a little too rich but I can't get the needles properly adjusted. I
> feel that as much as I turn the tool, I can't get it to run a little leaner.
> I guess it's trial and error.
> I did take it for a little test drive and I can hear the carbs sucking in A
> LOT of air.
> 
> I will give a further update as soon as I can get it fine-tuned.
> 
> Patrick 
> 
> -----Original Message-----
> From: 6pack [mailto:6pack-bounces at autox.team.net] On Behalf Of COLIN THOM
> via 6pack
> Sent: Wednesday, September 12, 2018 9:05 PM
> To: 6pack at autox.team.net
> Subject: [6pack] fuel problem
> 
> the fuel pump never stops pumping. The needle valve in the float bowl (not
> the mixing needle and jet) is what sends unneeded fuel back to the tank. If
> the needle valve in the float boat sticks open, or the float(s) get a hole
> in them and cease to float, fuel will certainly flood the carb throat
> 
> Colin
> 75-sold :-(
> 
> 
> ----- Original Message -----
> From: 6pack-request at autox.team.net
> To: 6pack at autox.team.net
> Sent: Tue, 11 Sep 2018 12:00:01 -0600 (MDT)
> Subject: 6pack Digest, Vol 46, Issue 9
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> Today's Topics:
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>   1. Re: fuel problem (Andrew Uprichard)
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> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Tue, 11 Sep 2018 07:52:15 -0400
> From: "Andrew Uprichard" <auprichard at uprichard.net>
> To: "'Patrick Bitton'" <pbitton at tr-6.net>,    <6pack at autox.team.net>
> Subject: Re: [6pack] fuel problem
> Message-ID: <006f01d449c5$e2eb6690$a8c233b0$@uprichard.net>
> Content-Type: text/plain;    charset="US-ASCII"
> 
> Maybe I am missing something (not uncommon), but I wouldn't have thought a
> stuck needle valve would result in gas being dumped into the engine.  If
> this is happening, I would think there is a problem with the gas pump.  I
> don't know the TR6, but I imagine the mechanism is the same as the earlier
> cars with a rubber diaphragm which can leak.
> 
> Do you think the problem may be your pump?
> 
> Andrew Uprichard
> Jackson, Michigan
> 
> -----Original Message-----
> From: 6pack [mailto:6pack-bounces at autox.team.net] On Behalf Of Patrick
> Bitton via 6pack
> Sent: Sunday, September 9, 2018 3:49 PM
> To: 6pack at autox.team.net
> Subject: Re: [6pack] fuel problem
> 
> Thank you everyone for your suggestions.
> Indeed the needle was stuck. 
> I drained the gas from the carbs and blew some WD-40 and tapped the bowls
> with a small wrench and it work.
> Needless to say that when I changed the oil, the viscosity of the oil was
> like water because of all the gas that made its way into the engine.
> However, the car is now running REALLY rough. When I give gas, it start to
> putter and I have to pump the gas to get the revs up and then it will die.
> I never had that problem. What can this be?
> 
> Thanks,
> 
> Patrick Bitton
> 
> 
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