[TR] TR4A - This Seems Odd

[Wbeech@flash.net]

Lots of variables to consider:
-Butterflies may not be fully closing, lift the piston and shine a light in, should be tight and even all around.  I presume you have solid butterflies?
-positions on the stop levers May be a tad off, keeping the butterflies open 
-Jet needle may be set in too high, you could drop them 1/16” and see what happens.  
-A friend of mine was given the advice to run the jet barrel adjusting nut all the way up, then loosen the jet needle just a little so it will slide with a little pressure, then return the piston to the body and let the needle bottom out in the jet barrel.  This should bring you to zero, tighten the needle in its new position and open the adjusting nut two turns to begin.   Has anyone else tried this method?  I haven’t but it seems to make sense. 

Bill B

Sent from my IBM 8088

On Sep 6, 2019, at 9:34 AM, G.D. Huggins <gdhuggins at genfiniti.com> wrote:

All,

Here’s another thing to ponder whilst I wait for my rebuilt lever shocks to arrive..

My engine will idle under the following conditions:
Idle screws are backed off all the way, not touching the plate, therefore not opening the throttle plate.  (In theory, they are fully closed.)
Mixtures nuts all the way lean. (In theory, there should be ZERO fuel going into the carbs.)
Both the throttle and choke are loosened from the linkage, making sure jets are all the way up, and throttles are not sticking
For the record, these are professionally rebuilt HS6 carbs, with super throttle shaft bushing, perfectly centered jets, etc.

In what is ostensibly a ZERO fuel/air mixture, how is this engine running?
Do these engines just have a magic power to idle when starved?

Has anyone else witnessed this on their own cars?
If so, should I do anything?  If so, what?  (other than maybe looking to make sure the needles/jets are matched correctly)


Kind Regards,

Guy D. Huggins
gdhuggins at genfiniti.com
817.454.6415




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