healeys
[Top] [All Lists]

Re: Choking Problem

To: Healeys@autox.team.net
Subject: Re: Choking Problem
From: A2Garrison@aol.com
Date: Sat, 26 Mar 2005 15:43:15 EST
Rich
 
Thanks for the comments.
 
Does anyone know of a source of a locking style choke cable for a  BN6?
 
I have checked the linkages for binding and found none. With the cable  
released at the jet lever and the lever operated by hand, the jet can  be fully 
lowered. Although resistance is there, it doesn't seem to be  excessive. Then 
again, I have nothing to compare it to.
 
The throttle is fully depressed only while the choke is being  set. This 
eliminates the additional resistance that would otherwise be  caused by the 
throttle springs.  
 
Maybe I just need to eat more Wheaties.
 
Alan
 
In a message dated 3/26/2005 11:40:49 A.M. Eastern Standard Time,  
richchrysler@quickclic.net writes:

First  issue, holding the setting as required:
I was always under the impression  that the original choke cable assembly had 
a turn to lock feature so the  setting would be maintained as desired.
Maybe you need to find a  replacement that does this. These are easily 
recognized by the slot in the  shaft immediately behind the knob. This runs 
smoothly in a corresponding  flat in the i.d. of the upper cable tube. As you 
turn the knob clockwise  this should bind and hold as needed.
Second issue, excessive force needed  to activate chokes:
On the HD6 setup for your car, when properly set up the  first bit of choke 
cable travel should only be moving the fast idle cams  to speed up the idle. 
At this stage there is very little force needed,  because you're not yet 
pulling the jets down to enrich.
Then you should  feel the incresed force needed to move things further. Your 
setup will  have the cable fastened to the single lever on the second carb, 
which in  turn connects by way of a tie rod fastened to the front carb.
Binding may  be caused by the excessive pinching of the outer cable where it 
anchors to  the trunnion beside the second carb. In addition I would 
temporarily  release the choke cable completely and use your finger to pull 
up on the  jet lever of the second carb and judge whether there is still 
excessive  force needed to move things. Also make sure that the 
interconnecting tie  rod isn't either binding in some way, or causing 
excessive movement due to  wear.
Lastly, you mention twice about "fully depressing the throttle". This  simply 
opens the butterflies in the S.U. carburetors and if anything  causes more 
air to enter the equation, worsening your cold starting  effect. They do not 
act like a North American carb in that respect. Your  throttle pedal should 
depress only slightly while cranking to aid in  starting.
Rich Chrysler




<Prev in Thread] Current Thread [Next in Thread>