[T3] Carb Problems

["Steven Cooper" <steven.cooper@optusnet.com.au>]

<x-flowed>I've just got my fasty going again after an extended rest.  I think I've 
fixed the flooding problems she was having by installing slightly thicker 
gaskets under the fuel pump to drop the pressure a bit.  It think it was 
running at too high pressure causing the needle valve to leak and overfill 
the bowl causing flooding.

Everything has been recently checked and set on the ignition side.  Now she 
idles quite happily for long periods without stalling.  Idle speed has been 
set at 1000RPM (she's an AT) and the carbs synched for flow using the idle 
adjusting screws.  I have noticed, however, that the idle mixture screws 
don't seem to work as they should.  The right hand (drivers side) screw does 
the following:
1) Screw in - eventually idle speed drops and engine runs rough
2) Screw out - idle speed comes up and engine smoothes out.  Further scewing 
it out (ACW) seems to make no difference to idle speed

Left hand screw
1) Screw in - all the way in until it bottoms out - makes no difference
2) Screw out - all the way out, makes no difference.
In other words, adjusting the left idel mixture screw makes no difference to 
idle speed or engine running.

As I said, she idles and revs quite happily at 1000RPM when the engine is 
not loaded ie in neutral or park.  But as soon as I put her in R or D, the 
revs drop dramatically, she coughs and splutters and doesn't want to move. 
If I put my foot down enough, she eventually gets to apoint where suddenly 
she surges forward (or backward).

Any ideas what I should check or what might be at fault.  I've been through 
the carb set up and synch procedure a few times to make sure I didn't make a 
mistake, but any suggestions as to things I shoudl double check?  At this 
stage it's starting to drive me nuts, so any comments or advice would be 
most welcome.

Steven Cooper
Australia
72 AT FB Vert 


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