[Triumphs] Carb problem?

[Dave1massey at cs.com]

In a message dated 11/15/2006 2:47:42 PM Central Standard Time, 
acs25m at swbell.net writes: 
> Does any body out there have any knowledge about Stromberg carbs? My TR250 
> has been up on jack stands for the last 3 years. I just finished overhauling 
> the two carbs. The engine starts right up but won’t idle down. I have backed 
> off the idle screws as far as they will go and the engine is still turning 
> over at about 2000 rpm. I purchased the tool for adjusting the needle 
> enrichment only to find that my carbs are not adjustable. I placed the unisyn meter 
> over both carbs. The front carb was reading really high compared to the rear 
> carb also when applying the meter to the rear carb the engine will pick up 
> another 1000 rpm. Has anyone had these kinds of problems? Is this something that 
> I can fix or does it have to go to a professional? Any help would be 
> appreciated.
> 
>  John R Maneke
> 
>  
> 
> 
> 


Sounds like the throttle plates aren't centered.  You will have to remove the 
carbs (start with the front one) and loosen the screws that secure the 
throttle plate and then wiggle things around letting the throttle return spring 
close the throttle.  The throttle plate will tend to find the center itself.  Look 
for a uniform and minimum gap around the plate.  Tighten the screws and try 
running the engine again.

If that doesn't fix it start looking for vacuum leaks.

Dave
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