>
> Well, I got a colortune kit from TRF last fall, and tried to use it to
> tune my '76 TR7. I did not have much sucess with it, but I think it was
>mostly
> because of my carbs. I just can't seem to get the rear one (Strombergs both)
> to run rich. Even with the needle out all the way, I found it to be running
> slightly lean. Any suggestions?
I would check the obvious things first like float level and needle centering
(I'm guessing this applies to Strombergs). After that, I would double
check that the air flow is balanced between the two carbs. In the colortune
sheet I got they mention that greater mixture sensitivity in one carb
versus another is due to air flow differences. Makes sense.
> Anyway, I had a lot of trouble getting the
> front carb to show yellow with the kit in place (running rich). My main
>problemseemed to be that the cylinder in question would simply stop firing. I
> eventually gave up on the colortune, and went to adjusting the mixture by
>first
> the idle quality, and then the plug color. I now have the front carb pretty
> close, while the rear carb is still a bit lean, with no more room left for
> adjustment. If I could only get the damn thing to start, then I could finish
> my tuning. Oh well...
I was a little worried about the different sparking ablility between the
colortune and my regular plug. I did a real live test and could spot
no difference in my case.
> P.S.: One other thing I found kind of annoying with the colortune kit was the
> wire extender; I found that the electrode at the end of it was too small to
> get a good connection with the spark plug wire (I'm running Lucas Sillycone
> Sport wires), i.e, it's smaller than a real spark plug electrode.
I noticed this two but it didn't cause me any problems since I am using
plug connectors that connect with the screw-on teminal off.
--rod.
--
Rod Barman, Dept. of E.E., University of British Columbia
rodb@salmon.ee.ubc.ca
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