Hi Mitch,
My guess is that the carbs are fouled due to the old gas. You should take
them apart, and clean up the lines and fittings with carb cleaner and blow
them out with compressed air. It wouldn't hurt and your performance will
improve.
Because you have to raise the piston manually to get a smooth rev, I
suspect that not enough gas flow is happening to raise it when you open the
throttle. Do you get good results when you use the choke?
You would be surprised how old gas can get gummy and mess up the lines in the
carbs, sort of like cholesterol does it to human arteries.
Fred - So.SF
BADROC
______________________ Reply Separator __________________________
> Subject: lack of power
> Author: "Mitch Planck" <mitch@ias.net>
> Date: 7/10/2000 11:47 AM
>
> I finally took my car out for a drive. It's been a couple of years at
> least. I needed fresh gas and some air in the tires, so I did that and
> while driving around I noticed a lack of power. I was in third gear
> going up a gentle incline at about 4000 rpms and had the gas pedal
> floored and wasn't picking up any speed. I should have been right in
> the middle of the power band there and been able to feel it. 2nd gear
> wasn't too speedy either.
>
> This is with a '69 1600, stock, except for a smog distributor. I
> haven't been able to tune the carbs properly according to my colortune
> though. I'm stuck on step 1 - getting the color to turn blue. It's
> always yellow and no matter how I adjust the carbs, it stays yellow. I
> made sure the needles are flush with the piston, put new oil in the
> damper, but it doesn't seem to matter. I've been reading about tuning
> the SU carbs too. If I lift a piston about 1/2" manually the idle
> smooths out (it's been running rough) and the color turns blue. The
> valves don't clatter, the engine sounds good under power and revs
> smoothly. I've got the timing set to 16 deg BTDC (smog setting, 0 deg
> is for non-smog distributor). I haven't checked the valves to see if
> they're set right (I don't know how first of all), but I don't know
> why it's performing so poorly.
>
> Does anyone have any ideas?
>
> -Mitch
> '69 1600
> Chelsea, MI
> http://beladi.stormloader.com/
>
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