Is there any additive or way to really clean the carbon of of the valves?With out pulling off the heads.

 

I've heard a really good way is to run the car at fast idle, and slowly pour water into the carb. You have to keep gassing it to keep it running, but it works well. If you have TPI, I don't know how you would accomplish this.

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Rob
'86 TA 305 TPI
Gutted MAF
Ported Plenum
TB Bypass

 

You can also do it by pouring a SMALL amount of ATF into the intake with the engine idling about 1000RPM.