[Healeys] colortune

[Oudesluys]

Ken,

When the adjusting with the help of the Colortune is unresponsive you 
may have a slightly sticking piston, damper oil (ATF or sewing machine 
oil) not properly filled up, needle not properly adjusted and touching 
the jet, worn throttle spindels or other false air source (e.g. leaking 
servo, no restrictor in vacuum line etc). To overcome this disconnect 
and block off the vacuum line at the manifold.

High-ish oil contamination will show up purple-ish, hard to distinguish 
from running rich generally. But if that is the case you will have a 
fairly high crankcase pressure and worn cilinders/pistons.

Problem with an exhaust gas analizing system is that you do not know 
which carb is the problem as your measurements will give the average 
reading of all cilinders unless you have an oxigen sensor for every 
separate cilinder in a spagetti exhaust manifold..

Kees Oudesluijs
NL

Freese, Ken schreef:
> The rear seemed unresponsive. At first I couldn't lean it enough to get
> rid of the orange. After waiting a few minutes and returning to the
> task, most of the orange was gone but the blue wouldn't change much with
> adjustment.I am thinking the PCV fumes are throwing the color off for number 5. 
> Any comments?
> I have an oxygen sensor air/fuel meter test rig made but not yet
> installed.