[T3] Irregular Idle....again...
Bobsnotch at aol.com
Bobsnotch at aol.com
Sat Nov 10 04:23:52 PST 2012
In a message dated 11/9/2012 5:57:48 P.M. Eastern Standard Time,
j_jonik at yahoo.com writes:
But, now (coincidental with that stud job?) the idle is kind of like
someone's sending Morse Code messages with little pushes on the throttle. No
backfires. It's a frequent, regular up and down, not slowly up then down.
When revved just a bit, or a lot, no irregularity is evident. Engine
sounds great otherwise, and starts very easily.
[ Had to interrupt the search for that problem when it became clear that
the oil cooler seals had to be changed. That's done, everything
reconnected. Same old idling problem though. ]
-Changed Pressure Regulator, twice, with good spares. No difference to
speak of. A little, but hard to tell.
- Cleaned spark plugs.
- Cleaned and messed with distributor...different points, different
condenser, different
distributor body itself, and different trigger contacts. Vacuum adv.
passes the suction test No difference noted.
- Hose from AAR to Air Distributor was loose. Ah Ha! Trimmed both ratty
ends a little and re-installed tightly. No difference noted re/ idle..
- Put hose clamps on those fat manifold hose sections. Maybe a percent
better, but not a fix.
Have not, yet, removed and cleaned, or changed, the AAR....but screws and
nuts are tight. Still can't find info on how to adjust that little set
screw inside.
I can't find the year or so old raps here about Irregular Idle. I need a
reminder about What Are the Most Likely Suspects that might cause this.
Sounds like you got most of them. I'd check for a vacuum leak where the
intake runners bolt onto the cylinder heads, since you've at least had the
3-4 side tin off (to replace the oil cooler seals). Also check the ends of the
hose(s) to the distributor, as they like to crack with age. Same thing
with the hose to the MPS. I know this might be out in left field, but also
check the front cover on the IAD for leaks. I know it's a long shot, but it's
not unheard of.
Bob 65 Notch S with sunroof and IRS (Krusty)
64 T-34 Ghia (Wolfie)
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