[Spridgets] Help diagnossing this....
aseippel at austin.rr.com
Sun Oct 2 16:17:55 MDT 2011
In a 74 midget, if you have unmodified SU carbs, I believe the throttle
butterflies have a spring loaded valve to allow the throttle to return to
idle slowly. It is part of the emission control. These valves get dirt under
them and/or the springs get weak and break. You can cut them off with side
cutters and solder up the remaining holes. If that is not the problem, the
ends of the connecting throttle shaft are probably not adjusted correctly.
From: spridgets-bounces at autox.team.net
[mailto:spridgets-bounces at autox.team.net] On Behalf Of
ryan.kubanoff at comcast.net
Sent: Sunday, October 02, 2011 10:55 AM
Subject: [Spridgets] Help diagnossing this....
Okay 74 midget, std cam, std distributor, bored .3 over., distributor at 12
o'clock, Idle set (maybe) at 1000B (i like smooth quiet purr at lights)
ran fine before replacing jets last june.B one jet repeatedly gets stuck
down when pulling choke out and I have to stop and push back up once car
gets to temp.B This is not the problem annoying but not the problem.
The problem is that my idle is all over the place (cold or warm).B at one
light its at 900 drops to 500 when I push in the clutch.B at the next light
it may be at 2100 at idle and when I push the clutch in to lower it it drops
to 1500 still way to high.B when I tap the gas peddle to bump the RPM's this
seems to have no affect on resetting the idle and it runs right back to
I have played with idle adjustmnet screws and it doesn't seem to matter.B I
have checked and oiled all parts of carbs I don't see anything sticking.B
Help I am out of ideas and this is just annoying.B I hate sounding like I
am reving my engine at one light and then almost stalling at the next.B
What am I missing?
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