Malcolm,
Do as Pete suggests and try centering the jet. But before you go to that
trouble, be sure you haven't reversed the dashpots between the two carbs.
These are usually hand selected at the factory for the best fit.
Then try centering the jets. If that doesn't work and they still stick, use
the very finest emery cloth and a little carb cleaner to see if you can
clean and relieve the interference between the piston and the inside of the
dashpot. Sometimes it's just a little dirt that gets up there and prevents
the smooth operation. DON'T try to take any metal away. The piston and
dashpot need to be nearly an air-tight fit between them. Just lightly
burnish the two parts and see if that doesn't allow a smooth drop of the
piston.
Cheers,
Lew Palmer
-----Original Message-----
From: owner-mgs@autox.team.net [mailto:owner-mgs@autox.team.net] On Behalf
Of Malcolm Jeffcock
Sent: Wednesday, August 25, 2004 8:11 PM
To: mgs@autox.team.net
Subject: Coil?
Listers:
A couple of weeks ago I posed a question about my MG's
symptoms...coughing los of power etc. at about 3000 rpm. Well I replaced
coil, condesor, points all based on the old adage that 90% of "carb
troubles" are electric. No change I now have discovered that one of my
carbs (back one) is sticking. The piston stays "up" causing the irregular
performance-running on 2 cylinders(?). I have cleaned it oil etc. it still
seems to stick once car is at around 3000 rpm for 30 seconds or so. Anyone
else had this trouble,how do I fix it?
Malcolm
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