Michael,
Look at the bottom of the carbs, where the linkage coming from the choke
cable connects to the carbs. Make sure the jets are all the way in. Push
them upward with your finger and see if they will go further. If they are
down a bit, it would cause the symptoms you described. A simple cable
readjustment could solve the problem.
Sumner Weisman
62 TR3B
Date: Sat, 19 Jun 1999 15:50:34 -0400
From: "Michael Ferguson" <fergie@ntplx.net>
Subject: SU Carbs
TR3 was running VERY rich. Tried adjusting jet adjusting screw, but jet
collar was turning with it. Turned out the locking nut was loose. Removed
carbs from engine, re-centered, tightened locking nut, reassembled and
installed. Pistons move freely.
Opened both jets by 15 flats, set throttle stop per instructions in every
manual I own (barely holds a piece of paper). Started engine, let it warm
up...and CANNOT make it run properly!! I get black exhaust and a VERY rough
idle at about 1000-1200RPM - any lower and it stalls. Black exhaust says too
rich so closed jets one flat at a time. No improvement, still black exhaust,
rough running. Kept tightening jet until all the way in! NO CHANGE.
No matter where I have things set, lifting piston by 1/32" increases idle
slightly. And the thing STILL runs like a tank.
Am I doing something wrong or are my carbs in need of major surgery? Thanks
for your help.
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