Thanks Bob, I know the throttle shafts are slightly worn as idle speed
varies slightly (50-100rpm) from day to day. I guess the ware could cause
more trouble on cold days then warm.
I thought about the fuel pump but with the tank full and so high in the car
the mechanical pump only really has to pump the last 3 ft, and that wouldn't
explain the stalling after it does start but before it's warm.
BTW, what did you do with the existing pump when you added the electric? Did
you leave it in line, bypass it or remove it and install a blank on the side
of the block?
Thanks,
Art.
-----Original Message-----
From: Westerdale, Bob
To: 'McEwen, Art'; 'triumphs@autox.team.net'
Sent: 4/20/01 5:00 PM
Subject: RE: TR3 Cold starting problems
Art -
Two things to consider-
I had similar problems due to worn throttle shafts. To check,
grab
the throttle shafts close to the carb bodies and give them a firm yank
up
and down. open the throttle slightly, repeat. open it further, repeat.
Each
time, try to note whether the shaft is actually moving in response to
your
tugging. Ideally, they should be held captive within their bores. If
you
feel
them move, the shafts are creating a vacuum leak which can result in a
weakening of the mixture.
This defeats the mixture enrichment provided by the choke. ( not
entirely,
but enough to make trouble.) The car, when warm, will run up through
the
throttle range OK but may be a bit hard to start when hot. ( weak
mixture
again.)
You are probably correct in diagnosing empty fuel bowls after a
few
days non-use. I'd recommend an electric fuel pump instead of the
mechanical
one. With an electric one, the fuel bowls get filled as soon as the
ignition is on, wait a few seconds and hit the starter button. Off ya
go! I
mounted mine right under the fuel tank, bolted to the exterior of the
spare
tire well. Don't forget a filter upstream.
Regards,
Bob Westerdale
59 3A TS 36967
Art Wrote:
Subject: TR3 Cold starting problems
Forgive me if this is a repeat post but I didn't see my last posting (or
any
answers) on the digest:
Every spring and fall I have the same problem: it's warm enough during
the
day to make me want to drive the TR3 but it's cool & damp in the morning
so
the damn thing won't start, or if it does start it won't idle on the
choke
until it's fully warm (once the revs start to drop, extra pedal won't
help).
It seems to be worse if it's not driven daily, so I'm suspecting the
fuel is
draining away from the carbs.
In another month it will start just fine but not while it's below say
50f
overnight. Any ideas?
Art McEwen
'60 TR3A TS64989LO
Kingston Ontario
email: art.mcewen@moh.gov.on.ca
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