I had a similar problem on my '69 Mustang with mechanical fuel pump, big cam
and single plain manifold and Mopar electronic ignition in the distributor.
It was hard to start after sitting for several weeks in either warm or cold
weather.
I decided that the problem may have been fuel evaporating from the carb. I
solved the problem by switching to an electric fuel pump. Now I turn on the
key for a few seconds to let the carb bowls fill up, pump the pedal 5 times,
hit the starter and VROOM.
I'm not really sure that fuel can evaporate from a carb as the fuel bowls are
more or less sealed. But the electric fuel pump sure fixed my problem
whatever it was. Maybe the electric pump just increases fuel pressure enough
to be able to initially pump a little extra gas into the cylinders at
start-up.
I'm sure that there could be many other causes that other list members may
suggest - timing advanced to much is another possible cause. Also, if your
electronic ignition in the distributor is Petronix, I see an occasional post
on the Triumph email list about those things failing or the pickups getting
out of adjustment.
Just a few ideas.
Good luck.
Paul W.
Torrance, CA
56 TR3 V8
64 TR4
69 Mustang GT Conv.
----- Original Message -----
From: Rick1huber@aol.com
To: mgb-v8@autox.team.net
Sent: Saturday, March 05, 2005 10:25 AM
Subject: Hard Starting
Hi V8 listers,
A problem I've had for all 6 years with my car is now getting a little
worse. It's very difficult to start when cold, particularly in the winter.
Crank
for 15, 20 seconds, pumping gas pedal, then a little cough. Same thing
again and a couple of little coughs. Same thing again, and it kicks over
runs
very rough and puts out lots of black smoke and then starts smoothing out
at
the choke induced fast idle RPM. Once the engine is warm, starts easily
within a second or two with just a little depression on the gas pedal.
Any ideas?
I'm running a 3.5 Rover engine with a Carter 500 carb with the electric
choke module, GM intake manifold, electronic ignition in the distributor,
hot
cam, Isky 225 cam (I think that's the number, although Ted doesn't
recognize
it), standard MGB coil.
Any insight would be appreciated.
Cheers,
Rick
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