David: retarding the timing a little may make it start easier, but you
really want the timing set for the optimum once it is at operating
temperature. Sounds to me like you are not getting enough enrichment
(choke) for the cold starts. Check to make sure that when you pull the
choke, the jets drop sufficiently. Try a little overkill to see if this
helps.
What do you mean by "full clutch"? I think its best to start the car in
neutral, without depressing the clutch. Although declutching unloads the
transmission first motion shaft, it adds the resistance of the throwout
bearing which seems more to me.
Jim
East Hampton, CT
----- Original Message -----
From: "davidwjones" <davidwjones@cox.net>
To: <healeys@autox.team.net>
Sent: Monday, April 10, 2006 2:07 PM
Subject: Hard to start when cold
> Hi folks.
> Weather has been great (off and on) here in RI the last week or so, and
for
> the first time since it's resto, I've been getting my MkII tricarb out
and
> running around on a regular basis. --And it is running GREAT ! (Thanks
to
> those that helped with the rough running problem last summer)
>
> The only think I'd like to see improvement in, would be cold
starting. --It
> requires repeated 7-8 attempts, full clutch to fire it up before it
finally
> coughs a few times, and then barely catches, stumbling for a moment or
two and
> then revving. -Five to 7 minutes running, and then it runs great!
>
> The timing is set to factory advance, which is probably too advanced for
> today's 92-93 octane gas, --and it does produce some ping under
load. -I'm
> planning to retard the timing for the ping, --and I was wondering if
this will
> help with the cold starting.
>
> All else is new and has been checked and rechecked at original factory
gaps
> and settings. --The car fires up -immediately, when it is warm, --even
hours
> after the last time it was run. --But let it fully cool to the ambient
55-65
> degrees we are getting these days, and the hard staring reoccurs. --Or
is
> this fairly standard behavior for a tricarb with all standard
hardware? -It
> had dual HDs before the restore, and I do not recall it being this hard
to
> start.
>
> Aside from the timing, any ideas? --Original type starter, new points,
> condenser, coil, plugs, plug wires. chokes are all working and going
full
> travel.
>
> David W. Jones
> '62 Mk II BT7 tricarb
> Cumberland, RI USA
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