Steve--Disconnect and plug (at the rear carb) the vac retard to the
distributor and re-time. I'm thinking there are leaks in that plumbing.
Also, although carb problems are normally the last thing to surface, perhaps
your bypass valves are suck air horribly (should blank them off). How about
your distributor rotor? I've had several drive me nuts cause the brass
doohickey was loose (superglue fixed that).
Running 20 BTDC makes me think that your cam isn't indexed properly. Any
engine work there lately?
Rick O.
72 TR6
-----Original Message-----
From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net]On
Behalf Of Steve Wylie
Sent: Friday, February 13, 2004 11:49 PM
To: 6pack@autox.team.net
Subject: I'm puzzled
Hi Listers.
I've had my 72 TR6 for several years now and it's never really run well
consistently. It's a Sunday drive so it's never been a big priority to fix
it. I've tried several things and had it running quite decent on a few
occasions, but I'm determined to get the car running well, all the time.
Right now the car runs best with the choke pulled half way but still misses
at all engine speeds. With no choke it usually misses pretty badly. Here's
what I know:
*With timing set to 4ATDC, the car barely runs. The best running is about
20 BTDC or thereabouts.
*Just replaced points with a Crane 700 ignition and high performance coil
(didn't improve problem)
*Retard works fine when I apply vacuum
*Centrifugal advance seems to be functioning upon visual inspection
*My vacuum line connects to a valve on my upper radiator hose, then to rear
carb. Not sure if it's functioning properly.
*Checked the valves and made very minor adjustments
*Plugs seem to be firing well based on visual inspection
*Carbs have been tinkered with many times with slight improvements noticed
at times. I haven't rebuild them and I'm tempted to have a pro rebuild them
just to make sure they're functioning properly
Any suggestions would be appreciated.
Steve
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