[Healeys] A bit of tuning advice
bspidell at comcast.net
Tue Jun 29 09:54:52 MDT 2010
Sounds like valve timing is off. You'll need to check the lift of the #1 intake valve at TDC to confirm, one way or another.
Bob Spidell - San Jose, CA
After having problems with the poor running of my BN4, I put an electronic
ignition in the distributer (which was also overhauled) and rebuilt the carbs
using a carb kit. However, I still can't seem to get any power.
I am pretty certain that the timing is right (having checked it with a timing
gun), all the electric connections (plugs, cables, etc.) seem to be sound and
I cannot identify any specific problems with the carbs (ie leaks around the
inlet manifold, etc.).
So I think the trouble is with the setting of the carbs, but I have been up
and down the adjustment nuts (rich to lean and back again) without any
The symptoms are ... a smooth idle, smooth but very sluggish pick-up on
acceleration accompanied by a loud machine-gun type rat-ta-tat-tat!
Customs House, Customs Way, Preston, Lancashire, PR2 2UW
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