Re: Eliminating Hot Spot?

Posted by fred kanter On 2011/5/25 16:20:07

Let's think about this a bit. There were hundreds of thousands of straight 8 Packards made with essentially the same engine, distributor, carb, manifold etc. All of them did not have this problem. To go through the time and trouble to modify your engine while there are thousands on the road still in original configuration does not make sense.

However there is wisdom in spraying gas in the carb and having someone start it. Yes the risk of death is there but I heard that in heaven everyone who owned a Packard in this life gets the choice of a brand new early Twin Six or a later Twelve. Custom bodied open cars, of course.

Back to reality. When all else fails, read the manual. Works when assembling gas grilles, kids furniture and diagnosing Packards.

51-4 Factory Service Manual sez:

#8 Hard starting when engine is hot: This condition is usually caused by an over-supply of fuel. Very rarely an igniiton coil....

Leaky needle and seat
Choke valve sticking or incorrect setting of choke
Carb main discharge nozzles not seating or loose
Faulty coil

Unless someone is a highly experienced engine designeer I don;t think they can comment on your modification questions.
I will say one thing, Packard sure knew what it was doing and we are but mere mortals.

My advice, look both ways before you cross and follow the factory service manual.