Originally Posted by
1967brutus
I strongly believe that it has to do with the liquid part of the mixture not entering the plenum (T-fitting) exactly centered. On the radial this appeared to be the problem and the three tiny holes in the elbow fitting cured that effectively.
bert that must be worth a trial test,cant really hurt seeing that the holes can be filled if not effective..
or maybe cause its not os quality..could be just be a sronger pulse from the front cylinder compared to the rear cylinder on my engine