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Breaking up bad at 3500 rpms

by Bill Whited
(Mahwah NJ )

1967! 427 / 400 hp car was missing very badly installed new plugs wires new voltage regulator, new distributor cap, a solid state ignition and had the three carbs rebuilt correct timing and it is hard starting now breaks up badly at 3500 rpms and falls on its face it will idle but when cold I have to keep the revs at 1500-1800 to keep her running the battery seems to be in the normal center position oil pressure is good about 1/4 of a tank of fuel right now

E-mail me at mycarvice@yahoo.com

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Sep 17, 2018
3500 RPM not breaking up now NEW
by: Bill Whited

Thank you Chris
I installed a new fuel pump and the car is not breaking up now.
I was on a 140 mile run yesterday it was hot and humid. Stopped for breakfast for about an hour had a hard time starting the car when I returned to it and after about driving 50 yards car stalled and had no throttle response at all. Waiting less than five minutes and re started the car the rest of the day it ran ok but at idle seems to be running rough more than normal. I also installed at the time a new vaccume advance.
Loosing confidence take my toy out for a run. One other thing if I wind the car up in first to 4500 RPMs it seems slower than it use to be ? the car has 3:36 gears.
Thanks for any advice you can give me.

Jul 17, 2018

by: Chris


It sounds like you are starving for fuel. Have you looked inside the fuel tank for rust? Some of these rust particles maybe clogging your fuel system. The higher the demand for fuel flow and you start getting your sputtering. Let us know and good luck!


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