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nascardad
building custom autos
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My 65 Lemans has had a hesitation ever since I bought the car even before I rebuilt the engine. Car was orginally a 2 barrel, now has a Holley 650 on an edelbrock performer intake. It has hooker super competition headers, blowmaster 2.5" exhaust, lunati cam duration (Int/Exh): 301/313 lift .424/.424.
Heres what I have done to the engine to try to solve the problem:
2 new fuel filters. (1 at carb and 1 at the tank)
New mechanical fuel pump
New plugs
New plug wires
New Distributor cap
New vacuum hoses
I have also tried adjusting the timing a few degrees, although I am guessing because there is no timin tap on the balancer, just a scribed line. I am absolutely stumped on this car. The hesitation used to never bother me but it decided to almost stall out at the light the other day.
Any suggestions would be great.
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I'm thinking it's a carb problem. Either not enough pump shot or the secondaries not opening quick enough, or far enough. Does everything open all the way at WOT?
Could also be that there's too much spring or not enough weight on the mechanical advance.
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its a vacuum secondary, i put a spring in it for the secondary to start to open around 3k. I dont know if everything opens all the way at wot. I will check that out tomorrow.
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I think it is a Carb problem. Jrod send me a number so we can talk about this. Lou
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