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I just got done replacing the fuel line from the fuel tank to the fuel pump. the car is not jerking anymore but it is still hesitating from a stop. I took out the plugs and 5 and 6 were black but the other 4 looked perfect. I hooked up my timing light to check each plug and discovered that 2,5 and 6 were firing the same as the other 3. They were firing like 3 to 4 sparks real fast then 1 or 2 in time with the rest then repeat. What could it be? I've changed the plugs, wires, cap, rotor, the whole distributor, and the coil within the past 10,000 miles.

I hope somebody can help me out
thanks

Russell
 

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Russ
My 78 280z had a rough idle
and would bogdown at 1500 rpm.
It also would buck in 2nd.I adjusted the spring in the afm and it has run great since.I can't help you with the spark problem.
good luck
Dave
 
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