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cylinders 1 and 4 not firing, idles, cuts out with throttle

Posted: Tue Nov 13, 2012 9:43 pm
by andr333w
hello,

a couple weeks ago, i picked up a 94 seca ii that isnt running.

so far ive replaced the following:
  • fuel pump
    pet cock
    fuel lines
    spark plugs
symptoms:
  • idles fine (around 1500) with choke open
    exhaust pipes 1 and 4 cold
    exhaust pipes 2 and 3 very hot
    all spark plugs sparking
    all carbs fill up with gas
    compression is fine
    any throttle kills the motor
    any change to choke kills the motor
i've also cleaned the carbs pretty well, short of separating the four carbs. didnt know how to get the cover off for the mixture screw until reading it on this website in the faq section.

my next step forward is to take the carbs off, take out the mixture screws, make sure they are clean, and the holes are clear.

any other suggestions?

thanks,

-Andrew