Weak spark

monte4spd · Post by **monte4spd** » Tue Jan 27, 2009 10:35 pm

I have a 75 440 t/t and it runs ok when it is at an idle some what but as soon as i give it Throttle it starts to run week like it is only running on 1 cyl it starts to bog down i can pull a plug wire and it won't make no diff and it don't always matter witch one i pull. The spark on my 340 t/t is a lot better I can turn the clutch by hand and get a better spark nice and bright, could this be a week cdi box.

SHewelt · Post by **SHewelt** » Tue Mar 03, 2009 10:42 pm

Same as the other post...you have a hi-speed stator coil failing BLUE wire to engine should be 76-ohms....yours is probably failing too....common problem & it won't rev over 3000 RPM without backfiring & stalling out...