Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: diabolics on June 27, 2016, 12:14:38 PM

Title: poor spark
Post by: diabolics on June 27, 2016, 12:14:38 PM

Hi. I have a k2 cb750 and I am having real problems statring it. It has a boyer fitted by the previous owner. I have replaced the plugs caps and coils but still seem to have a poor spark. I have charged the battery and cleaned the battery connections including the earth on the frame. Starter spins fine.Has anyone had a similar problem and hopefully found a fix. Any thoughts appreciated.  Thanks Adrian

Title: Re: poor spark
Post by: AshimotoK0 on June 27, 2016, 01:31:21 PM

Download my coil repair guide and follow the first bit check out the coil resistances, both primary & secondary. The Boyer system is very reliable and if working at all then it should be fine. Check the earth connection to the unit, possibly run a separate temporary cable.

http://www.sohc.co.uk/index.php/topic,10269.0.html