Hi Brian, It is a puzzle that you’re getting spark on cyl #4 but not #1. They both fire at the same time with one cylinder at top of compression and the other at the top of the exhaust stroke. So if you have spark on 4 then why not 1? Makes me suspect a plug wire.
There is a handy $10 tool on Amazon that will give you an idea if there is sufficient energy in the spark. Search for “Monkeyjack adjustable spark plug tester.” Very useful tool. Plug it into the end of the wire, ground it and then adjust the gap to see how wide it can be and still make an arc. If the ignition coil cannot produce sufficient voltage it will not generate a spark. More likely the wire to #1 has failed so try swapping wires around. If the spark is still weak check very carefully the bottom of the coil body where it was injection molded. I have seen this point of the plastic body crack presumably because it is thinner and with heat and age it fails allowing moisture in. The coil voltage then finds a lower impedance path to ground than going across the plug gap and arcs out the side of the coil. It will leave a carbon trace on the coil body. If that is the case dry it out, dab on some nail polish and try again. Hope this helps. Good luck. Colin > On Jun 6, 2018, at 4:19 AM, EGrider <gevan...@gmail.com> wrote: > > What Tommy said. > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to nighthawk_lovers+unsubscr...@googlegroups.com. > To post to this group, send email to nighthawk_lovers@googlegroups.com. > Visit this group at https://groups.google.com/group/nighthawk_lovers. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to nighthawk_lovers+unsubscr...@googlegroups.com. To post to this group, send email to nighthawk_lovers@googlegroups.com. Visit this group at https://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout.
