sounds like you have got the ideas worked out.
replace all those pesky components that wear out, and get fatigued. splash out and do the plugs aswell, they don't cost alot for 4k's
i had a similar issue on an astina one time,
oh, that reminds me, is lead no.2 sparking? if you put the spark plug in the wire does that spark too? (just hold the lead in a pair of pliers, and hold it near the rocker cover, should see it arc to the rocker cover. do same but with the plug in the lead) (I'm not sure how much you know, so rather tell you how to do it rather than you sittin there scratchin your head feelin silly :jamie: )
anywho, back to the astina, lead was sparking, plug was sparking (oh, you can also just swap the plug from one cyl to another and see if the problem stays on that cylinder to eliminate it being the plug. if it moves, then it must be hte plug...ill get to my story eventually)
so yeah, lead was sparking, changed order of plugs and it stayed on cyl.3. so thought fuel, had fuel, pulled injector rail off, had fuel, thought compression. rule of thumb compression test came up good. so gave up.
went back next day. said f@$k it.
ordered new leads.
hey presto, problem solvered. the lead was sparking, but over time the lead increases resistance (should be around 25K ohms, the astina ones were over 80K :P )and it couldnt deliver the power of spark to fire properly.
umm, so yeah, swap the plugs around to eliminate them being the problem.
get new leads, points, dizzy cap etc and see how u go
:jamie:
p.s. well done on coming to us with a problem you have made some attempt at :P
rules out alot of things, like sticking valves :lolcry: or pushrods out of place lol
must be rambling by now, goodluck mate :wink: