Honda-SOHC

ok so had a busy sunday  advance is working fine,.
decided to check my coils so watched a utube vid

and i have 4.9 on the primary (ohm contacts on the yellow and black/white)
the vid said after switching to 2K on the multimeter keep the contact on the yellow wire and the other in the plug cap and you should have a reading of around 10. i get nothing

then on to the other coil and  4.8 primary and nil again from the secondary

i put the plug on the head and spun on the starter and there is a tiny spark you can barely see it (inside the garage).

has anyone tested there coils like this?

Billy

well,
had the spark plug repaired engine back in and started ok. but it runs v lumpy. the faster i went the better the engine pulled. at 70-80 ish no miss. below 4k misses splutters and now and then a small backfire, or pop out of the left side.

apart from the plug blowing out the bike was running great before i had the head off.

things i have checked.

timing both static and with strobe
valve clearance
carb bowl clean
checked the needle position on each carb also
timing again
new petrol (getting desperate)

it seems as if it is misfiring on the left most cylinder (sitting on the bike)

how / can i check the coil
could it be one of the condensers?

when the manual says number 1 is that to the left, is that as you sit on it or looking at it from the front? just a daft question i know but i am not sure.



 

inlet look good no pitting at all. same make of valves. ex all the same pitting , i do think the gap may have been on the tight side.
i do tend to keep them on the tight side, yes my fault.

I cant remember i get most of my stuff from DS i will have to check :-(

dam you all got it no trouble, yes old age must of set in. oil was running down no 2 and 3 and the wind must of been blowing the drops on to the finns.

o well after i sort the plug out i shall make more of an effort to remember the gasket.

the reason i have taken so long is E bay made me buy a cb500t 1976 £300 no exhausts but all the rest. so i have been stripping that .
but now on to the K6

sorry,
i live in Gloucester :-(

let me weight it and see how much to post
Billy

I have used heli coil lots of times but not for spark plug hole. i can't see why not
billy