no spark in situ

[royblackburn1@btinternet.]

Hi all, I have read Boyers fault finding page and it says the ignition will not fire under 200 revs I have never built an engine up could there be a problem in the engine that wont let it rev to 200 or over when cranking it with kick start, as I have said before they will flash and spark  but not under compression with both plugs in,  new clutch drive plates have been fitted dry with the 3 adjusting screws flush with their studs but thinking on not adjusted the centre push rod. thanks for reading must be getting boring now.Roy

[berniej]

Do you think that your clutch might be slipping when kicking over under compression such that the engine isn't actually turning?

I guess that could explain it but I think that you'd feel the slipping as you kick and wouldn't hear the expected sounds of intake and exhaust as the engine turns over. If in doubt maybe tighten the clutch nuts down on the springs as a temporary measure and make sure that there's some free play at the clutch rod.

Cheers,
Bernie

[royblackburn1@btinternet.]

Thanks Bernie will have a go at adjustment when the weather picks up. Roy

[royblackburn1@btinternet.]

Hi all, adjusted the clutch Bernie but just the same, I did notice with the testers and plugs in situ when I turned the ignition on the testers flashed so I am thinking the ignition system is ok, when cranking with kickstart  every thing turns on the primary side and can hear the pistons moving, if I have to strip the clutch down (weather, time and room permitted) what might be making it slip slightly not getting up to 200 revs under compression. thanks Roy

[royblackburn1@btinternet.]

Thanks all for your input, the problem was as some of you said was duff plugs, bought some more (from a different supplier and cost more) and new caps and fired up second kick,bring on the good weather.Roy

[Mike Farmer]

 

Well we got there in the end---Brilliant (duff new plugs aint that rare)

Mike