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Just an update changed the plugs and now starts and runs smooth again thanks for your help

Thanks I'll tackle it when I get a free chance this week and update once done cheers

yep on take off it has a ever so slight flat spot ... now how hard are they to change lol

hey, put another cog thing on it from an old gk carby i had laying around last night, went out tonight and this time choke was fully closed yay, but still had to pump accerator to start,but when it starts is sounds like its missing a cylinder for the first 15 or so seconds seconds then it clears, i ...

hey guys, went and had a look today before i started it and this is how the choke is when cold, i believe this is meant to be fully closed? and also would the cog have anything to do with it? and once warmed up opens fully fine, again to get it to start i had to keep pumping while cranking choke clo...

Oops just jinxed it lol went out tonight after it has been sitting for 20hrs and it did it again so as I was turning the key to crank I kept pumping the pedal till it fired does anyone have a link to the gn workshop PDF as the one in search post from 2009 doesn't work :( thanks heaps again I assume ...

Hey thanks guys I did the full throttle trick after that reply was done went out yesterday and she fired up normal did a compression test anyway and all cylinders are around the 180psi mark

Thanks guys will try that when I go to start it tomorrow, would that cause it to also sound like no compression when cranking? Thanks again

hey guys, got a weird starting problem on an 87 gn sigma, its started doing it recently, will go out after it sitting over night to start it, engine turns over and sounds like no compression at all, then it seems to sound like it builds the compression up eventually fires, runs and idles like crap, ...