Cold start issues

[Fj.itis]

Yep, both been done gave that a shot yesterday. Thanks

Here is a clip of a yamaha with similar engine to ours showing how much spark it produces. Mine had nowhere near that much and i couldnt get it to jump to the head bolt from a screw driver either. Check it out. Fast foward it to 1.54

https://m.youtube.com/watch?v=jaSKU2m3qbI

[Pat Conlon]

Power your coils directly off the battery...see what that spark looks like.

If the bike starts fine when warm, but not when cold, I'm thinking along the lines of Hooligan.
Something's flooding.

[Fj.itis]

Your right is it flooding but the choke enricher circuit is only so big it cant let any more fuel then the maximum amount and its verified that its closing when shut off and i have no other leaks to speak of so that leaves the cause of the flooding not enough spark but we shall see.

Did you see that vid of that spark? I am not getting anywhere near that so somethings up with the spark regardless.

[Fj.itis]

Ok guy's problem solved...

It was the coils as i suspected causing the engine to flood when cold. So check your spark! If it doesnt like like the video i posted then your running a weak spark and fuel economy and power will suffer. Due to me not owning an fj before i didnt realize, 1 the fuel economy and 2 the difference in power, now ive got better of both. We will chalk that one up to inexperience.

Hope this has helped someone out there with spark problems or hard to start problems.

Cheers

[Fj.itis]

Well there is more to the saga!

3 days after i changed the coils it started to go the same way again and eventually wouldn't start at all, no tricks would get it to start. So after some more testing and mucking around traced it back to the ignitor one channel was non existent and the other ok. Changed it over and she is sweet again, not sure why i got normal spark again after the coil change but stranger things have happened.

So end result still was spark but not the coils, learnt heaps about the ignition and how to properly test from this experience hope my drama helps others.

Cheers