None running NC30, the story so far, please help.

[benny]

Ok so I had an NC30 that stood for a year, I left the bike to run until it ran out of fuel and that's all about i did to ready it to store (originally was only going to be over winter). I then decided to turn it into a race bike, the old HRC exhaust came off and it now has a Yamamoto half system. I think the jetting was 120/122 and it still is. The only other thing that has changed it an ignitech ignition, total loss and a custom loom. Stock airbox etc.
So the bikes get put all back together and it won't start, it has fresh fuel, spark plugs and carb rubbers. Just flattens batteries and occasionally backfires. My Dad who made the loom was a bit unsure about the wiring diagram ignitech supplied (it was a universal one) and thought he may of wired the coils back to front, so he swapped the coils over in the ignition map and the bike fired up. (Full choke, no throttle)
http://youtu.be/byZyBhyqMtk
It sounded like it was running fine but i didn't have time to check everything and it was a new exhaust with a baffle so wasn't sure how it should of sounded (this will become necessary later).
That was Tuesday the 17th, I then finished the last few bits before I was going to brands at the weekend with Jetblack for my ACU test. My dad tried to start it whilst I wasn't there and couldn't get it started, I wasn't worried as he doesn't really know which way the choke goes etc. (he's a car electrician by trade)
So Saturday the bike gets loaded into the van and driven down to brands, Saturday night we try and start it (Now Jet and I) and nothing happens for a while. He then finds giving a tiny bit of throttle got the bike started (It's a QA 90 degree throttle so it really was just a brush of throttle). Great stuff, only then to realise its only running on the front two cylinders and the rear two are stone cold exhaust downpipes. We check the spark and it looks great, but not much fuel seems to be coming out when we turn the bike over with our hand over the spark plug hole, and the plugs are just oily round the thread not petrol. So then he cracks the float bowl drain slightly to show fuel is getting to the gloat which it was, fuel tank tap also seems to be flowing nicely when checked... so we've got spark and fuel but still not running. Maybe not enough fuel?
Cue stripping the carbs down on the brands hatch garage floor, JetB did a great job carefully going through all the jets and making sure they're clean (I think some were quite gunked at the rear). Also checked nothing was sticking, throttle was working etc.
Carbs back on and the front two now wouldn't start ether! It was getting late saturday night and the end result was the bike wouldn't start at all. Sunday morning we were going to get to the dyno bloke to see if he could check anything.
Sunday morning comes and the dyno bloke wasn't available so we pull the plugs and dry them all off, try a few times then pull all the plugs again before taking to the dyno bloke. We also had a couple of runs down the hill of the paddock to see if we could jump start it (a more experienced rider did the sitting on the bike bit whilst JB and I pushed). He manages to get the bike running on the front 2 again by having the bike on full choke and a touch of throttle (after we said don't touch the throttle as these bikes hate that! a bit of egg on our face...) . He suggests the rear coil pack, we don't have a spare but he says the ZXR4 one will be fine. Luckily someone in our garage had a spare one so we swapped it over. Still no look, again only front two firing.
Plugs all out again for a good clean by JB whilst i get on the phone to local dealers to see if we can get any more plugs. No plugs available and no luck starting with the old plugs. We call it a day and pack up to come home.

Wednesday I'm trying the bike on my own, no luck so I pull the rear plugs and put some new ones in.
Still nothing happening on any cylinders, just a bit of occasional backfiring.
So i pull the front left plug.

Its pretty dry black on the end (Rich?) so i put a new plug in. Try starting the bike again and nothing happens, the backfiring is a lot more regular and can here something popping (i presume this was the front left cylinder firing and trying to run on its own) So i swap the front right plug too. Which was in similar condition to the front left.
Again the bike still won't start. Backfiring is much more regular and so is the popping but still no running. (When it back fires you get a sort of whopping noise after). You can't really hear much in the video but the starter.
http://youtu.be/NYAkKcYiogM
So I pull the front left plug to check it's condition and here's what it came out like.

Sort of half dry blackened on the top, so it must be firing but maybe too rich?
So I pull the rear too,

Look pretty much as they went in but smell nicely of fuel. I'm pretty stumped to whats going on, is it still the carbs? Jet sizes? Maybe the rear coil is bust but would it still spark? Could something be set wrong on the ignitech or wiring? The maps one Rick supplied but there's room for user error on our part. We wondered if its the advance but the front two sound good when it starts.

[benny]

For some reason the picture of the third plug keeps saying it over the height pixel limit even though even resized it to way below... Here's the link instead
http://i354.photobucket.com/albums/r435 ... /plug3.jpg

[jetblack]

Just to add to Benny's post above (and having worked on this for about 12 hours so far!) I still think the fact that its both rear cylinders that are not running and that the only thing that's really changed is the ignitech that its got to be something loom/Ignitech/coil/pickup related.

We cleaned the carbs, they're all seated properly, we're getting fuel and a good spark (to all 4 plugs). I'm just not convinced that the spark is at the right time... (i assume this is controlled by the ignitech)

Hope the gurus out there can give Benny and I some suggestions so we can hear this baby running on all 4!

Any multimeter checks we can do?

[28hodge]

Benny pull the carbs off and underneath the butterfly right where it seats are 3 very small holes, if the carbs have sat with any small amount of residule fuel in them these will be blocked by dry fuel. These affest the idle circuit, if it wont start and run it may be because these are blocked.

Get some carb cleaner and blow compressed air down them.

Failing that have you got a spare set of carbs you can try on the bike? if so try them.

When was the last time the bike ran properly/was in use?

[28hodge]

Just to add to Benny's post above (and having worked on this for about 12 hours so far!) I still think the fact that its both rear cylinders that are not running and that the only thing that's really changed is the ignitech that its got to be something loom/Ignitech/coil/pickup related.

We cleaned the carbs, they're all seated properly, we're getting fuel and a good spark (to all 4 plugs). I'm just not convinced that the spark is at the right time... (i assume this is controlled by the ignitech)

Hope the gurus out there can give Benny and I some suggestions so we can hear this baby running on all 4!

Any multimeter checks we can do?

If it is sparking and you have not been in to the ignition pick-ups then it should be sparking at the correct time, they run a wasted spark so at a guess i'd say its fuel/induction related not electrical, if it was electrical it just wouldn't spark.

Have you a stock CDI you can plug into it?

[benny]

Just to add to Benny's post above (and having worked on this for about 12 hours so far!) I still think the fact that its both rear cylinders that are not running and that the only thing that's really changed is the ignitech that its got to be something loom/Ignitech/coil/pickup related.

We cleaned the carbs, they're all seated properly, we're getting fuel and a good spark (to all 4 plugs). I'm just not convinced that the spark is at the right time... (i assume this is controlled by the ignitech)

Hope the gurus out there can give Benny and I some suggestions so we can hear this baby running on all 4!

Any multimeter checks we can do?

If it is sparking and you have not been in to the ignition pick-ups then it should be sparking at the correct time, they run a wasted spark so at a guess i'd say its fuel/induction related not electrical, if it was electrical it just wouldn't spark.

Have you a stock CDI you can plug into it?

I've got a stock CDI but i don't think it will work with this loom. Could always lay my road loom over the top and loop at clutch etc. though.
I'll check those holes. Carbs off again!

[28hodge]

Have you checked valve clearances? could cause it to be difficult to start.

[28hodge]

If you have a compressor, take the float bowls off and remove all the jets cover the carbs in carb clear and then blow compressed air through each passageway from both directions.

Also if you have a gas stove, before you try to start it next time warm the plugs on the gas flame a little. do not get them red hot just warm them then put them in.

[benny]

Have you checked valve clearances? could cause it to be difficult to start.

Nope, would they of gone out just with it sat stored?
Probably worth doing anyway.
The thing that confuses me is the front and rear have different symptoms.

[28hodge]

Nah if they were good before being stored they will be fine, but worth checking them all the same.

The fact that front and rear are all different makes me think carbs rather than elec.