Terrot MT 1, 100cc 2 stroke: non-starter!

[mini-me]

Foutre
merde
 putain
bordel
baiser ce connerie de un batard moto, je te emmerder.

won't work but you'll  feel better if it understands you are  a little peeved.

[Terrotmt1]

She is resistant to my Anglo charms for sure.
Nothing for it but to get rough and show her the boring bar!

[Terrotmt1]

Trying to keep my mojo with this thing, so tried checking a few things today.

The plug is remarkably DRY after all this kicking..

The timing is 6mm BTDC so needs a tweek to 5mm, but doubt it is that sensitive.
The points gap was far to big, nearly 40 thou, so bought that back to 12 thou, should be 16 but really difficult to get exact.
Plug gap is 25 thou.

Kicked it (over) many times and on each kick the thing almost fires, you can smell products of combustion.
I do not have the exhaust pipe on, so you can hear if it fires or not.
Almost every kick it fires, even sometimes for 1 or 2 seconds but will not run.

This is an improvement. It seems SO close to working!

Going to spend a few hours on it on Monday.
If this effort results in Zero then I will order a new piston @ 50mm and re-bore.

[iansoady]

2 strokes do like a bit of back pressure so you may be doing it no favours by leaving the pipe off.

Maybe it's never run and was designed only as an ornament?

[Terrotmt1]

Yes, good point.
I was being lazy not putting it back on, will do on Monday.
It would look good in a fashion shop!

[Rex]

I'd close the plug gap down a bit too.

[Terrotmt1]

About 18 Thou?

[TGR90B]

Don't you know?

[Rex]

About 18 Thou?

Sounds a good place to start. My Scott runs at that gap.

[Terrotmt1]

Thanks Rex.
No, I didn't know magneto ignitions use a smaller gap so the plug has always been at 24 thou.
On Monday I hope to get a few hours on the bike.
Will fit the exhaust. This engine has never run without the exhaust fitted, wonder if that might persuade it to run.
Will reset the timing to factory spec 5mm btdc, get the points closer to 0.4mm, plug to 18 thou
Fresh fuel (current fuel is a month old) and kick it to death.

If this all fails then it is a full reborn.
Been offered £1700 for it as it stands, but I need to get it sorted for my own satisfaction.
Not ready to loose £1000 just yet.

[john.k]

One stroker that wouldnt start,turned out cylinder base gasket had no transfer port cutouts.....Anyhoo,if it wouldnt go,I would hook up a large electric drill to the sprocket,and motor it over at a rate of knots.....This is how I start my rideon lawnmower,since the recoil broke.

[Terrotmt1]

Base gasket definitely has the transfer port cut out in the gasket.

I don't have a 240v drill that has a reverse and my battery drill is not man enough, tried it already.

Spent an hour with it in the garage this afternoon.
Put the exhaust back on.
Checked the timing, 5mm btdc so correct.
Set the plug gap to 18 thou, was 24 thou. I didn't know the gap needed to be 18 for a magneto.

Fuel in, choke on, good kick.

Fired 3 times ish, about 2 seconds max and stopped.

Almost every kick (now with the choke off) gave a single fire, but no continuous running.
This is quite a change to how it was before the crank seals were replaced with lip seals. Not sure if this is a better situation I'm now in.

That's it, gained nothing more than a foot hurting from repeated kicking, and have bent the bike stand too!

Next step is to change the timing to 2mm btdc and see what happens.

[chaterlea25]

Hi All,
Bas**rd 2 strokes !!!
I spent several hours earlier today trying to get a 2 stroke strimmer to start   
I tried all the usual tricks, hot plug, cleaned carb a few times, new plug, repeat adinfinitum 
Eventually I removed the drive that revealed a square socket that takes the flexy cable
I milled a suitable square section at one end of a piece of 10mm round bar,
put the other end in a drill chuck, and spun it
I could hear it attempting to fire every so often but kept spinning it adjusting throttle and choke until after about 5 minutes it ran on its own
The bast**d then settled down to a nice tick over and started on the pull cord every time after that
WTF?
I remember back when I worked part time at a local garage during school holidays some rebuilt engines were
very difficult to start for the first time after refitting them
2 or 3 batteries or tow them up and down the roadway till they sputterred into life, and then they would fire up easily every time after that

Enough rambling
John

[Terrotmt1]

I certainly share those feelings!
Will have another go tomorrow...

[john.k]

out here we got some "Aerostart" type stuff in a spraycan called "Start-Ya -!"£%^%".....none of the ether based sprays ever fail to fire up ,in my experience,I would never be without a can or two.