mea culpa

Jonorow wrote:If you need a hand with that mike, let me know when your going and i'll give you a hand. I have a few odd days off here and there.

I'm in the Southampton area and would be happy to help out as well; although I've just sold the CRM tonight and gone over to the orange side

A seizure can just nip the piston rings so that you get very little compression and the engine won't run but will turn over quite easily. I've had this happen twice.

Knackered, that sounds like exactly what happened in the first few seconds, so that probably explains a lot, at least to me who is ...

Assuming that the coolant is still in the radiator -

Could be lack of 2 stroke oil. - Check oil pump pointers line up.

Thermostat has broken - unlikely.

Most likely running lean due to jetting or air leak. Nipped up at first, then caused more dammage as going though layby.

Needs rebore, new ...

That's bad luck, IMO, you have had two events happen, for reasons as yet unclear, the bike has got very hot,and lost compression, the sudden loss of cooling has in turn lead to the heat seizure, that once the engine cooled has released.
Why?
The needle position, shouldn't be quite that critical, by ...

piston and barrel removed now, more pics

Exhaust/nearside
http://i14.photobucket.com/albums/a340/drillam/Honda%20CRM250/DSC02916.jpg


Inlet/offside
http://i14.photobucket.com/albums/a340/drillam/Honda%20CRM250/DSC02917.jpg


http://i14.photobucket.com/albums/a340/drillam/Honda%20CRM250/DSC02918 ...

Heading up to Eastleigh on Sat morning to go on a trail ride with the local TRF. I took the motorway as I was running a wee bit late and it was only about 10 miles. Doing a steady 70mph and the engine cut, no warning, just died like the kill switch had been hit. Briefly twisted the throttle a wee ...

there's a thread somewhere which describes how to mod the wiring so the warning light comes on when the stand is down but the cutout is bypassed. Mine was playing up so I did it and it's fine now.

[quote="CR Mmmmm"]if we badger him a bit I,m sure he would sort out a ride out one weekday when there,s not many walkers, horse riders, and 4X4s about.[/quote]

Consider yerself badgered then Mike :-)

[quote="CR Mmmmm"]Do we have to wait until Sept, lets get it on.[/quote]

I'm with that man :-)

Sounds good. I can make weekdays or weekends, being a semi retired old fart.

Now that I've got me MK1 sorted I'm available for trail rides, weekdays, evenings, weekends.
Anywhere withing an hours van ride of Southampton, including Salisbury Plain.
Anyone going on green lanning in these areas wants some company? or got room for another rider in your group?
Then gimmie a shout ...

[quote="knackeredMk1"]Well at least it is sorted. :D[/quote]

yeah, and what a relief, at last.
I'll take the carb apart again today, my money's on a wobbly throttle stop screw. I'll mount it in the lathe chuck and see what happens. At least I know what I'm trying to fix now.

Went out green ...

Well I finally today got around to trying the next size up in pilot jet, No 48,,
Guess what ????


No difference.

So in went pilot jet No 50.
While I was waiting for the engine to warm up again I thought I'd turn the tickover speed down a wee bit and bingo, problem dissapeared. Not what you're ...

[quote="knackeredMk1"]Was just niggling and easy to do :cry: .[/quote]

Yep, might as well eliminate all posibbilities.