Wont start when hot.

[NickPoll]

Hello all, I took the TT Rep. out today for the first time this year. All went well. I visited a friend in the next village. As soon as I got there I tried to restart it with no success. I checked the fuel was getting through, checked the spark at both plugs. The plugs were new yesterday.
Although the BTH mag has a healthy spark, maybe it’s not good enough ? Even after standing for forty minutes it refused to fire. In the end we bump started it and it flew home without fault. Any ideas ? regard, Nick Poll.

[BRIAN MARSHALL]

Might be a matter of technique if you are a bit rusty with the bike ?? When restarting a Scott it is best to not use the air lever at all, not tickle the carburettor, and open the throttle at least half way. Most seem to need this unless stone cold, when the usual starting technique is necessary. All this assumes that you have an Amal carb, as opposed to an AMAC.( AMAC carbs and me don’t get on !)

[dave bushell]

Try the technique that I use. When I park up, even for a short while, I rev the engine, close the air lever/choke and hit the kill button. This leaves a nice rich charge in the crankcase for restarting. Leave the air lever closed and kick the engine over. It will usually start first kick. Open the air lever as soon as it fires up.
For my bikes this works most of the time (you can never say all the time with Scotts!), it usually starts first time whether it’s a 5 minute stop or 5 days.
Dave

[gammakeith]

I second what Brian said. I went through practically every combination to try to start my hot engine at the weekend. The only thing that worked was a fistfull of throttle and no choke. Worked again a bit later so it wasn’t a fluke!

Keith

[NickPoll]

When I got home I left it for a couple of hours, went back to it, tickled it, first kick it fired and second kick it was away. A quick blast round the village with no problems. Thanks for the tips, I’ll try and be brave and venture out again tomorrow. Nick.

[Graham]

I recently suffered similar problems. My bike stands for long periods between use.
Traced to incorrect mixture due to partial pilot jet blockage. Would start OK when cold, due to flooding carb. Drove OK and ticked over when hot but embarassing to restart.
After a good carburettor cleanout seems OK.

[chris wastell]

I never used to know whether or not mine would start after the first cold start of the day. I had the carb bored and a new slide by Bill Harley and it is as reliable as a Honda(?) for the past two years.

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