runing hot

[wilis]

Hi.hopefully someone can help,860gt,after reassembling top end the front cylinder is running a lot hotter than rear.would i be rite in thinking this is carby problem.thanks GW

[Craig in France]

Hi.hopefully someone can help,860gt,after reassembling top end the front cylinder is running a lot hotter than rear.would i be rite in thinking this is carby problem.thanks GW

Well, it might be, GW - certainly the fuel supply is normally a good place to start when looking for the origin of over-heating. Have you tried switching the carbs and seeing if the overheating goes with the carb, or stays with the rear cylinder?

Otherwise:
1. I'm guessing it's over-heating on tick-over - ? (Which begs the question, do you a tick-over?). Have you checked for an air leak, especially around the inlet manifold? Did you replace the carb insulator? And did you clean the carb, i.e. do you know the idle circuitry is clear and working properly?

2. Remember the old adage: it's probably the thing you last fiddled with . So, was the rear running hot before you re-assembled it? In fact, why did you re-assemble it?

3. And what ignition system are you running?

Ciao

Craig

[wilis]

thanks graig, problem was broken wire to coil.gw

[Craig in France]

... problem was broken wire to coil

Thanks for the feedback, GW. So, a broken coil wire was causing over-heating? Can someone explain this to me, please?

TIA.

Craig

[wilis]

was underheating if thats a word.the hot cylinder was ok.was one of the wires from stater that was partly cut.