Turbonut0170 Posted January 16, 2023 Share Posted January 16, 2023 Starts on the button when off of choke sits ok till start to get warm 95 on oil temp revs drop to 1000 then bike starts to stall has had reg /rectifier replaced IMG_1498.MOV Link to comment Share on other sites More sharing options...
Member Contributer bmart Posted January 16, 2023 Member Contributer Share Posted January 16, 2023 What bike? Link to comment Share on other sites More sharing options...
Member Contributer Mohawk Posted January 16, 2023 Member Contributer Share Posted January 16, 2023 What temp on the coolant ? My 5th gen did that when the cold start wax unit was not working properly. It would start fine then get to 50c temp & wax unit would cut choke & bike would stall, even when riding it. Check the coolant hoses to the wax unit & check the temperature at the wax unit & its operation. Once it reaches 65c it was fine. Link to comment Share on other sites More sharing options...
Member Contributer BusyLittleShop Posted January 16, 2023 Member Contributer Share Posted January 16, 2023 Start with the battery for it's the weakest link in the whole system... To determine the condition of an Maintenance Free battery give it a refreshing charge... wait 30 minutes... measure terminal voltage... 12.8 or higher is a good battery... 12.0 to 12.8 is a insufficient charge... recharge... 12.0 or lower... battery unserviceable... Lithium batteries require a different routine than lead acid... understanding the chargers operation is key to success... 14.340 100% 13.300 90% 13.270 80% 13.160 70% 13.130 60% 13.116 50% 13.104 40% 12.996 30% 12.866 20% 12.730 10% 9.200 0% Link to comment Share on other sites More sharing options...
Member Contributer Grum Posted January 17, 2023 Member Contributer Share Posted January 17, 2023 What is the state, type and age of Fuel in the Tank? You may have a condensation situation and if you use an Ethanol Blended fuel this increases the absorption of water due to Ethanol's hygroscopic nature. If the fuel is old see if you can siphon out as much as possible and refill with nice fresh fuel Preferably non Ethanol Blend. How old or how many miles/kilometres have the Spark Plugs done? How clean or dirty is your airfilter? Not just a case of the Idle Speed adjuster incorrectly set by any chance? Or perhaps as Mowhawk suggested a faulty fast idle wax unit? Link to comment Share on other sites More sharing options...
Turbonut0170 Posted January 17, 2023 Author Share Posted January 17, 2023 It’s a vfr 800 2007 model had brand new battery starts on the button come off of choke let to get hot 95 on oil temp revs drop to 1000 then bike starts to stall petrol is fresh only put in other day hard to start once stalled Link to comment Share on other sites More sharing options...
Turbonut0170 Posted January 17, 2023 Author Share Posted January 17, 2023 2600o miles just been serviced clutch sounds bit rattled also it’s going back to motor bike shop to be looked at just wanted some ideas as to what it could be Link to comment Share on other sites More sharing options...
Turbonut0170 Posted January 17, 2023 Author Share Posted January 17, 2023 22 hours ago, BusyLittleShop said: Start with the battery for it's the weakest link in the whole system... To determine the condition of an Maintenance Free battery give it a refreshing charge... wait 30 minutes... measure terminal voltage... 12.8 or higher is a good battery... 12.0 to 12.8 is a insufficient charge... recharge... 12.0 or lower... battery unserviceable... Lithium batteries require a different routine than lead acid... understanding the chargers operation is key to success... 14.340 100% 13.300 90% 13.270 80% 13.160 70% 13.130 60% 13.116 50% 13.104 40% 12.996 30% 12.866 20% 12.730 10% 9.200 0% Got brand new battery on it 1st thing I did Link to comment Share on other sites More sharing options...
Turbonut0170 Posted January 30, 2023 Author Share Posted January 30, 2023 Turns out that my coils where knackered on it Link to comment Share on other sites More sharing options...
Member Contributer Lorne Posted January 31, 2023 Member Contributer Share Posted January 31, 2023 sorry I'm late to this topic, but good to hear you tracked down the problem. Link to comment Share on other sites More sharing options...
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