- Joined
- May 6, 2017
- Messages
- 11
Hi all,
Our story of troubled bikes continues (from the cam sensor incident). My dad managed to put just over 100 miles on his bike (non-SS Dominator) over the weekend and everything was running great until yesterday when he was coming back home. The bike lost power and started to run like crap, he managed to make it back home and we started to troubleshoot the problem.
We initially thought it was a fuel problem as upon opening the fuel cap we noticed quite a strong vacuum in the fuel tank, enough to hear air rush in as we opened it. We didn't have too much time to investigate it. But after quickly starting up the bike it seemed to cure the problem so we chalked it up as the vent line was pinched under the tank causing the vacuum which led to the fuel pump fighting the vacuum. So we checked the vent line and nothing seemed to be pinching it nor was anything blocking the intake on the emissions box.
This morning when we rode to work, my dad nearly became a hood ornament as the bike decided to cut power/not accelerate as he pulled out of the junction. We turned back and bike was still running like crap so we garaged it. This evening we narrowed it down to the left cylinder not firing at all. Both exhausts were pushing out air/exhaust but you could smell unburnt petrol being pushed out of the left cylinder and through the exhaust. Also when we broke out the IR thermometer, the left exhaust header was a cool 35 C while the right header was 105C. We changed the spark plug in the hope that would cure it but had no luck with that. As usual we ran out of time to investigate further but I did manage to send an email back to the factory for some troubleshooting help. So I will post their reply once I hear back.
In the meantime, we were just wondering if anyone had any insights or had experienced a similar issue. Tomorrow we are going to check the wire and take the boot off and pop the old spark plug in their to see if we are getting any spark when we turn the engine over. My guess right now is we are looking at a dead coil pack (given that it died while riding). Maybe it is time to invest in that Bosch coil pack and plug wires on Norton Colorado, as OM electrical parts seem doomed to fail.
The funny side to all of this is, both our Italian bikes (Moto Morini and Moto Guzzi) are running flawlessly and have given us zero electrical faults since we purchased them. Even the old Husqvarna after being dropped in a river has fewer electrical issues than a brand new Norton.
Our story of troubled bikes continues (from the cam sensor incident). My dad managed to put just over 100 miles on his bike (non-SS Dominator) over the weekend and everything was running great until yesterday when he was coming back home. The bike lost power and started to run like crap, he managed to make it back home and we started to troubleshoot the problem.
We initially thought it was a fuel problem as upon opening the fuel cap we noticed quite a strong vacuum in the fuel tank, enough to hear air rush in as we opened it. We didn't have too much time to investigate it. But after quickly starting up the bike it seemed to cure the problem so we chalked it up as the vent line was pinched under the tank causing the vacuum which led to the fuel pump fighting the vacuum. So we checked the vent line and nothing seemed to be pinching it nor was anything blocking the intake on the emissions box.
This morning when we rode to work, my dad nearly became a hood ornament as the bike decided to cut power/not accelerate as he pulled out of the junction. We turned back and bike was still running like crap so we garaged it. This evening we narrowed it down to the left cylinder not firing at all. Both exhausts were pushing out air/exhaust but you could smell unburnt petrol being pushed out of the left cylinder and through the exhaust. Also when we broke out the IR thermometer, the left exhaust header was a cool 35 C while the right header was 105C. We changed the spark plug in the hope that would cure it but had no luck with that. As usual we ran out of time to investigate further but I did manage to send an email back to the factory for some troubleshooting help. So I will post their reply once I hear back.
In the meantime, we were just wondering if anyone had any insights or had experienced a similar issue. Tomorrow we are going to check the wire and take the boot off and pop the old spark plug in their to see if we are getting any spark when we turn the engine over. My guess right now is we are looking at a dead coil pack (given that it died while riding). Maybe it is time to invest in that Bosch coil pack and plug wires on Norton Colorado, as OM electrical parts seem doomed to fail.
The funny side to all of this is, both our Italian bikes (Moto Morini and Moto Guzzi) are running flawlessly and have given us zero electrical faults since we purchased them. Even the old Husqvarna after being dropped in a river has fewer electrical issues than a brand new Norton.
