What causes a Bonneville 790 to have no spark?
As the igniter MUST be getting power if it is present at the coil then, by a process of elimination, you can be pretty confident that a failure to spark is caused by internal igniter failure.
How does the spark igniter work on a Bonneville?
The spark induced fires in both cylinders – one approaching top dead centre on compression, the other on exhaust (so called lost spark). The igniter reads engine speed from the signal and applies the appropriate advance from the throttle position sensor.
Are there any problems with my Triumph Bonneville?
The bike had around 3000 miles on the clock. Everything was fantastic until the bike start to manifest some intermittent problems: rough idle and poor acceleration (hole in acceleration at low rpm, staling…). She went to a Triumph dealer, they check the bike and did not find anything (intermittent problem). They done carburetors synchronization.
Where is the pick up coil on a Bonneville?
However, the more likely culprit is the pick up coil which is also much cheaper. You should get about 570 ohms resistance measured at the connector tucked up to the RH side of the battery under the side cover. Have you also checked to see if you are getting battery voltage to the +ve side of the coil?
As the igniter MUST be getting power if it is present at the coil then, by a process of elimination, you can be pretty confident that a failure to spark is caused by internal igniter failure.
The bike had around 3000 miles on the clock. Everything was fantastic until the bike start to manifest some intermittent problems: rough idle and poor acceleration (hole in acceleration at low rpm, staling…). She went to a Triumph dealer, they check the bike and did not find anything (intermittent problem). They done carburetors synchronization.
However, the more likely culprit is the pick up coil which is also much cheaper. You should get about 570 ohms resistance measured at the connector tucked up to the RH side of the battery under the side cover. Have you also checked to see if you are getting battery voltage to the +ve side of the coil?
The spark induced fires in both cylinders – one approaching top dead centre on compression, the other on exhaust (so called lost spark). The igniter reads engine speed from the signal and applies the appropriate advance from the throttle position sensor.