Hello guys, this is my first post in the forum, so greetings to everyone! I am a proud owner of a Florida V65 (1992) since recently and I hit a problem I am having trouble with, keeping it in the garage.
The bike was running fine otherwise, but I noticed that once it got warm from a few miles the engine would start misfiring (mostly on idle), so whenever I stopped at a red light it would stall in a few seconds if I didn't rev it. I thought it was the carbs for a while but while tuning them I noticed the left plug didn't have a proper spark, which led me down the rabbit hole of testing the ignition.
First thing I noticed was the ignition coil on the misfiring side was getting really hot, while the other was at a neutral temperature. In fact, it gets hot just by turning the key and not turning on the engine. I tested the right side coil and 2 others I had around and they all get hot just the same, but all these coils work fine in the right side.
So I thought it had to be a faulty CDI unit, I got the two I could find (used Motoplat ones which ran in a similar bike). The left side CDI in the bike was already a similar Motoplat one when I got the bike, while the right one is different and has a white stamp with moto guzzi branding on it.
Though, I tried all these 3 motoplat CDI and they all give me the same result, the coil keeps getting boiling hot. As reference for the installation I was looking into this diagram:
http://www.thisoldtractor.com/guzzi...OZtKV8D--c3XiubseZjJ92uxCfXZHf7sauy-kmMdrJ1yA
From the diagram two things aren't clear to me at all: On the right cdi, the red wire splits into a small cylinder (which seems to be a resistor), which was grounded in the bike chassis, but on the diagram its connection seems to go into the right coil??
The other aspect is that part of the circuit relating to the left coil red wire, which goes into some other component before returning to the right coil.
Can anyone please shed some light on what could be happening here and help me interpret the diagram??
The bike was running fine otherwise, but I noticed that once it got warm from a few miles the engine would start misfiring (mostly on idle), so whenever I stopped at a red light it would stall in a few seconds if I didn't rev it. I thought it was the carbs for a while but while tuning them I noticed the left plug didn't have a proper spark, which led me down the rabbit hole of testing the ignition.
First thing I noticed was the ignition coil on the misfiring side was getting really hot, while the other was at a neutral temperature. In fact, it gets hot just by turning the key and not turning on the engine. I tested the right side coil and 2 others I had around and they all get hot just the same, but all these coils work fine in the right side.
So I thought it had to be a faulty CDI unit, I got the two I could find (used Motoplat ones which ran in a similar bike). The left side CDI in the bike was already a similar Motoplat one when I got the bike, while the right one is different and has a white stamp with moto guzzi branding on it.
Though, I tried all these 3 motoplat CDI and they all give me the same result, the coil keeps getting boiling hot. As reference for the installation I was looking into this diagram:
http://www.thisoldtractor.com/guzzi...OZtKV8D--c3XiubseZjJ92uxCfXZHf7sauy-kmMdrJ1yA
From the diagram two things aren't clear to me at all: On the right cdi, the red wire splits into a small cylinder (which seems to be a resistor), which was grounded in the bike chassis, but on the diagram its connection seems to go into the right coil??
The other aspect is that part of the circuit relating to the left coil red wire, which goes into some other component before returning to the right coil.
Can anyone please shed some light on what could be happening here and help me interpret the diagram??