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can anyone tell me what these are and what part they play on a 1500?



airjet solenoids



thank you,

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They are the valves the ECM operates to control the fuel/air mixture.
 

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DaveO430 wrote:
They are the valves the ECM operates to control the fuel/air mixture.
could these cause all plugs to be black and when bike gets warmed up to start and idle fine but die when you give it throttle?



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DaveO430 wrote:
They are the valves the ECM operates to control the fuel/air mixture.
and now, what is ecm?



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The ECM is the engine control module. It controls various engine functions such as spark timing which it changes depending on the position of the gear position switch and the air jet solenoids of which I know little. It is possible to test their function, the Clymer and Honda service manuals spell out some checks on these units. Unfortunately I don't know all that much about them because I haven't had to dig into them yet. The spark plugs being black adn the hesitation and dying when advancing the throttle could be caused by a leak in the carbs, a sticking CV valve, or a problem in one of the many vacuum hoses, a possibly a problem with the reed valves, etc. There are many possible causes and the only way I know to determine what is causing it would be to check out the various systems by checking the components according to the service manual(s).
 

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exavid wrote:
The ECM is the engine control module. It controls various engine functions such as spark timing which it changes depending on the position of the gear position switch and the air jet solenoids of which I know little. It is possible to test their function, the Clymer and Honda service manuals spell out some checks on these units. Unfortunately I don't know all that much about them because I haven't had to dig into them yet. The spark plugs being black adn the hesitation and dying when advancing the throttle could be caused by a leak in the carbs, a sticking CV valve, or a problem in one of the many vacuum hoses, a possibly a problem with the reed valves, etc. There are many possible causes and the only way I know to determine what is causing it would be to check out the various systems by checking the components according to the service manual(s).
good info here..thank you,



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