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Hi mate... i have the same problem... its not the carbs or the coils. i have repalced these...i have also changed the plugs... im gonna look at the fuel pump next...
Hi mate... i have the same problem... its not the carbs or the coils. i have repalced these...i have also changed the plugs... im gonna look at the fuel pump next...
Done all of that mate...i think the ecu is stopping it revving...but why????Done all of that mate...i think the ecu is stopping it revving...but why????
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that is the indication of the exup valve malfunctioning. it tosses the code of 7000 rpm for a few seconds on start up to let you have an indication that there is a problem.
This is a diagnostic code telling you there is a problem with the exup valve and/or servo, cables etc. Take the little cover off the exup valve and check the pulley is rotating about 1/3rd of a turn when the revs hit more than 4000 revs. It might be partially seized or a broken cable or problems with the servo. The mechanical bits are easy to fix.
7000 rpm is a self diagnostic code that either your exup valve is not being detected or the valve is locked up and not moving. If you put a header on your bike and took over the exup valve servo motor, you are going to have to put it back on. It also changes the mapping of the ECU and will not let it rev to redline when the Exup servo motor is missing.
Hi There, Got this from my copy of the Yamaha workshop manual for this model
The YZF-R1 features a self-diagnosing system for the following circuits: 1. throttle position sensor 2. EXUP 3. fuel level indicator light if any of these circuits are defective their respective condition codes will be displayed on the tachometer when the main switch is set to "ON" (irrespective of whether the engine is running or not)
1. throttle position sensor a) Disconnected b) Short-circuit c) Locked 0 - 3,000rpm 2. EXUP a) Improper connection b) Short-circuit c) Servomotor is locked 0 - 7,000rpm 3. Fuel level indicator light a) Improper connection 0 - 8,000rpm
It looks like you have a problem with the EXUP Valve on yours, probably seized or maybe cables not moving freely Hope this Helps
Have you checked if the EXUP valve is working? It should cycle when you turn the ignition on. If it's stuck in the closed position it will be choking the engine in the way you describe
Hi mate... i have the same problem... its not the carbs or the coils. i have repalced these...i have also changed the plugs... im gonna look at the fuel pump next...
Done all of that mate...i think the ecu is stopping it revving...but why????
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