That's what I'm about to be doing...
The only thing I haven't tried was the ECU, but it's borderline impossible to get.
Help about motorcycle
- Thread starter Johnny25
- Start date
The only thing I haven't tried was the ECU, but it's borderline impossible to get.
It's been almost 2 years, but i'll update this because it might occur with someone else with the same symptoms.
Things i did:
- replace injector
- replaced spark plugs, twice: one with a step hotter and another with a step colder
- replaced lambda sensor with one from ebay
- replaced purge valve
- replaced throttle sensor
- replaced map sensor
- removed catalyctic converter (suggested by a Yamaha dealter tech) - this was utterly useless, as the converter has no sensor behind it, so it could not possibly affect injection
- replaced idle valve
None of the above sorted the problem.
It could only be the ECU. But the ECU is expensive and it needs the EU mapping, and I could only source it from India with their injection mapping.
As stubborn as i am to keep the bike.
I replaced the lambda sensor again, this time, with an OEM one. (costed 3x more than the ebay counterpart).
Problem solved!
No more engine oil fouling with gasoline, and the level stays constant throughout the mileage im putting in it.
Things i did:
- replace injector
- replaced spark plugs, twice: one with a step hotter and another with a step colder
- replaced lambda sensor with one from ebay
- replaced purge valve
- replaced throttle sensor
- replaced map sensor
- removed catalyctic converter (suggested by a Yamaha dealter tech) - this was utterly useless, as the converter has no sensor behind it, so it could not possibly affect injection
- replaced idle valve
None of the above sorted the problem.
It could only be the ECU. But the ECU is expensive and it needs the EU mapping, and I could only source it from India with their injection mapping.
As stubborn as i am to keep the bike.
I replaced the lambda sensor again, this time, with an OEM one. (costed 3x more than the ebay counterpart).
Problem solved!
No more engine oil fouling with gasoline, and the level stays constant throughout the mileage im putting in it.
I said this back on May 25th 2022...
Smoke test the throttle body. If you don't have a smoke generating machine the cheap way to do it is to use a cigarette or a cigar and blow the smoke into the throttle body intake with lung power.
Also, Test that there is connection between each of the sensors that you put teflon tape on and the metal that they mounted if they mount in metal. If those sensors mount in metal then the metal may be a ground and if the teflon tape electrically insulates them breaking the path to ground, then they won't work.
Also, Test that there is connection between each of the sensors that you put teflon tape on and the metal that they mounted if they mount in metal. If those sensors mount in metal then the metal may be a ground and if the teflon tape electrically insulates them breaking the path to ground, then they won't work.
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