Hi i'm new to the forum My BMW k75 has efi problems

[tetekto]

Hi, i'm new to the forum, i'm tetekto.
i start My BMW k75 with the mass air flow meter conected, it'll idle fine, but when i apply throttle it doesnt Perform well, unless i press the starter button and apply throttle. when i disconnect the mass air flow sensor it idles,and Performs as it should, the only downside is,it'll smoke black without the mass air flow meter conected. I've cleaned the mass air flow meter with crc electrónica cleaner, i have changed the gas , i have changed the meter. can anyone give me any solutions to this problem, it'll be greatly appreciated. thankyou.

[milq]

The crankcase breather hose can cause hesitation off idle, it's very thin rubber that tends to crack near the clamps. Left side of bike, Z-shaped hose coming off of the airbox. I've been able to change them without removing the airbox, just slide clamps on first and then insert hose, hold your mouth right, etc.

[Laitch]

Put the year of your moto's manufacture in your profile, tetekto.  How long have you owned this moto? Do you know its history? How many miles on the odometer?

Don't run the moto without the airflow meter connected. The breather hose milq described can be seen on the left side (clutch side) of the moto. It's often called the z-hose. You might have other vacuum leaks, too. Idle the moto then spray propane or carb cleaner on the hose. If the idle changes, it's leaking. Do the same with each of the three hoses that attach the throttle assembly to the air box.

[frankenduck]

Buy a new crank case breather hose anyhow. They only last a few years.

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