Cold start high RPMs

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Dec 22, 2018 | 08:27 AM

#21

JigJag

Veteran Member

Joined: Mar 2016

Posts: 1,333

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From: North Carolina

Also temporarily seal the overrun valve intakes in the front of both air filter boxes to check that they are not the leaky bit.

Nov 4, 2023 | 02:14 PM

#22

bavila

Junior Member

Joined: Nov 2023

Posts: 1

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From: O Porriño

PCV

Quote:

Originally Posted by leo_denmark

Throttle position Sensor. It's a potentiometer placed in the capstan tower sending a voltage signal to the ECU. 0,32V is idle, 5V'ish is fully open

I had a fair amount of air coming throug the crankcase vent valve connected on front of LH airbox. Blocking that lowered my RPM 150-200 (warm). I modified it by preloading the spring a bit more, that was the final thing that made my RPM settle correctly.

BR Leo

Hello Leo, I also have high revolutions when cold (1200) and when hot, close to 1000. I observed that the crankcase breather valve (PCV) allows air to pass at idle. It's right? If I lock it, it also drops to 750 rpm. How did you go about preloading the valve spring? Thank you so much!