Idle RPM rises after long ride

[revhappy]

Hi Guys,

 

I have a Bajaj Pulsar 180. Recently I have noticed that the idle RPM is at 1k while starting the bike, but after a long ride(15-20kms) the idle RPM rises to 1.5k when I stop at signals and also the engine feels very hot. It is an air cooled engine.

 

Recently I changed to Putoline Engine Oil 20W50. I am suspecting its the oil change that is causing this.

 

Can you please suggest is this normal?

 

Thanks in Advance!

Revhappy!

[Pandoras Kitten 3]

This is normal for both bikes I've owned. Nothing to worry about

 

These days I just change the idle for starting, warmup and then all the way down once warmed up.

[revhappy]

Thanks a lot Kalyan

[Your Mother]

Very normal. I got it on my bike too. Usually it happens when you've been on the road for very long/rev at high speeds. Give it like 5-10 mins. The heat would go off. If it persists, go to Mech. Might be carb at fault.

[rockerz90]

adjust the idling speed.. idling speed is located at the carburator.. when the engine is hot, the idle speed will be fast..

[testamant]

Hi Guys,

 

I have a Bajaj Pulsar 180. Recently I have noticed that the idle RPM is at 1k while starting the bike, but after a long ride(15-20kms) the idle RPM rises to 1.5k when I stop at signals and also the engine feels very hot. It is an air cooled engine.

 

Recently I changed to Putoline Engine Oil 20W50. I am suspecting its the oil change that is causing this.

 

Can you please suggest is this normal?

 

Thanks in Advance!

Revhappy!

 

Regarding your Carbs ,go get it retune,the EO should not mess with the settings of your air and fuel mxture,usually when tuning,the engine must be hot and running for the mech to acquire the rite air and fuel mixture at 1k rev.1.5k is too high.aniwaes if the mech says he have fixed it and it is still the same way .it is maybe due to failure of coldstarts if they set the tuning to 1k rev.goodluck bro!!!

[Wayang]

experienced the same thing while riding the XR400.. can anyone explain y the idle revs r higher when the engine is hot ?

[CivicDash]

It's the law of thermodynamics. When the engine is hot there is a greater temperature range between the engine cycles it will produce more power thus increase in engine rev.