Re: Bajaj Pulsar 150 All Versions

Idling RPM should be near to 1K when the bike is warm enough. Under hot conditions, if the idling is kept at 1K then your cold starts might be in trouble since the idle RPM level goes low and eventually shut off the engine.
When the engine is hot then idling increases and unless its crossing 1.5K RPM when hot, its not a problem. Always set the idling when the engine has warmed up and not when its HOT.

My place is not that cold, 12 degrees or so is the lowest temperature. Starts in 1 touch and idles tiny bit lower than 1K = 950-980 RPM. It also depends on the Air-Fuel ratio too mate. Too lean and there wouldn't be sufficient fuel to burn and stay alive. Too rich mixture and it dies again because of low air content, does bad to fuel efficiency too. This is your first bike I suppose. Well, the best thing is to sit on the head of a trusted mechanic or Bajaj service center folks and get the things done unless you feel comfortable with it.

Idling depends on the AFR too. Too low air or too low fuel will/may make the engine go off. I have been maintaining idling of 1K or less for the past 2.5 years now and it is holding up well with one push of self in cold mornings too. My current cold start idling is 1K exact. It goes down in summers. The good thing is that when hot, it doesn't cross 1.2-1.3K in idle condition. To set the idling the engine needs to be warm and not HOT or too cold.
I don't think using choke everyday is a good idea. It is a force feeding mechanism for the engine. From cold engine to more than warm in just 30 seconds is too fast. Choke should be used in situations when the bike has not been ridden for more than 10 days or so. The charge inside the cylinder will be gone and that's where you need to force feed it.
I believe in letting the bike survive on its own, breath and work on its own rather than forcing it to do that. Choke is not a daily utility tool of the bike, it is for certain circumstances. It takes the bike quickly to 3-4K RPM and that is a quick cold-heat cycle plus fuel wastage too.

Re: Bajaj Pulsar 150 All Versions

Thanks buddy. Ideally choke is put on when we start the bike for the first time in day, in bikes where auto choke is not there, it helps in proper flow of fuel (that's what I know) not mandatory though. I have been maintaining 1200rpm , kept on bit higher side for higher revving and also it idles there. I used to believe that 1k is the perfect RPM but factory setting comes in 1400 , when I asked ASC person about it he showed me few other Pulsars with 1400rpm.

When the bike is warm I keep it at 1200 , after riding for enough kms I find it idling at around max 1400k. I am satisfied with it. Keeping it at 1k problem I faced was the engine used to shut off in traffics even after enough riding.

Re: Bajaj Pulsar 150 All Versions

I agree with you bro.
I have also kept idle RPM to 1.2k
Using choke in morning for 15 seconds

Re: Bajaj Pulsar 150 All Versions

Yes, you are correct here. Keeping the idling a bit on the upper side of 1K helps in quicker getaways in traffic. I am happy with my traffic starts so adjusted mine accordingly. From what I felt, my idling has kept the engine relatively cooler than the ones with higher idling. This helps in savings the legs from becoming Kebabs
In colder regions there might be a need of choke but a little throttle input the bike always starts up and thus negating the use of choke everytime.

Re: Bajaj Pulsar 150 All Versions

Hi,
Day before yesterday my engine ceased. When taken to bajaj SC they confirmed it and said my piston block needs to be changed. I was awestruck as the engine oil drained cam out to be around 400ml. It was only around 1900km that I traveled. Engine oil used was Motul 15W50. Any idea why it might have happened?

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Piston Head And Spark Plug

Pulsar 150 UG4.5 overheating problem

Hello Friends,

This is Sanket and this is my first post after reading forums on this site from months.

I own a Pulsar 150 UG4.5 and i've done 10.4K Kms till now.

1.) I did my oil change on 7200KM ODO with Motul 7100FS and till then i am facing overheating of engine which is quite evident even on very short trips .

2.) Earlier i couldn't see any smoke( it was like transparent air blowing out of exhaust) from exhaust and it wasn't smeely too but now the smoke that comes from exhaust is slightly blue which is easily visible and kinda smelly to as if engine oil is burning too.

3.) On one fine day i reved up my bike and ride it at around 100-110Kmph for around just 2-3Kms and the engine was smelling like rotten egg and fumes was also coming from engine when i stopped.

and engine looses up power after some 50Kms of continuous riding and the then acceleration becomes as if i am riding a bajaj platina.

Kindly Suggest what's wrong and the causes of these problems and which oil i should i switch to Motul 5100 or Castrol power 1 or Valvoline 4t premium

Re: Bajaj Pulsar 150 All Versions

Bro check for engine oil leakege, how can Engine oil became only 400ml when riding it for only 1900 km's
Its a serious matter, I am also worried abt it.......
I was thinking to use Motul Engine oil but now I am scraed.....

Did you find any odd reasons for draining engine oil automatically so fast..... ???

Re: Bajaj Pulsar 150 All Versions

There wasn't any engine oil leakage but what happens sometimes is it gets burnt up.

This kind of piston damage can also be found on a bike that was run with the carburetor set too lean or one that was run with an air leak. To fully understand the cause of this failure, it was important for me to look at the rest of the piston. If you see the spark plug it is almost black. So what I can conclude is tuning of AFR is also an important reason here. And the oil actually burnt up due to heat. I was lucky to get away with a safe piston rod. I have changed the complete bore kit and running on breaking in period now. I believe oil grade used shouldn't be varied also.

My bike do take a lot of toll and abuse from me so do he showed me the way. Also for Motul Engine oil there are lots of duplicates in the market so make sure you are getting the oil from registered counter of Motul, 7208205166-Amit, he is the guy from Motul whom I contacted after the mishap (I got hi number from a thread mentioned somewhere here). I am planning to go for complete FS Motul 7100 20w50 after I complete 700km breaking in period.

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Re: Bajaj Pulsar 150 All Versions

[MENTION=64947]maadyy[/MENTION]: bro, it seems your spark plug is not in good shape. have you been using it since a very long time, when did you last changed your spark plug. it seems that your engine is running rich and spark plug is burning engine oil. so may be your your engine had leaks either from piston oil ring or stem seals of valves, which caused engine oil to burn up.

also if you read this thread completely you will find our that old generation pulsars i.e. the one you have are not very happy with fully synthetic oils. oil tend to disappear mysteriously i.e. without burning and without leaking. it may seem strange but a lot of ppl including myself has found out. so i will suggest never ever use fully synthetic oil in old generation pulsars specially motul 300V.

semi-synthetic oils are good enough for pulsar 150. there is no need of fully synthetic oils like motul 7100 and motul 300V. you can use any mineral or semi synthetic oil. you can try Shell AX7 semi synthitic oil.

Re: Bajaj Pulsar 150 All Versions

@ Prince First of all thanks bro, mine is only 1.4 years old and its UG4 not old gen. I was really awestruck where did the engine oil go. I have been using the spark plug since my purchase last year October. I am still completely clueless where did the engine oil go. I was using Motul SS oil not even FS . I came into the conclusion posted above after I had a long talk with Bajaj SC Manager and the engineer. But I still don't know how it happened. Thanks again for stepping in, I am still in search for the reason as I usually drain oil at around 1200-1400km.

During my piston block change I got the bike serviced also. The mech washed the spark plug. Do you suggest me to change it?

Re: Bajaj Pulsar 150 All Versions

yes, ofcourse.

and old gen meant all pulsars prior to P200NS.

Re: Bajaj Pulsar 150 All Versions

Thanks bro!

Re: Bajaj Pulsar 150 All Versions

Guys,

Need your advice for my Pulsar 150 UG3. It has crossed 77k km and need some serious servicing.
I have ordered for Motul 5100 engine oil and Iridium Spark Plugs from Laxmi Automobile, Pune. They are quoting 550 per spark plug for which I am comfortable unless it is really helpful for the bike. Also I want to know if wires needs to be replaced with spark plugs. Is the engine oil good for the bike? I was using Bajaj Synthetic oil till now.

Sent from my Micromax A116 using xBhp Connect mobile app

Re: Bajaj Pulsar 150 All Versions

Iridium Plugs - Not required IMO. Only advantage is longer life of plugs and better cold starting.

Save your money and opt for stock champion plugs they will be good enough. Use that money to get your bike serviced properly.

Re: Bajaj Pulsar 150 All Versions

Thanks Ashish. I cancelled my bookings and will visit local Mech to service my bike. I checked few posts and they said that Bajaj Synthetic oil destroys gears, the smoothness is all gone now.
I will check more posts if synthetic oil is good enough else will switch back to mineral oil.

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