Tips on how to pass the pollution test.

Join Date: Jan 2024

Location: Kochi

Posts: 123

Thanked: 137 Times

Do you person immoderate tips for passing the contamination test? My 2013 Honda Unicorn, which I usage for section commutes and errands, conscionable failed the contamination trial twice. Six months ago, it passed with a CO level of 1.15% astatine idling RPM. Now, it recorded 3.17% (the emanation bounds is 3.00%). The motorcycle was owed for work and was moving debased connected oil. The adjacent day, I took it for work wherever the aerial filter and lipid were changed, the carburetor was cleaned and tuned. Instead of the recommended Honda 20W40 motor oil, I utilized 20W50 Motul motor oil. The mechanic besides adjusted the idle RPM, expanding it from astir 1.2k to 1.8k.

I work online that riding the motorcycle hard for immoderate clip earlier the trial mightiness assistance region deposited carbon. Following this advice, I rode my motorcycle hard, hitting the rev limiter for respective kilometers. I past took it to the contamination halfway again immediately, but fto the motorcycle chill down earlier testing. Whenever I deed the rev limiter connected idle, it produced grey/black smoke. The contamination halfway technician mentioned helium smelled burning oil.

I tested again and got a speechmaking of 7.15%! I was shocked. He told maine that 80% of the BS3 and BS4 vehicles are failing the trial owed to immoderate caller updates by the Kerala government. Two different radical with BS3 vehicles besides failed the test, contempt 1 having done implicit motor enactment and service.

I?m disquieted that my motorcycle volition neglect again if I retest. Do you person immoderate advice?

Join Date: Oct 2008

Location: ??

Posts: 1,299

Thanked: 1,114 Times

I had to renew the registration of my 2009 Gladiator and was apprehensive of the emanation test. But, the motorcycle sailed done the trial a mates of weeks ago. In fact, I did the servicing (oil change, aerial filter cleaning & concatenation lube myself). Didn't cleanable the carb; instead, waited for reserve and past filled 500 Rs. worthy XP95. Drove continuously for 50 kms astatine varying speeds. Hopefully the carb is flushed clean.

Coming to your issue, I deliberation the grey/black fume from your exhaust indicates that determination is lipid leakage successful the engine. May beryllium worn retired piston rings?

And, cheque whether the aerial filter was truly changed (not reused aft blowing compressed aerial done it).

Any doubts regarding the substance quality? If so, Jio pump prime seems better.

Hitting rev limiter is the Italian tune!! Don't cognize if it volition enactment for a 150cc engine?

I deliberation the unicorn has a exhaust scavenging port; get it checked for accumulated debris. Also, cheque the choke cablegram and its play arsenic good arsenic information of the spark plug. This volition springiness an thought whether the motor is moving affluent oregon lean.

BTW, however galore kms has motorcycle run?

Last edited by vrprabhu : 22nd June 2024 astatine 20:17. Reason: Emoji fix