Query approved.

even after engine warmed up ? Check head gasket, piston rings. Use only 20-25 ml 2T

+ 100. Seems like sign of a Jammed Piston Rings. I might be completely wrong though.

How about the 2T oil directly going into the crank case. This might be the case.

Another one could be, as already said, piston rings or the piston

Thanks for the reply... So looks like there s no need to get the bike s engine ripped off to check/change the packaging....
Also how long would it take to check and if reqd change the piston rings... anyone aware of a good RX mechanic in bangalore, preferrably in shivajinagar area...?

Raghu, looks like u r being taken for a ride by your mech.

Check the spark plug type and electrode gap. I think for RX plug type is BP7HS from NGK. will look it up for u if u need that info.

Tell me, is the engine oil (not 2T oil) level dropping? If yes, u have a busted oil seal and the engine oil is finding it's way into the combustion chamber. Had the same issue with my RD. Fixed the Oil seals, problem solved.


Also please get your oil pump going again.

It's very reliable. It is better for your engine than premix. I have ALWAYS used my oil pump (RD, RX100 and RXZ 5s) without any problems.

Show ur bike to another competent mech.

Premixes at oil bunks very often use 20W40 instead of 2T. That could also be an issue.

If u r using 20 ml / Liter, it is too low coz on the RX, 1 liter petrol uses up approx 30 ml oil. With the oil pump on. (1000 ml = 1000 km at approx 30 kmpl)

Get your oil pump removed from the bike if u still intend to go with premix. Nothing is worse than running a dry oil pump. Renders it unusable very soon.

Remember that Oil Pumps are an UPGRADE over premix. Get the oil pump calibrated correctly.


Get your bike a second opinion. If another mech also tells u to open up the engine, make sure u have all spares and the budget to see it through

Changing gaskets and rings will take approx 3 hrs provided u have all the spares handy.

Hey.. thnx a lot for ur suggestion.. even i had the doubt that my mech is taking me for a ride, and hence wanted to get some opinions of you guys on the forum..
As i had already mentioned, i have got the oil seal changed and that did not fix the problem, and only after that, my mech suggested that i open up the engine.

the engine oil is not dropping very soon, i use shell 20W50

i am a big fan of the pump, i never wanted to use the premix, i have also started a thread initially when i got hold of this bike here, asking if pump is better or the premix, i did get mixed responses though, so i gave to a YASS and got the bike serviced and specifically told them to check the pump and let me know, i also told that i wouldnt mind getting the pump changed in case its not working, but they told me that its fine and even filled my side oil tank with the yamalube 2t oil, but a few weeks from there and my bike almost seized. so i ditched the pump and went back to premix.

i have completely removed the connection to the oil pump in the bike.

One last thing is, im just not able to find a good mech who knows everything about an RX, who can advice and fix this problem for me... Please please please let me know if you/anyone is aware of one..

Time & again I've been saying this all over

Yes, there's a best mechanic near your home - Its you!!! Learn the job it isn't that difficult.

Hey RG... you have been telling this... yes. but its just that i dont find time to do this. I get only two days off in a week which keep me occupied with something or the other.
i would love to do these things myself though, but procuring all the right kind of tools required for this and then doing it myself.... easier said than done........

I dont want to be in a spot where i ve tried somethig and am not able to put it back together, hunt for a mech who will come home and do it(out of the question.. mech s here are pretty arrogant and wouldnt entertain this)

and be left without a bike for the week.. travel 36 kms per day.....

Excuses!!!

Not just disconnect. DISMOUNT the oil pump from the bike. NEVER run a dry oil pump. It will be ruined.

Which city r u in?

I am from BANGALORE!!!!

Whoa there tiger, easy!!!

Have u tried speaking with any of the Bangy RD guys?