sir, how do we check compression. Is this a DIY or do we need to go to the service center?

Its not a DIY,It needs a Compression Testing Machine,Take the bike to SVC,they will check it for you.

Help needed- after washing bike yesterday when i opened the fuel tank,the outer coverin had water. the hole was logged and water was not going down & some water entered the engine. when i looked today the hole is still filled with water. what to do?

Sir I have one doubt can there be some glitch within the CDI causing this? rather than a loose contact. In that case what if a CDI replacement does rectify the fault? .

The thing is that I have faced the same exact problem Twice in my bike and it vanished when I cranked the bike after a minute or so. I didn't jiggle with the connectors at all. Then later only from your's and other experts posts I realized that it was a loose contact problem.

First of all soak the water inside the fuel tank ring area with some cloth.

The hole is connected to a rubber tube which is let down to the bottom of the bike. Seems like there is a block in the drain line.

Temporary instant relief

Try to disconnect the tube from the tank out let.

First remove the seat cover. Then u can see a bolt which attaches the rear side of the tank to the chassis. It is in front of the air intake compartment and is a steel bolt which is easily noticeable in the black chassis. .

Unscrew the bolt. Lift the tank there will be enough space to slide your fingers in. Search for a rubber tube( Its purely based on your touch sense and you can't see it) and disconnect the rubber tube. .

If you are not so good at DIY better take it to SVC they will do it( No change just the same method i stated above ). Its a 5 minute free of cost job .

Perfectionist method

The possibility of block is likely due to a bend on the rubber tube due to extra length. It happened to me anyways.

So remove the tank. Cut the extra length of drain tube. Reconnect it back to the tank water drain outlet. And there will be water inside the fuel tank ( obviously ). Before putting the tank back drain out the petrol. Well don't drain completely keep some 300 ml in the tank as water will be below that and if drained completely when refilling the water may again go inside.

Take out the tank remove that 300 ml fuel and water which is settled below it. Dry the tank for a day. Fix it back in the evening.

Peace of mind. No tank rusting. And no missing or chocking due to water in engine and carb later on .

The CDI in ZMA is made by Nippon Denso India,and is a Epoxy sealed unit...So no water or moisture ingress is possible.The unit does not contain any moving parts, only electronic components. Electronic components seldom recover from a fault condition except for thermal overload....
The connector pins are Silver coated and they get oxidized when exposed to moisture,and heat. It is this that causes the random loose contact problem. My doubt is that the connection to Ignition coil ,from CDI,which delivers the ignition pulse develops the loose contact,and the spark energy level goes down.So bike will start but cannot idle properly ,or accelerate since spark energy is poor...
I had corrected the problem in my bike .

Aneeshbro, Thanks for the information. the above was only for my knowledge. Not facing any issue with the bike at the moment

Knowledge upgraded. Happened twice to me so far. Since it happens to stay only for a couple of minutes it is quiet a livable problem for me. But people who are unaware of this and if this happens to them in a stranded place in the middle of the night will sure scare their guts out . And even SVC people will fail to find out this glitch often .

To all

After I changed my acc cable B. Seems like the bike got the crispiness back. I could surely feel the difference in pick up of the bike and its just awesome. . The throttle response change is clearly felt. Whereas earlier the bike had a lag in the beginning of opening throttle. And adding to that the bike doesn't knock even at 2.3- 2.5k rpm range. And it goes smooth throughout the rev range .

there is some vibration noise that comes from my bike, some metal like sound... its not always, just sometimes mostly when there are bumps... its not the bike stand... help please

CDI Issue.

The zma has a faulty unit. The rpm bouncing issue has happened on mine too. Goes away on its own. Its actually easy to overcome when you get used to it. once when sarin bro rode my bike the same happened he was terrified, the issue goes away on its own when the ignition is reset.

Drain tube issue.

No need to remove tank just remove the battery side panel and access the drain tube. The same was done to my bike during my 4th service. Due to constant removal of my tank for various reasons the pipe got pinched and hence lots of water got into my tank.

Sorry for the numerous grammatical errors, now at hostel and am posting from my Corby.

check the suspension

the suspension was touching the chain guard hence the noise...made the chain cover little away from the suspension...nw the noise is low but still it does exist...

By suspension you mean the shock absorber spring ? I think the center metal bush inside shock absorber mount rubber, is missing in your bike...otherwise there is no way the spring can touch the chain guard.

Can you enlighten me how and why the ZMA CDI is a faulty unit ?..and list out the various faults associated with it ?...can the ignition be altered in any way to give better performance ?

Took the bike to SVC today morning. To sort out the tack sound from handle bar, actually my cone set was loose and that was causing the glitch. He tightened it and gave back. A simple 5 minutes job.

And on the return way I felt that the handle is surprisingly stable than it was previously. And handle is stiffer now, in a positive way though . Nothing wrong I felt about it.

My mechanic checked the fork and all and came back and reported that no problem so I explained to him blah blah and he pressed the front brake and dived the bike 3-4 times and said its the cone set. And he adjusted it.

And its close to 10 months after i bought my bike and no sign of my goodlife card. So registered for it again today. This is the 3rd time I am doing it .