Re: hunk oil leak not reflected in oil level indicator

Topic Approved.

Strange. Could it be that you are measuring the oil level immediately after riding the motorcycle? But, this can give only slightly inaccurate results.

And I think you might have to post a picture of the leaking place, because "near the cylinder head" doesn't give a correct idea of the place.

Re: hunk oil leak not reflected in oil level indicator

There are other ways as well for engine oil to disappear that just leaking out, and that is burning. Your bike is burning oil for some reason. Part of it can be normal during summers, if the burn rate is slow (you do not see blue smoke from exhaust and exhaust tip is oil free). If this is the case then just change your oil to another with a higher flash point.

Are you checking oil levels properly? You have to warm up the engine, idle for 5 minutes, turn off engine, set bike on centre stand, open oil port, wipe dip-stick and then put it back into oil port and lift back up WITHOUT SCREWING IT IN and then check oil level. If you screw the dip stick in then that is wrong method. If you do it on cold engine that is also wrong. If you do it on slope then that is wrong and stupid. If you do it with engine running then that is only stupid.

I hope that you are checking oil level properly. Unless the oil is leaking so much from the head gasket that it is dripping when you park it overnight, the gaskets are not the culprit, there is some other reason. Also just as a side note (and only partially related), make sure your crank case breather tube is clean, empty & free of oil.

Re: hunk oil leak not reflected in oil level indicator

remove the dipstick, wipe it with a clean cloth, insert again and take out, now measure the oil level---- are you doing like this.

Re: hunk oil leak not reflected in oil level indicator

Hi, thanks for the replies.
Yes I check oil level, as suggested. Come home after 20min drive, wait for 2min and check with dipstick without screwing it in, on centre stand on flat ground and rear wheel touching ground. Even today, it showed exactly upto maximum mark, but I am pretty sure it is less in reality as I can see oil dripping on ground for past 15days. was not able to remove drain bolt as mech fit it too tight. So could not measure exact quantity.
1 month back roller arm went kaput. I thought because there was less oil due to leakage. That time also dipstick was upto max level. got bike serviced, put new oil castrol 20-40, complained to mech of leaking oil, he changed the main gasket on cylinder head. Will upload the pictures in a few hours. Few days it was not leaking, went for a 500 km trip. As soon as engine became hot, after 50km drive on 70-80kmph, oil was spraying all over my leg and even on pillion riders leg. So I bought a new can of oil and kept on topping up every 100 km . This time the dipstick showed correctly as level was decreasing. Once back to city riding, it dosent leak so much but leaks. Dipstick remains static on max level. Will upload pic.

Checked spark plug. Itis running slightly leaner. No oil deposits near silencer end. No smoke. Got the oil filter cleaned on last service. Haven't cleaned centrifugal filter.

My question is, oil leaks purely because of bad sealing or because of some increased pressure it leaks even from good seals? Mech said internal screws are all tight. I mean no loose screws.
Second, on that long trip, bike was struggling to go past 80kmph unlike earlier times. Does oil level have a part to play in this? Inspire of top ups every 100km?
Third where is crank case breather tube? how is it related to my problem
Forth, could there be a block in the oil pump line and hence dipstick shows wrong reading.


June 1st week I am planning a Kashmir to kanyakumari trip on this bike . So got to rectify soon and feel confident. Will post all pics in a few hours. Thanks.

Re: hunk oil leak not reflected in oil level indicator

First of all you are using wrong grade of oil as recommended is 10W 30 or you can go to 10W 40. 20W 40 is twice as thick as the previous oil. Thicker oil will cause high pressure as oil is circulated by pump and thus will cause rupture of oil seals. Also the thicker oil will damage your roller bearings as oil takes longer to reach head. Extreme/hunk pump is different to unicorn and runs much tight tolerance to pump 10W 30 oil. Second of all castrol oils are known to vaporise under sustained high pressure runs. use other oil like veedol or motul or shell and use 10W 30 or 10W 40 and see the difference. your bike will easily cross 100 kph and in 20w 40 oil bike struggles to rev.

Third check your dip stick if it is faulty, compare with another hunk and check if level indicator is correct.

Those of you have travelled in ambasador or marshal or old model vehicles would have seen that there is an oil pressure gauge. If slightly thicker oil or more oil is added then the gauge register higher reading. it was a means by which drivers knew if right grade was there and also right level was there as low level will show less pressure readings. Alas such a vital instrument is now redunant in cars.

Re: hunk oil leak not reflected in oil level indicator

Man, this is some weird situation. I think spark plug + exhaust indicate that oil burning is not an issue. And if the bike is spraying oil while running then it is obvious that oil loss is due to leakage.

I think the first thing to be done is pin point where is it leaking from..!! Get the bike washed properly with a pressure wash. Tell the guy to clean off all oil with diesel first and only then wash. It is important that you clean off all oil, even that which is dried off between the fins. For this let the engine cool down, spray WD40 where ever there is oil on the fins (diesel would also be fine) and then wash with pressure wash.

After that park your bike over night and see where the oil trail is starting from. If the oil does not drip to the ground then that means that the problem is in the head area and leakage only happens when the engine is running and oil is being pushed to the head. This will narrow down your possible reasons drastically and may be point towards a solution.

I am suggesting this because I am not sure if the gaskets are the culprit. Unless you determine the location of the leak you will never be able to solve this problem.

Re: hunk oil leak not reflected in oil level indicator

uploading images.

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I uploaded the pics . these are the pics of the enine oil leaking areas. after checking the level with dipstick (see pic-3 ) I drained the oil completely and measured it. aprox about 600 ml only drained. though it was very dirty and dark, I added another 400ml of fresh oil to make it 1 litre total and re-poured everything into the engine. went for a small 1 km ride to circulate the oil and then measured the dipstick again (pic 5). now I am doubtful if the dipstick is the original one that came with the bike. it is likely that a mech might have interchanged it with some other bike's dipstick. hunk owners please compare with your and let me know. after that, I cleaned the engine bay completely with kerosene to get rid of the spilled old oil. have parked it on centrestand and will wait and see tomoro morning if any seepage is there again or not. (I feel it wont seep until I drive it). hope the pics will help u understand the problem. thanks for the replies.

• You are speculating that the oil is low, even tho the dipstick is telling otherwise. You are over filling and unnecessarily changing gaskets.
• Measuring used oil is incorrect method.
• Calibrate your bike's dipstick by putting fresh 1 litre oil (from a standard 1 litre pack of any oil manufacturer and not a water bottle) and use that reading as future reference mark!

Re: hunk oil leak not reflected in oil level indicator

I totally disagree with you muztarik. Sorry.
Contrary to what u say I think 1 liter of water or oil or any liquid will be the same when measured in a bottle, irrespective of their density. Remember we are measuring volume here. Volume will remain same for all liquids. If density is different, their weights will change but not volume. So a 1 liter of oil will be same when measured in its own company can, or in waterbottle. Yes the weight of 1 liter water is different from weight of 1 liter engine oil. Not volume. Some one please correct one of us as we are contradicting each other on this issue.

coming to my bike problem, last time the mech drained old oil and poured 1 liter oil from original can in front of me. And still oil leaked. So it is not a case of overfilling then. This time I drained old oil into bottle only to take a picture to show u guys. Now don't tell me that 600ml (in water bottle) is actually 1liter of oil in reality.

Re: hunk oil leak not reflected in oil level indicator

Ok. But the thing is I have done about 350km since the last change done by mech, and now I have oil around the engine and my trousers. and I have drained about 600ml using waterbottle. Is it not a thing to worry?

Re: hunk oil leak not reflected in oil level indicator

update: yesterday i was cleaning and checking for oil leak points and i found out that one of the cylinder head scerws from where oil is leaking is loose. i tried to tighten it but found out that it was not getitng tight as the threading is spoilt. and hence it was slipping. also the place from where it is leaking is also right below that area of the screw. wonder why none of the mechs told me about it.
however i have now found the reason for the oil leakage- a slipping cylinder head screw.
what are my options now?

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this screw is slipping. and hence it ia also leaking from gasket underneath it.

Re: hunk oil leak not reflected in oil level indicator

The best option and permanent solution. For this is to change the bolt stud. For this the engine head has to be opened.



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Re: hunk oil leak not reflected in oil level indicator

Hello,

I also have problem with my Hunk,which struggles to go past 80km/h.I got the problem solved lately and also the bike is now very smooth,What I did was just change the spark plug with apache spark plug (bosch twin electrode spark plug).Now the bike cross 80 at ease and the fuel efficiency has increased since then.Alos after installing the new spark plug the cold start prob,em has gone.
Regarding Engine oil I am using Servo fully synthetic oil.

Hope this might help.

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Yes I have the same dip stick.