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**drvmtm** · 04-01-2011, 10:23 PM

Originally posted by ceasar View Post

^ 8-9 turns? how much mileage do you get?

this no_of_turns varies from bike to bike?

in the manual it is said to have 2-3 turns.... mine(180) at 3.75 turns.... confused.

see its all upto ur engine condition tuning,the rule of thum is dont disturb the carb if you r happy.
i get 30-34 on city ,nd 40-50 in highway.

**princesirohi** · 04-02-2011, 12:38 AM

now after incresing the turns from 4.5 to 5.75, engine overheating problem is reduced but it now gives 35-40 kmpl only

**ceasar** · 04-02-2011, 03:41 PM

Originally posted by drvmtm View Post

see its all upto ur engine condition tuning,the rule of thum is dont disturb the carb if you r happy.
i get 30-34 on city ,nd 40-50 in highway.

yes,you own p150 and 30-34 is kinda low ain't it?

Originally posted by princesirohi View Post

now after incresing the turns from 4.5 to 5.75, engine overheating problem is reduced but it now gives 35-40 kmpl only

yes obviously,the more you turn the less mileage your bike will return,
my guess
@4.5 you had overheating issues and mileage was 40 so not normal for a p150 this means you were laready running rich and by turning one more tun you made it even more richer...
so the best way is to start from scratch...
try 2.5 first and 3 and progressively increase your turns and check the mileage........
make sure you do the tuning process right.... i usually do a 15 km speed run before tuning...i set the rpm at 4K and while turning the screw slowly i constantly examine the changes in the rpm ,after reaching the checkpoint i examine the rpm for atleast 2 min to make sure the needle absolutely still and above the initially set rpm.

ps: i had the same problem of overheating after the SC fiddled with my carb, it took me 3 weeks to set it right again with trial and error method.

**drvmtm** · 04-03-2011, 01:18 AM

Originally posted by ceasar View Post

yes,you own p150 and 30-34 is kinda low ain't it?

correction - i own a p 180 ug 2 edition.

**ARNandal** · 04-03-2011, 02:27 AM

Originally posted by princesirohi View Post

now after incresing the turns from 4.5 to 5.75, engine overheating problem is reduced but it now gives 35-40 kmpl only

PRINCE:
If it is just reduced and still persists...
Check the ignition timing... i think overheating can occur if ignition timing is disturbed, or in other words..if the rectifier in the cdi has gone wrong....
the capacitor can discharge current to ignition coil prematurely...
This will either let the spark plug to function for a more period of time..
or sometimes can let both the spark plugs work for a longer period of time...

Which will then make the fuel burn more faster hence causing overheating due to running lean...and this substantiates low mileage and your greyish white spark plug.
Itz just my perspective....
Debate over it and validate...

And again pulsars as far as i have found has less reliable cdi's...

**princesirohi** · 04-06-2011, 05:01 AM

@ drvmtm and others: delay in posting spark plug pics was because i was out touring with my wife ( 3 days approx - ashtavinayak + shirdi) as mentioned in my previous post. then again went on an 2 day tour with my inlaws ( this time on scorpio ), so whole week went in touring. i am posting my spark plug pics. these were taken before carb adjustment i.e. when engine was overheating. there are two pics of each plug from two sides. please notice that plug is brownish on one half side and white on other half side. this was when VC screw was at 4.5 turns. now i have kept it at 5.75 turns and overheating problem is vanished. solved, even in scorching sun. however, now it is only giving 35-40 kmpl.

also discussed with my mechanic. he again examined the bike and noise. he apologized for not checking thouroghly earlier and accepted that the noise is from crank and not knocking.

one more thing i have noticed is that after changing the VC setting, the bike is a bit sluggish in midrange.

**pavanchirmade** · 04-07-2011, 08:51 AM

What a blur! Man focus on the tip and then shoot

**princesirohi** · 04-09-2011, 11:34 AM

can somebody give any opinions.

**ceasar** · 04-09-2011, 11:57 AM

@prince that pic is too blurry .. one cannot make anything from that pic ,as pavan said focus on the tip and then shoot. Seems like you've used mobile camera ,use a digi cam if possible.

**NANOtechnology** · 04-09-2011, 01:50 PM

@ prince

as your saying that the plug was a bit brownish from one side and white from the other side, that happens because it gets washed in that direction as the intake port is pointing that white direction directly.

and BTW, your running lean, the plug color should be chocolate brown in color, you don't need to click any more pictures.

and ask your mech, that the noise from the crank if not termed as knocking, then what is ?

BTW, here are the pics of my spark plug, when it was running lean, as well as when it was running A PERFECT state of tune.

this is when it was running lean

and this is when it was perfectly tuned.

I hope you understand the difference.

**drvmtm** · 04-09-2011, 09:56 PM

Originally posted by NANOtechnology View Post

@ prince

as your saying that the plug was a bit brownish from one side and white from the other side, that happens because it gets washed in that direction as the intake port is pointing that white direction directly.

and BTW, your running lean, the plug color should be chocolate brown in color, you don't need to click any more pictures.

and ask your mech, that the noise from the crank if not termed as knocking, then what is ?

BTW, here are the pics of my spark plug, when it was running lean, as well as when it was running A PERFECT state of tune.

this is when it was running lean

and this is when it was perfectly tuned.

I hope you understand the difference.

nano one picture for you,
I BOW TO YOU FOR YOUR ALL ROUNDER PERFORMANCE!

**NANOtechnology** · 04-10-2011, 03:13 AM

@ doc

You are a legend doc, the reason i learnt all the stuff, i should bow to you, not you.

these pics are just reference of my plug for prince to know how a lean and perfectly tuned mixture can be read on the plug.
Its no rocket science.

@ prince

The top pic is the one which was clicked when the engine used to heat up the bike more than normal.
i guess this sorts out your heating problem once and for all.
get your plug color to the one in the below pic, and you will be settled down once and for all.

**abhijeet080808** · 04-10-2011, 09:06 AM

^^ Nano - Is it possible he need a colder heat range plug?

**Drifty** · 04-10-2011, 10:19 AM

It is wiser to go with the stock spark plug heat rating.Changing the heat range will only add to the problems.

**psr** · 04-10-2011, 12:21 PM

Originally posted by abhijeet080808 View Post

^^ Nano - Is it possible he need a colder heat range plug?

Going to a colder plug than stock is recommended only in cases where the compression or CC increase,or super/turbo charging of the Engine is done.
Otherwise it will lead to plug fouling,since it will not be operating in the self cleaning temperature.

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