Blue Smoke On Startup..

[wehrmacht]

Hey guys I have a sniper classic 4yrs old, I just can't figure it out even my mechanic about the blue smoke on startup. even when we change to a new bore kit, piston & rings and brand new oem valve seals.. still the blue smoke exists, any of you guys experience the same?

 

[Stockbore]

i'm experiencing the same and up to I still couldn't find the answers. i'll just say maybe its moisture

 

[Francisco N. Maristela]

it's the exhaust pipe or AIS.

 

[ambokz]

can I post my problem here too?my bike is all stock,now after our ride last week, my friend told me that there's a white smoke that comes out everytime I make arangkada/almosat full throttle (dunno the english term of it.sorry, poor me).hehehe..what causes it?thanks in advance masters.

 

[Francisco N. Maristela]

Blue smoke - Oil burning (i.e. Piston ring)
White smoke - Water Burning "Steam (i.e.Head Gasket )
Black Smoke - Rich mixture/unburnt fuel (Ignition,A/F Mixture and etc.)
Red Smoke - Ghost Rider Mode

 

[ambokz]

so for my snipey white smoke, need to change the head gasket?as per my friend mechanic piston ring.

 

[Francisco N. Maristela]

Bro, sometimes if the piston ring isn't worn that badly, it would be whitish blue. If it smells like burning oil, it is your piston ring even if the smoke looks like white (All of us are color blind) HEHEEHEHEHEHE.

what appears to be white smoke from the exhaust that will disappear after the vehicles engine has warmed up to it's normal operating temp.. This is a normal reaction called condensation... condensation is the result of a small amount of water/dew being drawn into the exhaust usually collecting in the muffler and/or the catalytic converter and is caused by our friend mother nature..... like when you see your breath on a cold day...

 

[wehrmacht]

Blue smoke - Oil burning (i.e. Piston ring)
White smoke - Water Burning "Steam (i.e.Head Gasket )
Black Smoke - Rich mixture/unburnt fuel (Ignition,A/F Mixture and etc.)
Red Smoke - Ghost Rider Mode

is this possible even if it's new piston/rings & block?

 

[Francisco N. Maristela]

is this possible even if it's new piston/rings & block?

yes Sir. Below are the reason
1.) Defective/improperly installed new piston, piston rings and engine block - improper break in, prolonged high RPM on break in period, using synthetic oil on break in (Glazing of Engine Oil in the walls), poor quality piston, piston ring and block.
2.) Oil leaking past the exhaust valves - true for system with AIS if AIS is contaminated with oil through the Air Filter.

One scenario for your sir is this...

You experienced blue smoke, oil seeped in the AIS and Air Filter, you replaced your Engine (Block, Piston and Ring) but you didn't clean the AIS and AIR Filter system causing the blue smoke.

Hope that helps. All this experience is from 10 years in Car Tuning. Dont trust your mechanic immediately without diagnosis. A well maintained Sniper can run 100K kilometers without consuming oil.

 

[ambokz]

I'm getting confused,sorry newbie here with regards to our engine....mine is,the white smoke will come out only when I rev not really a full throttle (e.g. overtaking another vehicle)...btw my snipey is all stock (engine & pipe).

 

[Stockbore]

I'm getting confused,sorry newbie here with regards to our engine....mine is,the white smoke will come out only when I rev not really a full throttle (e.g. overtaking another vehicle)...btw my snipey is all stock (engine & pipe).

sounds like either a piston ring or valve seal problem sir

 

[Stockbore]

I'm getting confused,sorry newbie here with regards to our engine....mine is,the white smoke will come out only when I rev not really a full throttle (e.g. overtaking another vehicle)...btw my snipey is all stock (engine & pipe).

sounds like either a piston ring or valve seal problem sir

 

[ambokz]

ok, I'll have it check soon.thanks master

 

[Francisco N. Maristela]

valve seal...

 

[ambokz]

update as of,snipey is in the Operationg Room...hope it'll be ok soon..thanks masters..

 

[wehrmacht]

yes Sir. Below are the reason
1.) Defective/improperly installed new piston, piston rings and engine block - improper break in, prolonged high RPM on break in period, using synthetic oil on break in (Glazing of Engine Oil in the walls), poor quality piston, piston ring and block.
2.) Oil leaking past the exhaust valves - true for system with AIS if AIS is contaminated with oil through the Air Filter.

One scenario for your sir is this...

You experienced blue smoke, oil seeped in the AIS and Air Filter, you replaced your Engine (Block, Piston and Ring) but you didn't clean the AIS and AIR Filter system causing the blue smoke.

Hope that helps. All this experience is from 10 years in Car Tuning. Dont trust your mechanic immediately without diagnosis. A well maintained Sniper can run 100K kilometers without consuming oil.

hmm for the AIS I disabled it long time ago sir, your number 1 post makes me think, i'm guilty on improper break in... maybe i need to change piston & rings and see..

anyway i meet another mechanic and ask the same question, he said that probably the valve guide is the culprit or the intake/exhaust valve needs replacement, is this possible sir?

 

[Francisco N. Maristela]

sir, going back to your original problem which is blue smoke on startup. Blue smoke is caused by burning oil, i think you got a good mechanic.

if valve guide is defective (on intake or exhaust), oil can seep in the chamber and burn oil coming in from the top not at the bottom (oil piston ring leak). It can also be the reason.