white and black smoke

[camshaft]

guys :_:...i'll be really grateful if u could help me on this...I'm driving EK4 B16A auto...last week..on my trip to air papan beach,mersing...when i rev up my car to take over a bus or lorry several times...my friend behind me..driving a wira says he saw a white smoke...and sometimes black smoke coming from my exhaust when i was revving up the car...

from what i know...the (black smoke = fuel to to rich) and (white smoke= head gasket problem)..the problem is..the smoke sometimes white..sometimes black...so i'm a little confuse...can u guys give any comment on this...:retarded:

 

[Sato]

Perhaps it means both too rich fuel and head gasket problem ? Hehheheee....

 

[J101]

lets assume its a stock engine ek4 b16a auto. the weather, the high revving and allot of things may contribute to black or white smoke. since u said "sometimes", it could be anything from valve seals to piston rings. if you have not done an engine complete ovehaul for a 10 year old engine, probably its high time.

 

[camshaft]

overhaul?? aiyo...my pocket empty...gonna go check the car this saturday at my mec

 

[lcliang85]

i hav face tis prob at my working work shop. ecu ,map sensor or fuel regulator prob.u need 2 check at work shop la.