Air coming out of the oil cap. What could be the reason?

rehman1078 (rehman1078) 2014-11-15 16:57:39 +0500 #1

Assalam O Alaikum

I have recently purchased a Toyota Prius 2011 model. The car is around 87k on ODO.
Today when I just opened its oil cap to check whether the engine has blow or not, I was quite shocked to see a noticeable amount of air coming out of the oil cap with very few oil drops coming out of it.

The engine oil of the car has been changed before 1000 km and personally I dont really have any trouble with the drive. It runs like a new car Alhamdolillah but the engine sound is more prominent and not smooth like a Honda Civic 2010 (my previous ride).

Please help me out that what could be the possible reason of this blow & should I be worried about it or not?? Because right now I am quite worried & thinking to take it to the showroom to sell.

I am curiously waiting for the kind reply.

Regards.

SOLUTION

axe.effect (axe.effect) 2014-11-15 19:03:37 +0500 #2

Check blowby at optimum temperature. There is blow at idle in almost every engine. But there should not be blow above 2000 rpm. Clean PCV valve.

Test engine compression if you are that much worried about engine.

rehman1078 (rehman1078) 2014-11-16 00:48:51 +0500 #3

Thanks..
How to check engine compression?

Xulfiqar (Xulfiqar) 2014-11-16 20:46:16 +0500 #4

air blow from fill cap at idle speed is normal in your case.

rehman1078 (rehman1078) 2014-11-17 14:10:56 +0500 #5

Thanks bro...am relaxed