The car under discussion is my 8th gen manual civic. The car was working perfectly fine until our recent trip to the northern areas. i will narrate the issues faced and would request your feedback:
On motorway, the car started puffing black smoke when pushed above 120km. Even on static position, one can see black smoke being emitted from the silencer.
One particular thing that has been there since the purchase is smoke emitted from the oil filler cap which is quite significant. i have had the PCV valve cleaned (not replaced) but it hasnt helped muck. The car is not reducing water but did reduce some oil on our recent trip to the northern side (approximately 1200kms).
We did conduct the compression test and the results were 175, 160, 160, 160.
Where i seek your advice is:
Is the compression alright for all the cylinders?
Why is the smoke being emitted from the oil filler cap?
There is some smell of petrol from the tail pipe if the car is sitting at idle?
Please note that the car was scanned properly and there was no issue with any of the sensors. Mechanic was of the view that the engine is weak which i am not willing to buy as the car packs a lot of power and does not show any such signs?
Xulfiqar, STR__GTR, capsat, would love to hear you guys specially. Everyone else is requested to spare few moments to share their views.
Thanking you guys in anticipation.