I have a JDM B16A that I've been running for about 6 years, and about 2 weeks ago it started smoking and burning oil really bad. I had a check engine light that turned out to be distributor related, and I fixed that problem but the oil consumption and smoking is still there. My car lays down a blue smoke screen every time I accelerate or decelerate like a 1972 hooptie wagon. It is using over a half quart of oil daily.

I did a compression test and all 4 cylinders are actually reading right at 240 psi (all within 1 or 2 psi of each other). They build up quick too, so my theory about rings, valves or the head gasket is out the window.

Anyone have a suggestion, or a similar experience?

Thanks in advance.

 

A compression/leakdown test WILL NOT indicate the condition of the oil control rings.

Do you see where I'm going with this?


.

 

When was your last oil change? But in the event that there is something more drastic at hand...

A compression test is not as accurate as a leak down test. A leakdown test can help you determine where your problem rest in terms of whether its your piston rings, valves/valve seals, or head gasket. In the event that you don't have a leakdown tester available, one way to check your rings is to do a baseline compression test (just as you did) and try it again but pour a small amount of oil in the combustion chambers just before you run the test. If there is a significant increase in the reading then it is your piston rings.

PS. There is no such thing as a JDM B16A2. B16A2's are USDM.

 

Considering the volume of oil I am burning, do you think it is more likely to be the oil control rings vs. something like valve guides?

Thanks for the correction on my engine type...I know it is JDM because I had to flip the wiring harness when I put it in, but for some reason I always thought it was an A2. Maybe because it was supposed to have been out of an SiRII.

Your replies are much appreciated.