Hey Everyone,

I have a 2000 Yellow ITR with a brand new motor (from warranty) that's only about 1/2 year old. Today when driving in front of a friend, he noticed the some black smoke when VTEC enganged. I've heard that VTEC causes oil to burn. Is this true, and if so, how much is typical?

Thanks for helping a newbie.

Eric Lee 303

1994 Supercharged 4AGZE Toyota Corolla
2000 Yellow ITR
1993 Integra RS


[Modified by ericlee303, 3:51 AM 9/24/2002]

 

i'd go back and get the motor inspected for leaks and compression.

 

black smoke is more likely soot. not smoke

 

The Acura RETARDS told me that 1 quart every 1000 miles is OK.

fuggin incompetant morons... ill never trust them to even change the oil (which they have screwed up so many)

 

I think a little smoke in vtec is okay. How much are you burning?

 

Tell you the truth, burning oil is usually indicated by bluish/white smoke from the exhaust and it tends to float in the air for a while. Black is more of running rich than burning oil.

 

LOL. 1 quart for a 1000 miles?!

 

I don't think it's much, but you can apparently see it when VTEC kicks in. Thanks.

 

I can only assume you don't check the oil level on the dipstick yourself? If you do, how much does it burn. I honestly wouldn't be surprised with 1 qt every 1000 miles with a POS oil like Mobil 1 Hell I know of an R that burns 1 qt every 250-350 miles without vtec and it runs fine

But most likely your car is just running rich.

 

I know it burns some because I have to top it up once in a while, but I just didn't think that you would be able to see anything coming out of the tailpipe.

 

I'm only used to seeing black smoke coming out of my boosted Corolla...I always run my SDS programmable ECU a little rich during high boost just in case....

 

Ive been told the same about mine. I wouldn't worry about it.

 

Well I've seen ITRs hit around 12:1 A/F at the top end, which is pretty fuggen rich for a stockish c5. What kind of oil do you use? My B18C1 burns -0- oil with some oils and lots of oil with others.

 

4 stroke motors shouldnt burn any amount of serious oil. Just a very very small amount. Certainly not 1 quart every 1000 miles

 

I put in full synthetic Quaker State. What kind of oil do you recommend for the C5?

 

So the C5 sucks then? I've heard of many, many people burning 1 qt every 1000-1500 miles. I honestly would NOT be concerned with that kind of oil usage, maybe it SHOULDN'T burn it, but I wouldn't care if it did.

 

Stupid me, what am I talking about (having a Monday moment). Of course black smoke means running rich. But the car is definately consuming oil.

Here's another tidbit of info I found on vtec.net:
-------------------------------------------------------

You should also check your O2 sensors. While the ECU should identify problems, its possible something isn't working right. An overly rich misture will also cause black smoke and carbon buildup. Additionally, most Hondas run rich at high rpm under WOT and this will show up as some balck smoke (light amounts) near the rev limiter.

Some of us S2000 owners have noticed that synthetic oil cauxses reduced gas mileage and an increase in carbon buildup on the tail pipes. We're continuing to study the issue and will publish a report soon, but if you're using synthetic, you might try changing back to regular oil.

Finally, get a compression and leakdown test run. If your rings or valves are haivng problems sealing, this will show it.

SC

 

I always suggest Castrol GTX. But use what you are comfortable with. You will find a few people here that have noticed reduced burning/oil loss by switching away from Mobil 1 but I don't recall anyone discussing synth QS before.

 

Thanks man.

 

black = rich

white/blueil

He is fine.

 

I wonder how many of these B18's burning oil are regularly warmed up and cooled down? I got harassed for treating #9 like a turbo car, but that bitch never burned a drop in 26k miles, 10k of those miles with Spec B's. Mobil 1 since the first change.

Just a thought.

 

Pat: I never do that with mine, and it doesn't burn a drop... Oh I did get that "no oil in the filter" thing the other day though that you had on your roommates car.. but i'm not 100% sure it didn't just drain.. I was being lazy (go figure) so it was draining awhile..

 

stock, my itr ran 10.1 on dyno a/f meter

 

my car has never burn oil, and let me tell you I don't baby it either. I don't BEAT the hell out of her either but I do drive it like an R is supposed to be driven

 

My ITR burns oil like there's no tommorow. Most people that I know (and I know a hell of a lot) that have ITRs loose a lot of oil during "spirited" driving.