hondaracing1

my rear bumper is black like crazy from oil not just where the muffler is but all over the back.....i heard its from going into vtec cuz durin vtec it burns more oil is that true? like enough oil to be having my black bumper stay black

ARIZONA

If your engine is stock and not a B series or bigger, there is a problem.

hondaracing1

oh, well its a jdm d15b vtec, just got installed like 2 weeks ago......and the guy at the shop said thats what it is from but idk i sure hope so i mean it dont smoke or anything

b18bme

No that is def not right.

Street Ghost

I don't think you should be 'burning' oil when you are in VTEC.

Andres-eh2

couldnt it just be running rich?

ABK

it could be running rich but it has to be really messed up. you got any check engine lights, it's not supposed to burn or have anything black coming out of exhaust. What ecu are you using. Also get it comperssion tested. you should let some one drive it and see how much smoke comes out when vtec kicks in.

hondaracing1

no smoke, and the guy said that it was burnin of oil cuz vtec requires more oil, but my oil level hasnt gone down barly any

Uncle Ben

IMO vtec dosen't "burn" oil, it just requires it to function properly.

cookci

yes but i thought we established that these hondas "use" more oil when on vtec.

and isn't black deposits fuel! Surely if you zorst is pointing far enough away from the car then you wouldnt end up with cr*p on you bumper?

aznboysrfr

my cousin has the same problem ... except he has a jdm b18c (gsr spec, usdm ecu) swapped in his eg ... black smoke shoots out like crazy when he hits vtec at 6k

B18C5-EH2

Sounds like you're running rich and/or burning some oil.

You need to get an adjustable fuel pressure regulator and a V-AFC and hit a dyno with a wideband o2 sensor.

b16ahybrid

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cookci &raquo;</TD></TR><TR><TD CLASS="quote">yes but i thought we established that these hondas "use" more oil when on vtec.

and isn't black deposits fuel! Surely if you zorst is pointing far enough away from the car then you wouldnt end up with cr*p on you bumper?</TD></TR></TABLE>

Vtec = more lift and duration.Period
you shouldn't be burning oil vtec or not. Period

Look inside your exhaust pipe, it's all back rite it's called carbon.
Some is going to end up on your bumber regardless.
Most likely if your getting black specs on your bumper it's either
A: carbon
B: unburned fuel (rich condition)
I'm thinking it's probably a mix of both, since the engine is newly installed in your car it's obviously coming from there

I get black specs on my white bumper but I know it's due to my afr (rich)

xavior66

Wouldn't you run rich on a stock engine if you constantly used high octane gas? Like 93? Dumb question, I know, but just a thought.

92RED Hatch

probably.....unless you have a bad seal in your motor u shouldn't be burning oil...its carbon most likely

fresh251

I have a b16, and my friends say whenever I get on the throtle real hard and get into VTEC a little puff of smoke comes out of the exhaust, but that's just from running rich. My engine burns a little oil as well, but it has 103,000 miles on it. I agree that it's most likely just a bad seal. You have to be carful about loosing a lot of oil, it's very hard on your oil pump. If it gets to the point to when you stop at a traffic light and your oil pressure drops and your car stalls, that means your oil pump is gone because you've been working it too hard. This happend to my friend with a DSM (he had 2 bad seals), and I told him to stop driving it and replace his oil pump. But he didn't listen and the next day while driving it he threw two rods, tore up his cylinders, and meesed up a couple of pistons. Oh well, I tried to tell him.