KnuckleZ

My ITR is burning oil like crazy. The thing is that during normal driving (low RPM's), there is no smoke coming out whatsoever but when it hits VTEC I can see a cloud of black/grey smoke. Is that a sign of bad oil rings or could it be anything else? I know it could be running too rich but it wouldn't burn oil in that case. Any help would be great. Thanks guys.

Nick M

Oil is blue

KnuckleZ

I thought about that but there are no leaks. So I know it is not leaking. What could it be?

cartune network

did u do a leakdown test or compression test on the motor?

there is a number of things that could be wrong.

u could have bad rings, bad valve seals, bad head gasket.

do the tests and tell us the results.

u could be running really rich too.

KnuckleZ

Compression is good. Car still pulls hard. I just don't know what's wrong with it. I'll see what can I do and let you guys know. Thanks

cartune network

no problem. how many miles are on the motor?

KnuckleZ

93,000

cartune network

when was the last time u did a full tune up?

KnuckleZ

I bought the car with 89,000 so all I've done so far has been timing belt/water pump, spark plugs/wires and oil changes. That's it.

cartune network

thats good though. most people neglect alot of that stuff. hows ur o2 sensor?

KnuckleZ

Haven't checked. Could it be a timing problem?

cartune network

could be. cause if ur o2 sensor isnt working ur gonna run rich.

KnuckleZ

I wouldn't doubt it. My gas mileage is kinda sucky. But why am I burning so much oil?

cartune network

that im not too sure about. u could have bad valve seals or u could be getting some blow by. im not sure.

kevinz

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KnuckleZ &raquo;</TD></TR><TR><TD CLASS="quote"> My gas mileage is kinda sucky. </TD></TR></TABLE>


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KnuckleZ &raquo;</TD></TR><TR><TD CLASS="quote"> What could it be? </TD></TR></TABLE>


sounds like you are burning more fuel than oil

KnuckleZ

Yeah probably, but I'm still burning oil which is not good anyway.

goforbroke

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KnuckleZ &raquo;</TD></TR><TR><TD CLASS="quote">Compression is good. Car still pulls hard.</TD></TR></TABLE>

Did you actually do a compression test? Even if the car pulls hard that doesn't mean anything. What were your compression numbers?

KnuckleZ

I don't remember the exact order but they all ranged from 195-210 across.

sohctodohc

welp i have a b16a in my car and it never smoked until i hit vtec and thought i was burning oil like crazy but turns out it was gas and my ignitor was going bad and it was running good but getting shitty mpg. u migt try that fixed all my problems

KnuckleZ

So what did you end up doing to it?

sohctodohc

getting a new ignitor

KnuckleZ

I'll check that and the O2 sensor as well.

sohctodohc

Your o2 will most likely throw a code. Do you have any missing? does it have a rough idle? watch your tach closely, as if it is ignition related your tach will act as if its possessed. As far as burning oil, most likely its either a worn oil ring, a damaged cylinder wall or your valve guides/seals.

This is my brothers name, but I've done alot of work on his car and actually put his engine in.

Oil consumption comes from several things, but 1 quart 2500-4000 miles is VERY common. As well, if you are not burning an EXTREME amount of oil and its just a worn oil ring, you will not loose power. As oil burns as well, and there is no loss of compression because the whole purpose of your oil ring is to scrape the excess oil from your cylinder.

Basically, check everything in your ignition system for your rich problem. Your burning oil, inspect your plugs for signs of oil residue, if there is none, and its running good, live with it, otherwise it will cost you more than its worth.

The only other thing I can think of that would cause oil in your cylinder is PCV system or your intake sucking oil from your valve cover into your intake tract. That can be seen by just removing your intake and inspection your throttle body. There will be oil buildup or residue there if thats the case.

Hope that helps, I know its a little crazy and spread out, but that is everything it can be. If your that concerned, do a leak down test, that will 99% confirm it is not your valve guides/seals. Then go from there.

Personally if the spark plugs were not getting fowled, it was running top notch, and was not consuming more than 1.5-2 quarts in 4000 miles I would live with it, that is not all that bad. Ford states (how I know I have no clue) that 1.5-2.5 quarts every 3000 miles is within specs and normal... so if that makes you feel any better.


Jerod

KnuckleZ

Thanx a lot for your time. My idle is not acting crazy. The only thing I could say is that sometimes it'll go up to like 1500 and stay there for a couple of seconds and then back down to about 850 or 900. The intake system is fine because I checked and cleaned the TB. One thing I noticed when I changed the plugs was that plug 1 and 3 were missing almost half of the side electrode and kinda "whitish" color. I guess too hot? Now about the oil, the car is burning at least 1 quart in less than 1000 miles especially if the engine hits VTEC.

Any help would be great. I need to get this fixed and I would take it somewhere to get it checked but I'm just trying to narrow it down and save some money if possible. Thanks a lot.

92eg6

iTrader: (1)

bump for u..i have the same problem on my lsvtec but i think it has to do w/it not being tuned...runs fine but it throws clouds of black smoke while in vtec..it also has a crappy idle and shuts off on me sometimes.