Here is the situation.
Every two to three weeks I make a highway trip about 300km one way (600km round trip) On the last trip I burnt 1/2 litre of oil going down to the city. I topped up the oil to the full mark and then drove home (another 300km) I let the car sit for about 1/2 hour then I went out and checked the oil (car is parked on flat surface) and the damm thing was full still.
I'm like WTF is going on? I would have expected to be down maybe another 1/2 litre or so. I wouldnt have suspected but it to be full. I know in the city the car doesnt burn any oil b/c I check it regularly. But it seems to at high speed on highway trips.
I was talking with a guy and he said that it could be the EGR isnt letting the proper crank case ventilation. It could get plugged up or no function properly at highway speeds so that could cause oil usage. But it kind of seems inconsistant.
I thought they stopped EGR's in late 99? I checked gmpartsdirect.com and they dont list anything for 00+. I looked under the hood but I couldnt see one. I know what they look like but are they hidden somewhere?
Ive heard that the 2.4L's are bad for using a little oil but why is it so inconsistant especially long highway trips. The car has the GM S/C kit on it and just rolled over 150,000km.
any thoughts?
NeoJuice wrote:I was talking with a guy and he said that it could be the EGR isnt letting the proper crank case ventilation. It could get plugged up or no function properly at highway speeds so that could cause oil usage. But it kind of seems inconsistant.
no.egr has nothing to do with crankcase ventilation. also:
Quote:
I thought they stopped EGR's in late 99? I checked gmpartsdirect.com and they dont list anything for 00+. I looked under the hood but I couldnt see one. I know what they look like but are they hidden somewhere?
is correct. you car does not have egr.
Quote:
Ive heard that the 2.4L's are bad for using a little oil but why is it so inconsistant especially long highway trips. The car has the GM S/C kit on it and just rolled over 150,000km.
any thoughts?
my thought is, look for leaks. crawl around under your car, look for wet spots. look for dirt deposits. look for anything out of the ordinary. if you cant find any leaks, check you oill separator (since your car also doesnt have a pcv valve.)if none are present, check your oil daily for a few weeks. look for patterns in useage. keep a log of how you drive vs. amount of oil consumed. other than that, cant really help too much.
JBO Stickers! Get yours today!
oil separator? please provide a picture if possible.
its on the backside of your engine (i think, i've never had a 2.4). one of the 2.4 guys could probably provide a picture.
JBO Stickers! Get yours today!
Rich Grayo Jr. wrote:its on the backside of your engine (i think, i've never had a 2.4). one of the 2.4 guys could probably provide a picture.
Front side, under the intake manifold.
FU Tuning
John Higgins wrote:Rich Grayo Jr. wrote:its on the backside of your engine (i think, i've never had a 2.4). one of the 2.4 guys could probably provide a picture.
Front side, under the intake manifold.
I didnt see anything when doing the S/C install, there is no erg valve as far as I remeber. Here are my S/C install pictures (see link below). I thought it was the PVC baffle under the old intake manifold? I replaced that with the new parts with the S/C kit. Could that be my issue?
Here is the link to the S/C pictures
http://www.j-body.org/forums/read.php?f=46&i=335304&t=306379&p=1
Again, you're right there's no EGR valve. If you look at your pictures showing where your intake manifold came off and look to the right of the block you'll see a 1/2" hole (with three tapped holes around it). That's where the EGR would have gone if you owned an older car. This port is now blocked on the back side of your block by the either header gasket or not connected if a stock exhaust manifold is used.
If you replaced the sparator with new parts from the kit I don't see why you would run into an issue. Since I don't have the SC kit on my car I'm not too sure what the new parts are. But with this said so long as you followed the instructions I don't see why you would run into an issue. In case you're wondering the separator is simply a filter to catch the oil vapour being emitted from your crank case vent.
Like Rich said I would keep an eye on your levels and have a look for leaks (if you notice anything dropping). Just a stupid follow up question but did you take your baseline measurement on level ground too?
Im keeping an eye on my oil levels. I always make sure that I'm on level ground when I check it. There are no leaks. I do my own oil changes and there are no leaks or oil sweats underneith the car.
There is a tube from the PVC baffle that goes up in front of the throddle body into a black spacer that comes with the kit. I might remove the hose from the black spacer and put one of the little K&N filters on the end of it then just block off the spacer hole. Here is kind of a bad pic so you get the idea. Its in the botton of the picture, you can see the black spacer with the hose the runs into it.
With a little K&N filter on the end of the hose, would oil escape from the little filter? Maybe a Catch can instead?
That hose (the one that goes to the black 3" or 4" metal tube on your intake) is the one from the oil/air separator. The black plastic part on the front of the block you removed and replaced with a metal one is what they're talking about.
I found, with a K&N filter on there, that I lost MORE oil than I used to with the 2.4L. At least, with it attached to the intake, it would put the vapours back into the engine... but it somehow kept the oil in the engine where it was supposed to be.... putting a K&N on there made it worse, with and without the GM supercharger kit.
I've found most, but not all, 2.4L's I've owned have "eaten" oil on a regular basis. I have no idea where it goes... but I always kept an eye on it. I would consider your car normal...
Thanks John, Your always a wealth of information.
Regards,
NeoJuice wrote:John Higgins wrote:Rich Grayo Jr. wrote:its on the backside of your engine (i think, i've never had a 2.4). one of the 2.4 guys could probably provide a picture.
Front side, under the intake manifold.
I didnt see anything when doing the S/C install, there is no erg valve as far as I remeber. Here are my S/C install pictures (see link below). I thought it was the PVC baffle under the old intake manifold? I replaced that with the new parts with the S/C kit. Could that be my issue?
Here is the link to the S/C pictures
http://www.j-body.org/forums/read.php?f=46&i=335304&t=306379&p=1
I was referring to the PVC baffle not EGR.
FU Tuning
Check the oil pressure sensor. Mine was going through oil and the was the problem.
http://myspace.com/mia831
check the valve cover gasket.. spark plug area common problem on 2.4s
Mia Bevacqua wrote:Check the oil pressure sensor. Mine was going through oil and the was the problem.
My car has been using a bit more oil than normal as well. How does the pressure sensor cause the problem?
Mia Bevacqua wrote:Check the oil pressure sensor. Mine was going through oil and the was the problem.
I would like to know this as well. Please explain.
As for a response to Jonathan, There is a tiny bit of sweat under the 2.4 cover but no leaks or puddling.
Well I dont have any leaking. This weekend I made the 600km trip again. I checked my oil tonight and it's only down slightly. Not enough to be worried about. I checked it when I got home from work tonight. It was maybe down 1/4 litre or less. It was just below full. From what I have heard from many people with 2.4's is that they are oil pigs. They will usually use 1-2 litres between oil changes.
I found the Oil pressure sending unit on gmpartsdirect.com for $22. But how come the poster hasnt given an explanation on how this relates to oil usage?
I couldnt find anything on google relating to the issue.
