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Once again - thanks everyone.. was very worried last night.. have calmed down a bit now.. as ImportAutoParts said - could be poor maintenence previously - or usage of average oil which wasn't cleaning it out properly.. I don't think it's blow-by as my understanding is this is caused by oil getting into the combustion chamber?? yes?? no?? if someone wants to explain feel free.. If this was happening it would be blowing smoke at idle possibly - I haven't seen any Blue or White smoke which would indicate coolant or water getting into it and also an oil leak - which makes me think the rings are still ok and the gasket hasn't blown.. Cheers Links

Thanks for the feedback people - after having spent all of last night and this morning both reading up and ringing people to find out different ideas i've formed some ideas, which can be seen in what you guys are also saying 2.. Bit of history first.. Car is 1998 - so it's only 7 years old, this is the first service it has had since owning the car - and the first oil change since it was complianced. I think the boost pressure is possibly inrelevant to the issue.. from people i've spoken to as well as Eli i've got the following: - Eli did a flush which should have cleared out anything in it (should have) - however i'm hesitent to believe this as some mechanics don't feel there is any need to do this. - The oil that was put in when complianced was probably of average quality and may not have been doing much in the way of cleaning carbon in the engine and was letting sludge just sit there.. - Car has probably been doing street driving in slow traffic which tends to lead to more carbon/sludge buildup.. - When the Penzoil has been put in the Cleaning properties of this oil - which i'm sure are quite good - have started stirring up & loosening any buildup.. - Combining this with the fact that it was driven on the weekend relatively hard (not bouncing it off the limiter at all - never would) but still high boost sustained for increased durations it has proceeded to gather alot more crap from the inside than what it would under normal driving.. This leads to where i'm at.. an engine full of carbon particled oil.. We don't think there is anything wrong with the engine as the oil has not changed it's consistency, it hasn't got any sludge clumps in it and is probably still lubricating - while doing it's job which is to suspend carbon particles rather than letting them settle.. My current choice of action is to a) drop it back at the Mechanics and get him to take a look at it or b.) keep driving it for about 2 weeks to free up any other buildups and blocks than dump the oil, change the filter and put new oil in. Currently this is what i'm leaning towards - and i'll probably be putting in Motul 8100 which is recommended on here.. Once i've done this i'll give it a week and monitor the oil.. now for the other things - brown smoke @ high RPM - we're puttin this down to running rich.. anyone got any ideas on what they think I should do??

my boost gauge measures in kg/cm^2.. so I use that..

Check out the service manual - pretty sure it has the amount required in it. Cheers oh - check out my sig to find it

I've decided to add a picture of the dipstick and what it looked like.. please - any help would be great people.. thanks Links not sure if this should be in Forced Induction or general Maintenance

Evening guys.. you don't know how much of a relief it is for the site to be back up and running.. Ok quick run down: Got my car serviced on thursday last week.. The engine oil was changed to Pennzoil fully synthetic 10W40 I do believe.. before this the colour was still translucent but needed to be changed.. Anyways - on sunday went on the cruise up to Avoca via Old Pac and on the way home a couple of people started noticing that my car was blowing Brown smoke when boosting & probably @ high revs. While I put this down to the car running rich - tonight I decided to check the oil as I hadn't looked since I had it changed. Pulling the dipstick out I found it was almost jet black - and not translucent. Intstant thought is Carbon (exchaust) has gotten into my oil and hence the colour of it. My reasoning for this is a) I was running ~10psi all the way up but was finding the car would R&R so I only maxed it out at ~7psi by controlling throttle until it was time to leave and I put it to 0.6kg/cm^2 or approx 8psi which is what the standard solenoid runs. Because of the drive home we were on boost alot - it could have been forcing exhaust gasses into the oil and also possibly blow-by (i believe) where oil gets into the cylinder and hence the brown smoke.. now.. after having checked some other threads and also other sites - some people have commented that blackness or carbon can be a) the colour of the oil B) the oil cleaning crap out of the engine block c) exhaust getting into the oil some how (which is what I think has happened) probably because of the rings maybe?? I'm going to be changing my oil probably friday night or saturday morning with Motul 4200 or 8100 whichever I get my hands on first as I don't think the colour of the oil is good.. I need to get some feedback from people on what they think it could be.. The oil is not translucent anymore it's got a slightly grainy feel and is pretty black.. Any help would be great.. i'm quite worried as I think I might have f**ked a piston ring in the process of having high boost or driving relatively hard.. Thanks Links

AUH-58N - Links

And MAR55S, I didn't mean to give you the finger... thought you were Links My bad... don't take offence Eh.. screw you .. ehehehe

I don't know that there is one translated into english..

Goto say - whoever was in the silvia - well done to them.. probably wasn't easy to keep up with us - gave him a wave as he pulled in though and I was heading home - didn't do too badly..

Welcome to the 40th annv club if it is one..

The M3 one is average - not as good as the original couple of getaways.. Personally prefer the porsche or the Supra + Escort one..

Lol - cheers elite.. if anyone has any new manuals they want added - please PM me.

I'll take you for a ride next time stan and you can listen to my beast.. I'm over it now.. just makes me chuckle everytime.. my mate and i were just laughing about it the whole way up.. Your SAFC2 could be helping to counter the issue..

I'd be interested to know how many of these people offering advice have actually imported through brokers before, or whether they're basing their information on what they read in here, which usually only gives one side of the story... I think that statement is almost as naive as what your implying.. After seeing the quality of the car Sewid imported i'd be leaning towards listening to the advice he's offering rather than assuming.. Anyways.. My main reasoning behind getting a car that is in Australia is that you get a chance to see it, touch it, drive it and generally get a better overall image of the car that you could be purchasing.. I'd definately check around here before importing - you may even find a better condition car for the same price that someone is trying to get rid of..

Sounds like it could be a common thing in skylines and prob turbo's for that matter.. not helped when it's a hot day either.. as it was on Sunday.. had all the windows down and sunroof open.. was still bloody hot.. what time did people hang around Avoca till?? Stan - how's that video coming along.. I wanna see - make sure you leave some sounds in the background, always nice to hear a turbo spoolin..

Get your coils packs checked aswell as your sparkplugs. Don't think this is causing the issuethat we are having, main reason we're driving popcorn makers is because of excess fuel (while running very rich) being dumped is igniting in the dump pipe when we back off the throttle from full boost.. cars aren't stuttering or suffering issues with ignition which is a normal indication of coil packs.. if it was a coil pack issue it would most likely be happening when it's wet or higher up in the rev range not 700rpm..

well sydney kid said it in about half the amount of words of me and probably about 10 times better.. so read his response

in an R33 full boost comes on by about 2,500/3,000rpm.. this is to do with the volume of air and the load that is going through the engine.. the higher the volume the quicker it will spool the engine up.. for a turbo to get going the engine has to have a fair bit of load on it so that the air will spin the turbo up to a high enough RPM to create boost which isn't till about 20,000rpm.. this is why in 1st gear you won't tend to make much boost as the volume + load isn't for a long enough duration to really spool it up till higher in the rev range.. by putting a higher load on the engine the car will dump more air + more fuel to get it going.. this air is what spins the turbo as it comes out - higher flow of air will spool it up quicker.. hope that helps.. probably not the best description..

Thanks Sewid - i'll take a look at them.. currently have to buy a couple of household things before the car gets any new items.. might just have to take it easy on the boost.. i'm gonna take out the O2 sensor and give it a good ol' clean and shake to see if it's still ok - it was working last time I had a consult cable in it..

It's currently running about 8psi I do believe.. I had it wound up to about 10/11 earlier in the day however it was hesitating quite badly which I think was probably rich and retard, as soon as I put it back down a bit it was happy to rev nicely all the way up.. anyone else got any ideas on what it could be.. maybe it's time to check the voltage on the O2 sensor and maybe look at SAFCII

scathing - what car were you driving.. sorry mate - just trying to find out.. ahhaha that's slack doodz.. but amusing.. so what happened - did you get a ticket.. he said to me and ed I think it was that "i've got a book full of red stickers in my car and I don't mind handing them out.. if you want I can start defecting and your cars will be going home on tow trucks, but I don't think you guys want that..".. oh well.. did he follow us to Avoca?

edit: were you in the 350Z scathing.. pretty sure when I was overtaking you it was prob in 3rd at about 6000 rpm.. so yeah.. wouldn't surprise me.. we were doing some great speeds through the hills with those bikes around.. Lol.. no worries guys.. thanks for the feedback.. Went for a spin before - doesn't look like it's on low throttle.. For the moment I won't worry.. looks like I could have been the only one doing it though.

lol.. I think that was me.. also managed to kill the spider that was climbing on your from one shoulder to the other before we left.. hope you had a good day enjoying getting driven around rather than you driving all day.. That damn water at maccas, was bloody room temperature so we spent the day hunting down cold water.. your car looked nice.. made a couple of pics in the carpark ..

Sure mate.. Sure.. nice meeting you btw.. Think i'm in the middle of havin a chat with you.. we managed to snare a fair few photos with our cars in them..