Damn Ka24e And Its Crazy Oil Consumption

[sil80forme]

OK i got this 89 240sx bout 3 months ago with rebuilt ka24e and p&p head, well when i first got it, it was great. now for some reason it burns SO MUCH OIL its rediculous and i dunno why. compression is good on all cylinders. lets see i put in a quart 2 days ago, drove bout 200 or soo, i checked it again today and what do ya know i need to add another quart. sometimes when i accelerate i can see a lil black smoke outta the tail pipe :wtf: anyone have any ideas or remedies. or should i just wait to put in dohc, whenever i get the harness and other stuff to do the swap. cause at the momment i am thinkING i am FUKED! :rl:

[sil80forme]

oh yeah there are NO LEAKS what so ever its dry as shit under the car

[s13irdie2]

mines the same way but it doesnt burn as much. i just ignore it and keep on filling oil whenever neccesary. mine doesnt have black smoke though. maybe a new headgasket would help?

[idlafie]

Check your spark plugs
http://www.bullittarchive.com/Maintenance/Reading_Spark_Plugs/
If they are clean, then you have a mystery oil leak. However if they are dirty, then it's either your valve seals or piston rings. Have you done a compresson leak down test??
http://www.geocities.com/dsmgrrrl/FAQs/leakdown.htm
Anyhow...hope this helps...
ID

[ledzeppelin240]

Valve seals would do it mostly on startup or after it has been idled for a while and then accelerated. The oil ring could be a possiblity as well due to it will not really affect the compression. The PCV valve can cause oil consumption.

[evilimport]

Add some Marvel Mystery Oil (red bottle) during an oil change, it fixes valve seals and a bunch of other things...Ive fixed a prob like this before (not my car, though) with this stuff and add some everytime I change the oil in the SR.