Oil problems....
11-12-2007, 05:18 PM
#1
12 Second Club
Thread Starter
iTrader: (7)
Join Date: Oct 2005
Location: Englewood, CO
Posts: 1,018
Likes: 0
Received 0 Likes
on
0 Posts
Oil problems.... ok, heres the deal. i have a 99 ls1 z28 cam and nitrous only. the car has 120k on it and has been driven pretty hard. the car has always burned oil, but lately its been burning quite a bit. when i start the car grey smoke comes out the pipes. i have no cats, but that shouldnt matter there. is this a sign of bad rings? also, lately my oil pressure has been lower than it used to be. around 43-45 WOT, and below 40 at idle. if i spray to like 80mph and let off, the oil pressure goes WAAAY down to the mark before 40. im guessing the pump is going bad, its the original one. i think there are couple of problems, bad rings, and a bad pump, but what do you guys think?
11-12-2007, 05:21 PM
#2
TECH Senior Member
iTrader: (23)
Join Date: Aug 2005
Location: Watertown, NY
Posts: 8,797
Likes: 0
Received 0 Likes
on
0 Posts
45 at WOT is dangerously low. Sounds like the pump may be going bad. As for the burning of the oil, I would start with the PCV valve since that is common for it to allow oil into the intake. You should also do a compression test to check the condition of the piston rings.
11-12-2007, 05:50 PM
#4
12 Second Club
Thread Starter
iTrader: (7)
Join Date: Oct 2005
Location: Englewood, CO
Posts: 1,018
Likes: 0
Received 0 Likes
on
0 Posts
I am running 5w30. i was thinking that psi was too low as well, especially when it falls way down after a spray for whatever reason. are there other reasons for having low oil pressure than the pump, say, a shitty engine?
