B18C7 into GSi

[rc_]

Just a oil consumption issue I've noticed. I'm using a lot of oil, probably added around 500ml to 800kms so far. Seeing it's the first run since the engine has sat for 10 months I thought I'd just use GTX2 then dump it at 1000kms and refill with something better.

The exhaust is leaving residue on the rear bumper. Black soot. Doesn't feel oily, more powder like. Plugs burn a nice grey on the electrode. Fuel economy is 8L/100 around the city. Starts with no smoke and doesn't blow any on just revving on the drive on a warm motor. Not sure when it's up and revving hard at speed.

Engine is very smooth and delivers nice power.

The catch is I have an engine light coming on at 3000rpm and I haven't connected up a electrical plug at the rear of the engine which I have been told is some type of emission control as my GSI didn't have anything for it. Could this be the source of my oil usage.

Compression test upon purchase of engine recorded 255psi across all cylinders.

Did you witness the compression test?

The black residue is from running rich, it is excess fuel not oil. Get rid of the CEL first then start troubleshooting if it is still an issue.

Also get someone to follow you when your car is warmed up at WOT. When I was burning a lot of oil I could only see smoke from the exhaust at high rpm gear shifts.