986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post

ike84 · 07-12-2021, 08:10 PM

Congrats on the steal! That's probably the cheapest a running boxster has ever sold for?

Oil in the intake is the classic sign of a bad aos. Two questions

The oil draining from the airbox - did this happen before you installed the new aos or after?

What brand aos did you install?

It is possible that the old aos flooded the intake with oil and you are seeing the remnants of this. I would disassemble the intake tubing from the airbox to the TB, remove the TB and intake plenum, and try to clean everything as well as possible. (Be careful with the maf) Don't remove the runners - that's a very time consuming effort and you can get your hand in there easily enough with the plenum off.

It is also possible that your new aos failed on first startup. It has happened before.

I will admit though, I've not heard of oil dining all the way back to the airbox. Are you sure of this? It's there oil on the filter? You can have a cracked fillerl tube neck that causes an impressive amount of oil spillage on top of the motor.

Last question - what does the smoke smell like? If it's sweet smelling it's coolant. If it's putrid it's oil. This is quite important as it will take you down two very diagnostic pathways...

Best of luck, keep us posted!

Sent from my SO-02K using Tapatalk

07-12-2021, 08:10 PM	#2
ike84 Registered User Join Date: Oct 2020 Location: KY Posts: 1,214	Congrats on the steal! That's probably the cheapest a running boxster has ever sold for? Oil in the intake is the classic sign of a bad aos. Two questions The oil draining from the airbox - did this happen before you installed the new aos or after? What brand aos did you install? It is possible that the old aos flooded the intake with oil and you are seeing the remnants of this. I would disassemble the intake tubing from the airbox to the TB, remove the TB and intake plenum, and try to clean everything as well as possible. (Be careful with the maf) Don't remove the runners - that's a very time consuming effort and you can get your hand in there easily enough with the plenum off. It is also possible that your new aos failed on first startup. It has happened before. I will admit though, I've not heard of oil dining all the way back to the airbox. Are you sure of this? It's there oil on the filter? You can have a cracked fillerl tube neck that causes an impressive amount of oil spillage on top of the motor. Last question - what does the smoke smell like? If it's sweet smelling it's coolant. If it's putrid it's oil. This is quite important as it will take you down two very diagnostic pathways... Best of luck, keep us posted! Sent from my SO-02K using Tapatalk __________________ 2000 Box Base, Renegade Stage 1 performance mods complete, more to come When the owners manual says that the laws of physics can't be broken by this car, I took it as a challenge...