I have a 06 Chevy cobalt ls with the 2.2l ecotec I recently put a turbo on it was pushing 8 psi when I origanally turboed it it was pushing 80 psi oil pressure cold at idle I have had it turboed for about 3000 miles maybe a Lil more just city driveing not for long periods of time then I started it recently and only 40psi cold at idle start when I rev it it easyly gets past 60 psi but I don know I was planing on rebuilding it full internals but I don wanna have this issue after the rebuild any info to what u think is loosing my oil pressure I think I could have messed up my bearing cleareances but not sure anyone had this issue??

 

And that's cylinder head pressure

 

cylinder head pressure reads lower. it doesn't sound like you have an issue at all. you really should be getting oil pressure readings from the block

 

I talked to vince from trifecta Tuneing he said is sounds like I do have an issue but I don know what

 

Same oil?

 

What oil? With hard use some crappy oil cold have had viscosity break down in the 3k miles with a turbo car. Viscosity breakdown would cause lower oil pressure. Change to oil and see if the pressure goes back to normal.

 

What he said. Definition of pressure is the resistance to flow. Higher viscosity higher pressure. I deal with this on an everyday basis being a plastic engineer.

 

I changed the oil full mobile 1 synthetic and Lucas oil stabaliser changed the oil filter and changed the feed to come from the block hope that helps I have never had a low pressure light go on but the guage reading scared me

 

Low oil pressure light is at 8 psi. Its the "you're already fucked" light.

 

I bet well now I just tried to start my car after all that stuff and it will not start it sounds terrible Idk what's wrong

 

Is it ticking? Sound like a diesel? What?

 

No ticking or knocking but it just started to rev when I started it so I killed it but Idk should I just say **** it and start my rebuild early? And tear it apart? And check my bearing cleareances

 

It just started to rev? vac leak

 

No vacuum leaks I put that thing together too many times I went over everything