Knock knock, its detenation any one there???

[psycho6cyl]

Car will show knock after 10 psi and sometuimes when i let my foot off gs on boost.. Where to go what to look for???

 

[notacarlo]

Are you leaning out at 10 psi? or over rich?
Scan tool numbers?

You should see a little when starting up.

We need some 02 numbers.

dan

 

[psycho6cyl]

Knock

im a lil afraiud to run it up there again i dont wanna blow head gasket.. w hat else should i look for

 

[notacarlo]

What is your fuel pressure set at? (idle)

What kind and how old is the fuel in the car?
How old are the plugs?

You would be detonating because of a lean condition or sometimes over-rich. Most likely lean.

Without 02 numbers it is hard to tell.

Do you have a scan-tool?