Been driving the motor in the sig below. Pulled into the garage to do some tuning and pulled the intake tube. I found a huge puddle of oil on the outside of the TB plate.
Relevant info
The oil does not does not come from the oil filler vent hose as this hose is bone dry after installing a baffle in the valve cover. I the plug for #1 which was oily, and got 6% on the leakdown test (by this time the engine had cooled down quite a bit). The PCV valve is brand new.
Right now the plan is to have the heads looked over on Friday (I finally have a good excuse to use some of my sick leave!!!). Barring the PCV, valve guides are the only route for oil to enter the intake that I can think of. With 6% leakdown the PCV should be just fine.
But, I don't fully understand how valve guides can cause oil to pool at the TB. Could it have to do with the short runners and box intake? What engine conditions could cause this? Is there another possibility for the source of my problems?
I just rebuilt the motor for this problem, but had assumed it was caused by the 20% leakdown from low tension rings.
Assumptions
Relevant info
The oil does not does not come from the oil filler vent hose as this hose is bone dry after installing a baffle in the valve cover. I the plug for #1 which was oily, and got 6% on the leakdown test (by this time the engine had cooled down quite a bit). The PCV valve is brand new.
Right now the plan is to have the heads looked over on Friday (I finally have a good excuse to use some of my sick leave!!!). Barring the PCV, valve guides are the only route for oil to enter the intake that I can think of. With 6% leakdown the PCV should be just fine.
But, I don't fully understand how valve guides can cause oil to pool at the TB. Could it have to do with the short runners and box intake? What engine conditions could cause this? Is there another possibility for the source of my problems?
I just rebuilt the motor for this problem, but had assumed it was caused by the 20% leakdown from low tension rings.
Assumptions