kalildude

iTrader: (19)

What would cause excessive crank pressure? Pcv is perfect and if I leave the oil cover off it helps still lots of pressure and I also have a catch can. Any help will be nice?

kalildude

iTrader: (19)

ls1 with bolt ons 96mm typhoon intake, 102 tb, sd tuned, 104 lid, 1 7/8 headers, full 3 inch exhaust everything else stock.

kalildude

iTrader: (19)

Ive deleted pcv idle goes high. Ive routed pcv multiple ways the crank case pressure does not change. Removed the oil cap with and idle shoots up to 3000 tuned it with oil cap off. Is asking for stupid numbers to run even at 16.0 afr in the ve table. With oil cap off oil pressure is fine with it on, its extremely low until wot. Afr with oil cap on or off while regular crusing is fine until the car is shut off, then once started again idles rich around 11.5 afr then when driving is fine around 15.7 afr until about 3min in then its about 18-20 afr extremely lean but all wot is dead on at 12.8. ive checked for vacuum leaks already the old school way with the starting fluid but nothing was found. Only place I cant check is under the intake. Have not done a compression test. Ls1 style pcv, set up is damn near stock so it should work fine.

RockinWs6

!st thing to do is a leak down test.......will tell all.

HISS

iTrader: (52)

You say the idle shoots up when you remove the oil cap? That would indicate a severe vauum leak in the crankcase somewhere. What's wierd is you say your fighting crank case pressure though, sort of the opposite.

96capricemgr

iTrader: (1)

Just for giggles do a compression check on a few cylinders. 7 I believe is the most common to crack a ring land. Heck even just pull and inspect plugs to see if debris bounced off any.

kalildude

iTrader: (19)

I figured it out. there was a hairline cut in the pcv line. looks like a razor blade went through it. thanks for your guys help