Found a huge vacuum leak. Probable cause?

[91CoupeMike]

Bag of dicks

[majorownage]

dowel pins

[BlueCoupeRedVert]

I say pull it and replace intake to head gaskets. The seal between block and intake just keeps oil in..

[greenbullitt]

You cant run an open filler vent and a factory pcv system.

[91CoupeMike]

You cant run an open filler vent and a factory pcv system.

I know it's ineffective.

[91CoupeMike]

I say pull it and replace intake to head gaskets. The seal between block and intake just keeps oil in..

Lol well shoot!

Wouldn't the pcv vac source pull vacuum on the crank case, making it a vac leak?

[greenbullitt]

I know it's ineffective.

ineffective isn't the word I was looking for. Its unmetered air, ie lean

[91CoupeMike]

ineffective isn't the word I was looking for. Its unmetered air, ie lean

True, I don't run lean though, it's 14:1 while cruising.

[garycrist]

I had a similar issue on my motor. The manifold required .090 cut on the intake side and .120
off of the base to let it sit down in the valley so it could be port matched.

[greenbullitt]

True, I don't run lean though, it's 14:1 while cruising.

don't mind me...you've got it figured out..good luck!

[91CoupeMike]

don't mind me...you've got it figured out..good luck!

Thanks for your help. I was just giving all the information I had.


But I guess me having information to supply irritates you to some point.

Whatever dude.

I have a innovate lc1 that's been on the car for a good while and never given me any problems.

Once again, the dfw mustangs guys know everything but keep it to themselves and didn't offer 1 bit of useful advice.

[YALE]

Don't get testy. Greenbullitt is right, dude. Running an open breather and a pcv is like poking a hole in your intake. You might as well not even have a hose between the intake and the valve, and just run it with the nipple open.

[94mstng94]

True, I don't run lean though, it's 14:1 while cruising.

Leaks behind the throttle body, the intake, do not affect air/fuel while cruising.

[racrguy]

Thanks for your help. I was just giving all the information I had.


But I guess me having information to supply irritates you to some point.

Whatever dude.

I have a innovate lc1 that's been on the car for a good while and never given me any problems.

Once again, the dfw mustangs guys know everything but keep it to themselves and didn't offer 1 bit of useful advice.

14:1 IS LEAN

Mike, you need to eat a snickers, you aren't paying attention again.

[racrguy]

Leaks behind the throttle body, the intake, do not affect air/fuel while cruising.

Uh, dowhut? Any unmetered air will affect a/f