Got a Vac leak

**Z28boy2000** · 01-24-2010, 07:19 PM

well i was studying my data from my tune and i coulndt figure out why i had such high power losses after i installed my FAST 92/92....sure enough i have a vac leak somewhere (i hope the intake isnt cracked

) so now time to hunt for the leak, what lines should i be checking for and where should i be looking for a cracked line.

**Hi-Po** · 01-24-2010, 07:35 PM

Did you install the new lower profile valley cover bolts?

MAP sensor sits pretty awkward, did you make sure that didn't come out? I put a good solid bead of silicon on mine. Worked great.

Are you sure you have all the EGR hose hooked back up, and properly?

**Z28boy2000** · 01-24-2010, 07:49 PM

Originally Posted by Hi-Po

Did you install the new lower profile valley cover bolts?

MAP sensor sits pretty awkward, did you make sure that didn't come out? I put a good solid bead of silicon on mine. Worked great.

Are you sure you have all the EGR hose hooked back up, and properly?

Yeah I did the low pro valley cover bolts, I'm gunna check the MAP sensor, where did you silicone the sensor?

No EGR for me

**Hi-Po** · 01-24-2010, 07:54 PM

Originally Posted by Z28boy2000

Yeah I did the low pro valley cover bolts, I'm gunna check the MAP sensor, where did you silicone the sensor?

No EGR for me

I have been up for WAY too long. Don't know why I said EGR, meant PCV. My bad

I siliconed all the way around the sensor, let it cure for 5 minutes, then installed into the intake. I have had my intake off more times then I wanna think about, and its still in there firm.

Did you make sure all the intake runner gaskets were installed properly and not cut or ripped?

**Z28boy2000** · 01-25-2010, 09:48 AM

im gunna be pulling the intake off again just to double check everything, and ill defiantly be siliconing the sensor....i do have to check the PCV again but im pretty sure thats all good, but ya never know