Pressure testing intake
Thread Starter
Cruisin'
Joined: Oct 2002
Posts: 9
Likes: 0
From: Philadelphia
Pressure testing intake
Greetings all,
Quick question....I am doing some intake leak testing using Dwayne's test adapter (Thanks Dwayne). I hear a hiss from somewhere in the center of the manifold/engine. Hard to pinpoint and it does leak down to 0 very quickly. Before it runs down to 0, I also noticed that when removing the dipstick or oil fill cap, pressure releases. My question is...is this normal? Will there be pressure in the crankcase from pressurizing the intake? Thanks much!
-Ed
Quick question....I am doing some intake leak testing using Dwayne's test adapter (Thanks Dwayne). I hear a hiss from somewhere in the center of the manifold/engine. Hard to pinpoint and it does leak down to 0 very quickly. Before it runs down to 0, I also noticed that when removing the dipstick or oil fill cap, pressure releases. My question is...is this normal? Will there be pressure in the crankcase from pressurizing the intake? Thanks much!
-Ed
Team Owner
Joined: May 2004
Posts: 31,166
Likes: 4,161
From: Philly PA
if your pressurizing the intake note that the MAF boot has a line that goes directly to the crankcase,
this will let the pressure leak out quickly with the dipstick pulled out or the oil fill cap loosened.
Also the brake booster should be removed from your test as you will be pressurizing it instead of applying vacuum.
this will let the pressure leak out quickly with the dipstick pulled out or the oil fill cap loosened.
Also the brake booster should be removed from your test as you will be pressurizing it instead of applying vacuum.
