Possible vacuum leak
Thread Starter
Instructor
Joined: May 2024
Posts: 216
Likes: 15
From: Uniontown Ohio
Possible vacuum leak
My tuner is trying to dial in my car but he suspects I might have vacuum leak based on the maf hz range car is idling vs other similar cars with same mods
big gulp
103mm tb
ported blower (jokerz race)
long tubes
mm catch can
I have full confidence in his abilities so I sm just looking to eliminate as many things as possible before he continues to dial the car in with these values
I am looking for suggestions on vacuum leak detections or something that is introducing more air then normal to the intake track,
when I added the catch can I also did some vac line rerouting do if someone has a schematic or detailed pic of 2019 z06 vacuum I would appreciate a peek at it
full disclosure I did the r and r on the ported blower and throttle body and big gulp myself
I have sprayed ether around all the intake and tb connections looking for engine speed changes but nothing noted
Thanks for any thoughts
big gulp
103mm tb
ported blower (jokerz race)
long tubes
mm catch can
I have full confidence in his abilities so I sm just looking to eliminate as many things as possible before he continues to dial the car in with these values
I am looking for suggestions on vacuum leak detections or something that is introducing more air then normal to the intake track,
when I added the catch can I also did some vac line rerouting do if someone has a schematic or detailed pic of 2019 z06 vacuum I would appreciate a peek at it
full disclosure I did the r and r on the ported blower and throttle body and big gulp myself
I have sprayed ether around all the intake and tb connections looking for engine speed changes but nothing noted
Thanks for any thoughts
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,564
Likes: 4,034
From: Cape Coral, Florida
If you have a vacuum leak your fuel trims will be elevated…if so run the engine at 3000 RPM for a few minutes and if short and long trims decrease you have a vacuum leak…this is engine diagnostics 101…as far as your MAF at hot unloaded idle (no loads) the MAF reading in grams/second should not be less than the engine displacement in liters.
Thread Starter
Instructor
Joined: May 2024
Posts: 216
Likes: 15
From: Uniontown Ohio
thx
Last night I ordered a smoke machine from Amazon will try that and if no luck try the leak detector
as with smoke machines there are many levels , what do you have, leak detector might have more uses in other areas
Last night I ordered a smoke machine from Amazon will try that and if no luck try the leak detector
as with smoke machines there are many levels , what do you have, leak detector might have more uses in other areas
