Still plagued with a slight vacuum leak....

[vagike]

Can my runner flaps be a source of a vacuum leak on my intake manifold?

It is a slight leak because my partial fuel trims (Block 32-2) are 19-20%.

I've blocked off the PCV port, checked and sealed the IAT sensor port.... are the any other emissions ports that I should try blocking off?

Some thing that has contracted or cracked from the sub-zero temps.

 

[eurocars]

smoke test it

 

[mandowombat]

i have a small leak as well, but i think mine is coming from the over torqued Allen in the original DV location, causing a leak.

try rechecking all locations and if not, smoke test it. ^^^

 

[saddart]

since we are on the topic of boost leak. My brake booster is leaking air as i can hear it from my brake pedal. By any chance will that contribute to a boost leak also? Just wondering thanks haha.

 

[donjuan1jr]

Can my runner flaps be a source of a vacuum leak on my intake manifold?

It is a slight leak because my partial fuel trims (Block 32-2) are 19-20%.

I've blocked off the PCV port, checked and sealed the IAT sensor port.... are the any other emissions ports that I should try blocking off?

Some thing that has contracted or cracked from the sub-zero temps.

Off idle trims being that high is not a slight leak.

 

[vagike]

Off idle trims being that high is not a slight leak.

That is my thought too.. but the doesn't have a high idle, and there is enough extra fuel to speckle my rear bumper.

 

[vagike]

i think my air filter maybe be really dirty.

 

[obdboost]

i think my air filter maybe be really dirty.

Your fuel trims are showing ur running lean, mean you have to much air. A dirty air filter would allow less air in cuasing a rich mixture. Did u check the black vacuum leaks near th vacuum pump? I just had the same issue found my was a exhuast leak and my aftermarket intake

 

[vagike]

Your fuel trims are showing ur running lean, mean you have to much air. A dirty air filter would allow less air in cuasing a rich mixture. Did u check the black vacuum leaks near th vacuum pump? I just had the same issue found my was a exhuast leak and my aftermarket intake

When I pull my spark plugs, they are pig-rich black.

 

[vagike]

My air filter was cause of the entire issue.
I could not see light through the filter medium.

Oh well..... live and learn