Possible Vacuum Leak with BBK SSI manifold...

[jfl330]

I have been tracking down a vacuum for a couple of weeks. I bought the car it had the BBK SSI and 80mm TB on it. I found a few glaring issues I fixed and am trying not to pull the intake off.

I removed the cover plate on the egr hole (which I don't have, '02) and found the oring that should seal the plate to the intake does not fit right (see photo).



Do you think that this could be a potential vacuum leak source? The groove is ~ 0.170 deep and the oring is 0.130 thick.

If anyone has a BBK SSI and no egr, could you pop the plate off and see if the oring makes a good seal?

Thanks.

Jon

[Knight]

It could very well be the source of your vacuum leak. To confirm, put the cover plate back on, spray a little starting fluid around the area while the car is running. If the idle raises, you've found the leak.

[transamtom]

Fill that gap/ring with some RTV sealant and bolt it back on.

Let it dry for a day and all should be well.

[jfl330]

Fill that gap/ring with some RTV sealant and bolt it back on.

Let it dry for a day and all should be well.

I sent that pic to BBK, they said they have never seen the groove cut that deep before. They said same thing, fill with RTV and cover it up.

Jon

[transamtom]

I sent that pic to BBK, they said they have never seen the groove cut that deep before. They said same thing, fill with RTV and cover it up.

Jon

Just shows I give some pretty good advice

[KMdef9]

If this didn't solve your leak issue, it could be a PVC leak.