Solution to leaking map sensor o-ring?

[s4avant87]

Performed a boost pressure test. Weak point is map sensor o-ring. Sensor is brand newish with o-ring.

Seems like a very poor design overall, guess that's what makes the metal throttle body housings so attractive.

Anyone have a simple solution? New o-ring? Thicker o-ring? Double o-ring? Quadruple o-ring?

[xRenesis]

thicker oring + lube. another one is you can try adjusting the bracket, if the bracket is canted a bit the oring wont seal right.

[s4avant87]

thicker oring + lube. another one is you can try adjusting the bracket, if the bracket is canted a bit the oring wont seal right.

Thanks for that. Actually discovered the adapter bushing inside the tbb had no o-ring at all. I must have never gotten one when I bought it so never thought twice until now. Got a fatter one from Ace hardware and now it's all good. Now I have leaks all over the plumbing and coming to realize that most worm gear clamps are absolute garbage. It never ends.

[james 408]

yeah just use the standard screw clamps, nothing too wide, and use a stock style tbb. there's a lot of 3rd party fixes that unfix this area real quick -- most, if not all, are complete garbage downgrades.