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Thread: TB Boost Leak?

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Posts: 1-6 of 6
2012-10-05 02:31:05
TB Boost Leak?
Car was running funny where the idle would dip really low whenever i slowed down, so i went ahead and started leak testing the car. So far I found 2, the manual boost controller was leaking so I replaced it with a spare one, leak gone. The next one is a little bit more troubling, it seems to be leaking through the TPS sensor, which im guessing is seeping through the shaft seals in the throttle body. How do I even fix this? Ive tried searching but doesnt seem like anyone had this leak issue? Is this even repairable, or do i HAVE to get a new throttle body?
Last edited by akuma810 on 2012-10-05 at 02-31-47.
2012-10-05 02:34:31
they sell throttle body gaskets might want to start there
2012-10-05 02:51:38
its not the TB to IM gasket, its where the TPS mates to the TB. I feel the leak on the lower side of the TPS

OH i guess that can be confusing, im running hte outlaw VE thermal spacers, theyve only been on for less than a year, so the gasket is still fairly new.
Last edited by akuma810 on 2012-10-05 at 02-53-35.
2012-10-05 02:55:18
appears that EVOs have a solution, they are able to replace their seals.

MIL.SPEC HIGH Pressure Throttle Shaft Seals/100 Cell Cats are available - evolutionm.net

other nissans with this leak,

throttle body tps boost leak : RB20DET / RB25DET / RB26DETT Forum
2012-10-05 04:12:37
this rubber piece is bad, know where I could start looking for this?

How To: Throttle Body Rebuild / Disassembly / Assembly - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum
2013-01-08 14:55:39
have you happened to resolve the issue? i have the same problem and have not been able to find a solution short of people saying to buy another TB. in my mind that doesn't seem logical, as the next one may have or develop the same issue.

if i stop being lazy, i'll take mine apart and see if RTV can cure it.
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