Alpine951

My inttake is pressurized because I am looking for leaks. I can hear it hissing near the throttle cable but can't see any bubbles when i spray it.

Ian Carr

Is the Vacuum line on the bottom attached and not leaking?

87uk944t

Maybe the o'rings in the throttle body are shot, mine was leaking blowby oil into the tps, you can get reseal kits from paragon or bruce arnn for next to nothing

schnellfahrer

I tested mine a few days ago. I have a leak from one of the seals/orings on the "rod" near the spring.
The amount of leakage varied in relation to the angle of the throttleplate.
I ordered a reseal kit from arnnworx.

Alpine951

Vacum line is attached and not leaking. Sounds like I need a reseal also Eivind.

eniac

This is exaclty where I found mine to be leaking just this morning. I had to replace the large o-ring seal that was leaking badly, still heard hissing, found it to be leaking on the "rod" right by the spring, guess it's a reseal kit for me also.

Tomas L

My guess is that the throttle shaft seals (I don't think the stock ones are O-rings) have a normal lifespan of 15 years or so. It seems that most 951:s need new seals.
And since the seal kits are cheap and the work involved in changing them is not that difficult I suggest changing them just in case.

87uk944t

The seals in mine broke up into little bits when i tried to remove them and it was a PITA getting all the bits out, i would imagine that most are hardened like this now and sealing very little