Throttle body air leak...Pics inside with how to fix!!!
Well mine is holding almost 24psi now with no leak! I guess the o-ring did the trick. My boost still sucks and I'm getting blowby on the test now. I believe this could be because the motor isnt TDC but I'm not sure yet.
The ones pictured from MachV do look a great deal like the NAPA ones. The ones I received from MachV were brown and their design looked different from the ones in your post justchil. What are the specs on the injector o-ring you used?
I used one of the small red o-rings from the injectors.. slide it on the shaft all the way to the end that holds the throttle cable. It made the C/E clamp a lot harder to get in but somehow.. someway it sealed!
This is in addition to the green seals I got from Machv. I wouldn't really advise doing this but it is working for the time being.
This is in addition to the green seals I got from Machv. I wouldn't really advise doing this but it is working for the time being.
I knew it would come back to haunt me.
Pulled all the injectors last night and found a couple torn o-rings.. I was one short cause I used it for this
TB still doesn't leak tho
Pulled all the injectors last night and found a couple torn o-rings.. I was one short cause I used it for this

TB still doesn't leak tho
DO NOT I repeat DO NOT attempt what I mentioned above. I drive 5 hours today to get to Norwalk for a private rental and my TB is sticking like crazy. Again DO NOT do what I did lol
**** and this is under nicks account this is justchil
**** and this is under nicks account this is justchil
I got mine put in this past weekend. Figured Id do it while installing the clutch. It wont be running until next weekend. So I dont know if it did the trick. But the old seals were not in the greatest shape. Thanks again for the writeup!
I didn't realize it at first but they caused the end of the shaft to stick hour just a hair more... the plate just barley touching the inside of the TB. It didn't start sticking til about 4 hours into the drive to Norwalk. I said screw it and bought a BR ported throttle body which is P.I.M.P
So far I think it's badass. Seems more responsive than stocker... looked like some sort of metal bearings or something that were in place of the seals. It's a totally different shaft/plate/etc.
I can feel a little something on the butt dyno but no real proof... I bought the ported manifold too but need to install it. I had to add a little fuel in the high load/high rpm range on the way home.
I plan on posting up a full review within a few days... 8-10hrs of driving and I'm seeing things lol
I can feel a little something on the butt dyno but no real proof... I bought the ported manifold too but need to install it. I had to add a little fuel in the high load/high rpm range on the way home.
I plan on posting up a full review within a few days... 8-10hrs of driving and I'm seeing things lol
Ok so the Buschur ported TB leaks WAY worse than the stocker ever did
I can't even do a leak test it leaks so bad... I guess I'll have to find something to cap off the UICP so I can test the rest of the system.
I can't even do a leak test it leaks so bad... I guess I'll have to find something to cap off the UICP so I can test the rest of the system.
The SKF brand oil seal, part number 3930, size 10x14x3 offered by NAPA is what I've been replacing leaking oem throttle body shaft seals with in cars that I see. None of those cars have had symptom one of a leak ever since. I replaced the seals on my car with those from Mach V and like you, have developed a substantial boost leak only allowing me to hold 19-20 psi as of last night. The seals I purchased from Mach V were brown and looked considerably different from the ones I have been using from napa. The napa seals also fit MUCH better. What color are the seals that you have received from Mach V?
Well, i have tried to get that part numbers.







