Boost Leak from Throttle Body?
Nov 12, 2007, 08:13 AM
#1
Boost Leak from Throttle Body?
Anyone experience this? I did a boost leak test because I spike to ~20-21ish psi then slide down to ~15psi. Test found that I have a leak where the throttle cable attaches to the throttle plate. If I push up/down/left/right on this part I can hear the air coming out change, sometimes stop for a 1/2 second or so.(Not actually open/close the throttle)
Anyone else experience a leak at this point?
I am pushing/moving this part^^
Anyone else experience a leak at this point?
I am pushing/moving this part^^
Nov 12, 2007, 09:27 AM
#3
Oh yeah, it's typical. Very first thing I had to fix on my evo, just after bringing it home from the dealer. 
The parts you need...
http://www.worksevo.com/store/produc...roducts_id=415
And the writeup...
https://www.evolutionm.net/forums/sh...d.php?t=220264
The parts you need...
http://www.worksevo.com/store/produc...roducts_id=415
And the writeup...
https://www.evolutionm.net/forums/sh...d.php?t=220264
Nov 13, 2007, 05:59 PM
#5
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Has anyone ever done a boost leak test while holding the throttle OPEN? This is all that really matters. The throttle is never closed when there's full boost.
w8lifter21, do the boost leak test again with the throttle open. If it still leaks, THEN there's a problem. If not, then don't worry about it.
w8lifter21, do the boost leak test again with the throttle open. If it still leaks, THEN there's a problem. If not, then don't worry about it.
Nov 13, 2007, 06:29 PM
#6
Has anyone ever done a boost leak test while holding the throttle OPEN? This is all that really matters. The throttle is never closed when there's full boost.
w8lifter21, do the boost leak test again with the throttle open. If it still leaks, THEN there's a problem. If not, then don't worry about it.
w8lifter21, do the boost leak test again with the throttle open. If it still leaks, THEN there's a problem. If not, then don't worry about it.
Nov 13, 2007, 09:17 PM
#7
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With less then 3000 miles on my car my throttle body seals leakedt only 3psi opened and closed,replaced them with works 25psi seals and it holds boost way better.
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Dec 16, 2007, 04:25 PM
#9
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will there be a significant power loss with this leak. i leak tested my car and couldnt get passed 5 psi. it was coming out of the TB. Boost holds rock solid though?
