hesitation/stumble *pics
#23
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haha, a 3 week wait, but im back on the net ;p
I went and resplaced all the O-rings on the injectors, and I get no stumble/bogging under boost anymore. My VAC is still at ~9hg, so I went and ordered an intercooler, and some piping, along with couplers and t bolt ****.
Well, I got everything installed, cleaned out any parts I re-used (BOV is questionable, many miles on it and I think it may be leaking) and bolted it all down, and took it for a test run.
Now I get a horrible whistle in boost, and it has issues holding boost... AKA Boost leak ?![](https://www.miataturbo.net/images/smilies/smile.gif)
I'm thinking it's this BOV, but I went and taped up the VTA/Recirc Port, and I've still got the horrid whistle ;p Is it the vac line-bov that would be leaking?
Guess I'm going to make a pass over EVERY vacuum line/charge pipe.
I went and resplaced all the O-rings on the injectors, and I get no stumble/bogging under boost anymore. My VAC is still at ~9hg, so I went and ordered an intercooler, and some piping, along with couplers and t bolt ****.
Well, I got everything installed, cleaned out any parts I re-used (BOV is questionable, many miles on it and I think it may be leaking) and bolted it all down, and took it for a test run.
Now I get a horrible whistle in boost, and it has issues holding boost... AKA Boost leak ?
![](https://www.miataturbo.net/images/smilies/smile.gif)
I'm thinking it's this BOV, but I went and taped up the VTA/Recirc Port, and I've still got the horrid whistle ;p Is it the vac line-bov that would be leaking?
Guess I'm going to make a pass over EVERY vacuum line/charge pipe.
#24
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
haha, a 3 week wait, but im back on the net ;p
I went and resplaced all the O-rings on the injectors, and I get no stumble/bogging under boost anymore. My VAC is still at ~9hg, so I went and ordered an intercooler, and some piping, along with couplers and t bolt ****.
Well, I got everything installed, cleaned out any parts I re-used (BOV is questionable, many miles on it and I think it may be leaking) and bolted it all down, and took it for a test run.
Now I get a horrible whistle in boost, and it has issues holding boost... AKA Boost leak ?![](https://www.miataturbo.net/images/smilies/smile.gif)
I'm thinking it's this BOV, but I went and taped up the VTA/Recirc Port, and I've still got the horrid whistle ;p Is it the vac line-bov that would be leaking?
Guess I'm going to make a pass over EVERY vacuum line/charge pipe.
I went and resplaced all the O-rings on the injectors, and I get no stumble/bogging under boost anymore. My VAC is still at ~9hg, so I went and ordered an intercooler, and some piping, along with couplers and t bolt ****.
Well, I got everything installed, cleaned out any parts I re-used (BOV is questionable, many miles on it and I think it may be leaking) and bolted it all down, and took it for a test run.
Now I get a horrible whistle in boost, and it has issues holding boost... AKA Boost leak ?
![](https://www.miataturbo.net/images/smilies/smile.gif)
I'm thinking it's this BOV, but I went and taped up the VTA/Recirc Port, and I've still got the horrid whistle ;p Is it the vac line-bov that would be leaking?
Guess I'm going to make a pass over EVERY vacuum line/charge pipe.
#25
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Join Date: Sep 2007
Location: Hampton Roads, VA
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Orings fixed ur Originall issue the bov is the source of your other issue probly or your IC piping etc. Is the bov closed fully when u have it sitting on the shelf? if it is just dont hook the vac line to it and it should stay closed leaving that out of your leak equation.
I did what you suggested, pulling the line from my BOV and capping that line end, and what do you know ;p The Gauge displayed ~20hg VAC
![](https://www.miataturbo.net/images/smilies/smile.gif)
The whistle has changed
![wink](https://www.miataturbo.net/images/smilies/wink.gif)
Last edited by gompers; 03-02-2009 at 09:37 AM.