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Frustrated! Vacuum Line

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Old 08-13-11, 06:13 PM
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Frustrated! Vacuum Line

Ok so I've gone over all the maps and I seem to have a heck of a time finding one last line....

I have gone through all the diagrams and they are very helpful, but I still can't track this one down that's listed below... Help!!



I have the PCV to the oil filler neck (about to put a catch can in, though..). Another quick one, when I put the catch can in, should I just cap off the UIM port and do I still need the inline catch tank (it seems to be leaking).

I have the next orange line (top right) to the solenoid which goes to the catch tank and the green line goes down to the hard lines behind the alternator. I just cannot find where the blasted red wire goes!!!

One thing that looks a bit odd, however, is that the hose going to the actuator (double throttle control on the back of the UIM) doesn't have a check valve in it. I'm guessing they just put the text in a bad spot and it doesn't need it.. It's going to the right most nipple on the back of the nest, though.

Any help is GREATLY appreciated...
Old 08-13-11, 07:43 PM
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I'm also considering just saying screw it and going to the simplified sequential. Any input in regards to the benefits / issues of the change?
Old 08-13-11, 09:36 PM
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Don't see what's that difficult, it goes from the UIM to a check valve then to the first solenoid in the rack. Maybe post a picture of what you have?

Dale
Old 08-13-11, 11:17 PM
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Yeah I probably need to. It doesn't SEEM difficult, I just can't find an open nipple to plug it into!

I am going to check one more thing tomorrow morning to see if I can figure it out. If not, I will post a pic.
Old 08-14-11, 04:10 AM
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Originally Posted by Leetfade
Yeah I probably need to. It doesn't SEEM difficult, I just can't find an open nipple to plug it into!

I am going to check one more thing tomorrow morning to see if I can figure it out. If not, I will post a pic.

If you cant find an open nipple to plug it into, then you might have 1 hose plugged into the wrong nipple, and thats when things get confusing. I had that same problem with mine. Post up some pics
Old 08-14-11, 07:32 AM
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Nope, figured it out.. One of the nipples on solenoid G broke off in one of the hoses.... *sigh*

Looks like I'm going to modified sequential today! At least that's one of the ones that gets deleted... :-/
Old 08-14-11, 10:11 AM
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The evaporative emissions system (including Evap purge solenoid and charcoal canister) is a separate system from the crankcase ventilation system. Don't get them confused. The double throttle uses a check valve because the actuator runs on vacuum.
Old 08-14-11, 10:33 AM
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I really don't mean this to sound rude (as I'm sure it will), but what does that have to do with this? I just want to make sure I'm not missing something.. That is one of the solenoids that gets deleted in this setup.



I went and bought some more vacuum hose, vacuum t's and caps and am, more or less, just going to tear it all out and do all new hoses on it.
Old 08-14-11, 11:56 AM
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Soooo yeah.. apparently those solenoids get pretty brittle as a few more broke just from basic pulling of hoses... *sigh*

Anyone have a good source for solenoids or is it pretty much just through the dealer?
Old 08-14-11, 12:24 PM
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I ordered a couple (solenoids) from malloy mazda. they have great prices!
Old 08-14-11, 12:33 PM
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Thanks!

I am now debating non-sequential and just being done with it.. I will def keep Malloy Mazda in mind! I found some decent prices at Mazdatrix so I'll just compare the two if I decide to stay sequential.
Old 08-14-11, 12:39 PM
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Make sure you check the shipping charges too. I know Malloy is pretty cheap on shipping. Some companies try and screw you on shipping.
Old 08-14-11, 01:27 PM
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Originally Posted by Leetfade
I really don't mean this to sound rude (as I'm sure it will), but what does that have to do with this?
Re-read what you wrote...

Originally Posted by Leetfade
I have the PCV to the oil filler neck (about to put a catch can in, though..). Another quick one, when I put the catch can in, should I just cap off the UIM port and do I still need the inline catch tank (it seems to be leaking).

I have the next orange line (top right) to the solenoid which goes to the catch tank and the green line goes down to the hard lines behind the alternator.
The catch tank is for the evaporative emissions system, which is separate from the crankcase ventilation system. A "catch can" is used for the crankcase ventilation system and has nothing to do with the OEM "catch tank" for the evaporative emissions sytem. Installing a catch can has no effect on the evaporative emissions system. You could delete one system and keep the other: Keep a closed PCV system and vent the gas tank, or install an atmospheric-vented catch can and keep the stock evaporative emissions system.

And both systems are completely separate from the sequential twin turbos. You could run simplified sequential and retain both factory systems; you could delete both, or you could delete one and keep the other.
Old 08-14-11, 01:36 PM
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Thank you! That's why I try to have a disclaimer as I'm sure there was a valid point to it, I just didn't see it! Thanks for explaining.

There is a slight leak coming from the firewall side of the catch tank so I wasn't sure if I should replace it and the hoses or it could be removed.

Based on my plan to go single turbo in late Winter / early Spring, I think I've decided to go non-sequential instead of buying new solenoids. I am also planning on routing my catch can to the oil filler neck and the front turbo inlet (per another thread, please correct if there is a better way).

FOr the evaporative emissions, I will probably just get another OEM catch tank and replace the hoses to be safe. I'm not sure I'm comfortable trying to find a way to vent the gas tank.

Thanks again for your help!
Old 08-14-11, 01:47 PM
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I went non seq because all of my solenoids broke, also diggin the really simplified look under the hood, will allow for much easier diagnosis of future problems as well. If you don't have a standalone ecu, your going to have to get some resistors to plug into the solenoid connectors to avoid ecu codes... I have a power fc, so I don't have that issue.
Old 08-14-11, 03:35 PM
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Yeah I plan on getting some resistors as I won't be getting the PFC until around March. All those friggin things breaking pretty much made up my mind on it too! Ha. Well, that and I'm going single anyways so might as well...

I'm having a hell of a time getting the rack out, though. Mainly because it's tied to the hard lines in the back and the one in the front that has the coolant line to it. The front one shouldn't be too bad once I take the alternator off but the back one is going to be a PITA!

Where I'm at so far....
Old 08-19-11, 08:06 AM
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Anyone have a trick for getting the vacuum chamber out that's right below the alternator? I took off the alternator brackets and the oil filler neck and unscrewed it from the solenoid rack... It acts like it's connected at the bottom some how..

If I can't get it out I'll just cap it but I'm just cleaning out what I can.
Old 08-19-11, 12:42 PM
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hmmm... i dont really remember the chamber ur talking about, its been a while since i pulled it all off. But I didn't remove the oil fill neck, i did remove the air pump and alternator completely to really get everything off.
I mainly used :
http://www.rotaryresurrection.com/3r..._teardown.html
and
http://www.rotaryresurrection.com/3r...ov_nonseq.html
for directions and pointers on my non seq conversion. its pretty straight forward as you get into it.
Old 08-19-11, 01:50 PM
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Originally Posted by Leetfade
Anyone have a trick for getting the vacuum chamber out that's right below the alternator? I took off the alternator brackets and the oil filler neck and unscrewed it from the solenoid rack... It acts like it's connected at the bottom some how..

If I can't get it out I'll just cap it but I'm just cleaning out what I can.

Thats because it is connected with 1 10mm bolt on the bottom. Idk how I remember this that well but I also had a hard time trying to remove/install that vacuum chamber, its very tricky
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