84 crossfire weird vacuum route.
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Joined: Jul 2013
Posts: 67
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From: Las Cruces New Mexico
84 crossfire weird vacuum route.
I'm checking all of my vacuum lines in my 84 and I found some discrepancies between what I have and what over Crossfire engines have. My PCV vacuum line is routed to a port behind the rear TBI, while the port that it looks like it is supposed to go to is capped off.
The line in red is showing the route my PCV is taking.
http://s1363.photobucket.com/user/js...?state=replace
The red circle is showing where most other crossfire engines have their PCV routed to. Capped off in mine.
http://s1363.photobucket.com/user/js...tml?sort=3&o=0
Can anyone let me know the proper route and if it stays like this will it damage the engine? Thanks
The line in red is showing the route my PCV is taking.
http://s1363.photobucket.com/user/js...?state=replace
The red circle is showing where most other crossfire engines have their PCV routed to. Capped off in mine.
http://s1363.photobucket.com/user/js...tml?sort=3&o=0
Can anyone let me know the proper route and if it stays like this will it damage the engine? Thanks
Last edited by Jstnbrwn; Aug 15, 2013 at 03:27 PM.
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Joined: Jul 2013
Posts: 67
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From: Las Cruces New Mexico
Hmmm, I'm gonna take a guess that the vacuum lines are a little different between standard and automatic. And you ,hemivett, have a standard transmission.
Last edited by Jstnbrwn; Aug 15, 2013 at 03:59 PM.
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From: Seattle Wa
You are correct! 4+3, soon to be ZF. I just eliminated the charcoal lines, (PO removed canister, and capped ends) and there must have been some vacuum leaks, or a failing PVC, cause now she runs really smooth. h
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Joined: Jul 2013
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From: Las Cruces New Mexico
I bet she does run really smooth. I don't suppose you have any pictures of the capped lines. I still have the air pump on mine, but the PO has the air injection check valve pipe being fed to the CCV on the passenger side valve cover.
http://s1363.photobucket.com/user/js...4bb46.jpg.html
http://s1363.photobucket.com/user/js...4bb46.jpg.html
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Joined: Sep 2012
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From: Seattle Wa
Sorry no pics. All gone now!
That works, but mine is a different configuration. My hose goes from the valve cover to the air cleaner, and from the smog pump to the air cleaner. Now since I eliminated all the emissions, I took the smog pump off, and took apart what I could, and used a hammer, and screwdriver to bust the guts out of the rest. I then put it back on, and all it does is hold the belt. Works great, and no more pump flutter noise, or hp loss. h
That works, but mine is a different configuration. My hose goes from the valve cover to the air cleaner, and from the smog pump to the air cleaner. Now since I eliminated all the emissions, I took the smog pump off, and took apart what I could, and used a hammer, and screwdriver to bust the guts out of the rest. I then put it back on, and all it does is hold the belt. Works great, and no more pump flutter noise, or hp loss. h
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Joined: Sep 2012
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From: Seattle Wa
DO NOT PLUG IT! Its for crank case ventilation. If it doesnt fit snug, then replace the parts that are worn. You should have port, on the bottom portion of the air cleaner housing. Its under the scoop portion. Basically a straight shot from the valve cover to the air cleaner. You can put a breather cap on it, and plug the air cleaner nipple, so it doesnt suck hot air into the engine. h
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So long as the lines go to a vac source (the manifold ) it makes no difference to operation
If you are not using the AIR pump you delete everything into / out of it and only have to cap the lines into the exhaust manifold.
The pump will continue to happily pump air to nowhere .
The pump will continue to happily pump air to nowhere .
Pro
Joined: Sep 2012
Posts: 610
Likes: 12
From: Seattle Wa
Ya a breather will work fine. The hose really doesnt need to do anything. You can cut if off, and plug it, and maybe it wont be so noisey, but I would gut the pump, like I told you. h
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