What are these things on my intake manifold??
03-10-2009, 07:02 PM
#1
What are these things on my intake manifold?? What are these things, and do I need them?
A - no idea
B - some sort of fuel pressure regulator? Is it vacuum operated?
C - This thing attached to B and I thought it went to my throttle body... but it doesn't look like there is a hole for it. It looks like a little vacuum line or something.
Thanks, -Dave
A - no idea
B - some sort of fuel pressure regulator? Is it vacuum operated?
C - This thing attached to B and I thought it went to my throttle body... but it doesn't look like there is a hole for it. It looks like a little vacuum line or something.
Thanks, -Dave
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03-10-2009, 09:25 PM
#9
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A: PCV Hose connects to a y fitting to each valve cover at the rear.
B: Evap solenoids
C: Vacumn for your fuel rail i think it goes to the back of the intake that capped on most
B: Evap solenoids
C: Vacumn for your fuel rail i think it goes to the back of the intake that capped on most
03-10-2009, 10:51 PM
#10
Haha I did not drop them in the mud - that's 3 years of dust from a salvage yard and a body shop.
So what the heck do I do with A, B and C??
A - vacuum hose, sounds like I should keep it. Right?
B - I don't even know what an EVAP system is or does. Is this something I should have? Does it have anything to do with my charcoal canister? Are both of those parts the EVAP?
C - ???
So what the heck do I do with A, B and C??
A - vacuum hose, sounds like I should keep it. Right?
B - I don't even know what an EVAP system is or does. Is this something I should have? Does it have anything to do with my charcoal canister? Are both of those parts the EVAP?
C - ???
03-11-2009, 12:03 AM
#12
A - is your pcv hose and system, connects both Valve covers and connects to a PCV valve to restrict oil and then be sucked the fumes / air back into the intake.
B- is your EVAP system, this suck the fumes from the fuel tank in to your intake system.
C- no sure..
A and B are part of the smog system to keep emission and fumes from escaping into the air. Do you need them?, will that fight will go on forever as usual.
They do have some benifits.. like the PCV system will add neg pressure inside of your engine crank case, cause positive pressure is not good, it will cause blowen seal and oil to be pushed out of you aftermarket breathers if you remove the PCV and just use Breathers.
B- is your EVAP system, this suck the fumes from the fuel tank in to your intake system.
C- no sure..
A and B are part of the smog system to keep emission and fumes from escaping into the air. Do you need them?, will that fight will go on forever as usual.
They do have some benifits.. like the PCV system will add neg pressure inside of your engine crank case, cause positive pressure is not good, it will cause blowen seal and oil to be pushed out of you aftermarket breathers if you remove the PCV and just use Breathers.
03-11-2009, 09:15 AM
#13
Okay, so I think I see how the PCV system is supposed to work.
A - I installed an LS6 valley cover, so I can get rid of A, right? Just attach my PCV valve to the intake manifold and then run it directly into the steel hose-end on the LS6 valley cover? Then somehow cap off the nipple on the rear of the driver's side valve cover?
Also, can I use regular neoprene hose for the PCV system and that vent that runs from the throttle body to the passenger valve cover?
Do I need to put hose clamps on any of these connections?
B - EVAP System: So is there a separate line from the fuel tank that just carries fumes from the fuel tank to the engine in order to get burnt off?
A - I installed an LS6 valley cover, so I can get rid of A, right? Just attach my PCV valve to the intake manifold and then run it directly into the steel hose-end on the LS6 valley cover? Then somehow cap off the nipple on the rear of the driver's side valve cover?
Also, can I use regular neoprene hose for the PCV system and that vent that runs from the throttle body to the passenger valve cover?
Do I need to put hose clamps on any of these connections?
B - EVAP System: So is there a separate line from the fuel tank that just carries fumes from the fuel tank to the engine in order to get burnt off?
Last edited by FastKat; 03-11-2009 at 10:19 AM.
03-11-2009, 09:21 AM
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For 'A', have you seen the write up at ls1howto.com on the LS6 PCV, has some good pics:
http://www.ls1howto.com/index.php?article=18
Use fuel line from any auto parts store to replace the PCV hoses. The line has to be tough so it won't collapse under vacuum.
http://www.ls1howto.com/index.php?article=18
Use fuel line from any auto parts store to replace the PCV hoses. The line has to be tough so it won't collapse under vacuum.
03-11-2009, 09:30 AM
#15
Yea, that ls1howto.com LS6 PCV article was what I used to install the LS6 valley cover in the first place. Very good article.
Fuel line it is!
Fuel line it is!
For 'A', have you seen the write up at ls1howto.com on the LS6 PCV, has some good pics:
http://www.ls1howto.com/index.php?article=18
Use fuel line from any auto parts store to replace the PCV hoses. The line has to be tough so it won't collapse under vacuum.
http://www.ls1howto.com/index.php?article=18
Use fuel line from any auto parts store to replace the PCV hoses. The line has to be tough so it won't collapse under vacuum.
03-11-2009, 03:37 PM
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It is. As soon as I broke (C) my heater controls stopped working. The ***** work, but you have no vacuum. It's impossible to see if it's broken, and one of the last things you would expect.
03-11-2009, 05:06 PM
#19
Ahhh, I bet that's it. For some reason I thought C went to the throttle body, but there was no hole there for it. I will check my MAP sensor and see if there is a spot for it.
I still think that C attaches to B somewhere... or what I have been told are the two parts that make up my EVAP system.
I guess I better search to see how the EVAP system works, and what can stay and what can go.
I still think that C attaches to B somewhere... or what I have been told are the two parts that make up my EVAP system.
I guess I better search to see how the EVAP system works, and what can stay and what can go.
03-12-2009, 02:48 AM
#20
B and C don't connect.
Evap plugs into the manifold port behind the T/B. it is a Brass port. then the other end goes to the hose that leads to the fuel tank.
Why don't you go highjax one of your friends F-Body and take some pictures of the parts and hoses.
Evap plugs into the manifold port behind the T/B. it is a Brass port. then the other end goes to the hose that leads to the fuel tank.
Why don't you go highjax one of your friends F-Body and take some pictures of the parts and hoses.