what is this hose??
Thread Starter
Instructor
Joined: Feb 2008
Posts: 128
Likes: 0
what is this hose??
I was cleaning around the engine yesterday and noticed this thick hose was dangling. It looks to be a fuel line or something but is not very long. It connects to an area of the frame with a spout. My guess is that there is some kind of mechanism on the inside of the frame. It is directly under the windshield wiper reservoir on the drivers side obviously. What can you guys make of this?
<a href="http://s582.photobucket.com/albums/ss266/jsholm2/?action=view¤t=DSC01302.jpg" target="_blank"><img src="http://i582.photobucket.com/albums/ss266/jsholm2/DSC01302.jpg" border="0" alt="hose ??"></a>
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<a href="http://s582.photobucket.com/albums/ss266/jsholm2/?action=view¤t=DSC01302.jpg" target="_blank"><img src="http://i582.photobucket.com/albums/ss266/jsholm2/DSC01302.jpg" border="0" alt="hose ??"></a>
http://i582.photobucket.com/albums/s...2/DSC01309.jpg
Former Vendor
Joined: Apr 2009
Posts: 766
Likes: 3
From: Charlotte North Carolina 704-394-5150
It looks like the hose that would connect your charcoal canister to your PCV valve hose. Some myear Corvettes had a "T" fitting in the hose that goes from the front of the carb to the PVC, and the hose you are asking about would connect to the "T" and go to the charcoal canister. It is clearly outlined in the emissions hose routing decal for your car. What year is your car?
"DUB"
"DUB"
Intermediate
Joined: May 2009
Posts: 39
Likes: 0
From: Montgomery TX
Went out to my '79 to make sure. No doubt. Goes to fuel charcoal canister at one end and Carb at the other end. I have an EDL 1400, which has the connection between the carb fuel inlet and electric choke.
Thread Starter
Instructor
Joined: Feb 2008
Posts: 128
Likes: 0
It looks like the hose that would connect your charcoal canister to your PCV valve hose. Some myear Corvettes had a "T" fitting in the hose that goes from the front of the carb to the PVC, and the hose you are asking about would connect to the "T" and go to the charcoal canister. It is clearly outlined in the emissions hose routing decal for your car. What year is your car?
"DUB"
"DUB"
Thanks for the help guys. This forum is priceless
Intermediate
Joined: May 2009
Posts: 39
Likes: 0
From: Montgomery TX
jsholm2:
Grandmastercorvette is saying (hope I'm not insulting grandmaster) is the end of your hose that is not connected, the engine side, needs to be attached to a positive (sucking) vacume location.
The carb has different size connections that produce this requirement. As you can tell by the diameter of your hose, it needs to be a "large" connection. However, most of todays carb's do not have a separate connection for this Therfore, a common connection, know as a "t" from your carb to the PCV (postiive crankcase ventalation) hose will work.
I can't tell by your pictures if the PCV is in your left or right valve cover, but all you need to do is go to autozone or someplace like it, tell them you want to tie in to the pcv line with a common connection with another hose (tell them the size if your filter hose) and they should just walk down an isle and get you the plastic piece that will fit.
zmanc3
Grandmastercorvette is saying (hope I'm not insulting grandmaster) is the end of your hose that is not connected, the engine side, needs to be attached to a positive (sucking) vacume location.
The carb has different size connections that produce this requirement. As you can tell by the diameter of your hose, it needs to be a "large" connection. However, most of todays carb's do not have a separate connection for this Therfore, a common connection, know as a "t" from your carb to the PCV (postiive crankcase ventalation) hose will work.
I can't tell by your pictures if the PCV is in your left or right valve cover, but all you need to do is go to autozone or someplace like it, tell them you want to tie in to the pcv line with a common connection with another hose (tell them the size if your filter hose) and they should just walk down an isle and get you the plastic piece that will fit.
zmanc3
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Former Vendor
Joined: Apr 2009
Posts: 766
Likes: 3
From: Charlotte North Carolina 704-394-5150
I hope that you have at least one hole in each valve cover. And the valve cover that has the PVC in it has a baffle installed on the valve cover from the underside. This is important. With no baffle your PVC will suck oil into the carb due to oil splashing arouind teh rocker arms while running. That is not good at all. The other valve cover should have a hole in it so it can either be connected to the underside of your air cleaner base or have a breather installed into it. Your PVC should be installed on the drivers valve cover at the front, and the breather tube or breather should be installed at the passenger rear valve cover. This allows the air to cross through the engine as designed for better performance of the PVC system and works better than having both openings in the valve covers at the front or rear. You want a cross flow of air.
Your PVC hose from the carb should be at the front, down low, close to the intake manifold IN the base plate of the carb. That is if you still have a Qudrajet carb. I think some Holleys have it in the rear, but either carb, the hose connection will be the large (3/8" fitting) that is in the baseplate that is designed to allow you to slide and clamp a hose onto it. It is not a threaded fitting, much like your power brake booster connection, which is in the rear of your carb (if Quadrajat).
Once again, take the hose from the carb fitting and route it to your PVC. Install a vacuum "t" fitting into the hose. Now install a small section of hose to your "t" fitting and connect it to your PVC. Then connect your hose in question to the LAST port on the "t" fittting. Some PVC valves have a 90 degree end on them while some have a straight end on them , either way , just allow enough hose so the hose won't pull of or break the plastic end on the 90 degree PVC valve if that is what you have.
Be sure your valve covers are correctly installed as mentioned or you may have issues if not correct. Also if you do not have baffles in your covers, you may need to get new ones that have them. When you get the hoses correct. Crank your engine and test your PVC system. To make sure you have enough positive pressure, remove your breather tube or aftermarket breather filter. With the engine RUNNING and the PVC installed and connected. Take a small piece of paper that will cover the hole in the valve cover where the breather tube/filter was and place it over it. It should be sucked to the grommet and hold its position. Then drag it across is and see if you feel drag. If it is sucked to the grommet and has slight drag while pulling the paper across the grommet your PVC system is working correctly. If the paper blows off or will not stay, and yet you can remove the PVC while the engine is running and feel vacuum on the PVC valve by placing your finger tip over the end of the PVC valve, YOU have MAJOR engine issues dealing with the rings allowing cylinder compression entering the crankcase. Or try bypassing the hose you just connected and allow the hose from the carb baseplate to go DIRECTLY to your PVC valve and test again. You may have a bad charcoal canister if the results change for the better.
zmanc3...no offense taken.. bottom line here is to get it right and if I get offended by someone trying to help another by correcting me....well...I just need to get over it. I am GOOD, but I am not GOD. I learn something new everyday, or at least TRY to.
"DUB"
Your PVC hose from the carb should be at the front, down low, close to the intake manifold IN the base plate of the carb. That is if you still have a Qudrajet carb. I think some Holleys have it in the rear, but either carb, the hose connection will be the large (3/8" fitting) that is in the baseplate that is designed to allow you to slide and clamp a hose onto it. It is not a threaded fitting, much like your power brake booster connection, which is in the rear of your carb (if Quadrajat).
Once again, take the hose from the carb fitting and route it to your PVC. Install a vacuum "t" fitting into the hose. Now install a small section of hose to your "t" fitting and connect it to your PVC. Then connect your hose in question to the LAST port on the "t" fittting. Some PVC valves have a 90 degree end on them while some have a straight end on them , either way , just allow enough hose so the hose won't pull of or break the plastic end on the 90 degree PVC valve if that is what you have.
Be sure your valve covers are correctly installed as mentioned or you may have issues if not correct. Also if you do not have baffles in your covers, you may need to get new ones that have them. When you get the hoses correct. Crank your engine and test your PVC system. To make sure you have enough positive pressure, remove your breather tube or aftermarket breather filter. With the engine RUNNING and the PVC installed and connected. Take a small piece of paper that will cover the hole in the valve cover where the breather tube/filter was and place it over it. It should be sucked to the grommet and hold its position. Then drag it across is and see if you feel drag. If it is sucked to the grommet and has slight drag while pulling the paper across the grommet your PVC system is working correctly. If the paper blows off or will not stay, and yet you can remove the PVC while the engine is running and feel vacuum on the PVC valve by placing your finger tip over the end of the PVC valve, YOU have MAJOR engine issues dealing with the rings allowing cylinder compression entering the crankcase. Or try bypassing the hose you just connected and allow the hose from the carb baseplate to go DIRECTLY to your PVC valve and test again. You may have a bad charcoal canister if the results change for the better.
zmanc3...no offense taken.. bottom line here is to get it right and if I get offended by someone trying to help another by correcting me....well...I just need to get over it. I am GOOD, but I am not GOD. I learn something new everyday, or at least TRY to.
"DUB"
Pro
Joined: May 2006
Posts: 573
Likes: 5
From: Georgetown Township MI
I hope that you have at least one hole in each valve cover. And the valve cover that has the PVC in it has a baffle installed on the valve cover from the underside. This is important. With no baffle your PVC will suck oil into the carb due to oil splashing arouind teh rocker arms while running. That is not good at all. The other valve cover should have a hole in it so it can either be connected to the underside of your air cleaner base or have a breather installed into it. Your PVC should be installed on the drivers valve cover at the front, and the breather tube or breather should be installed at the passenger rear valve cover. This allows the air to cross through the engine as designed for better performance of the PVC system and works better than having both openings in the valve covers at the front or rear. You want a cross flow of air.
Your PVC hose from the carb should be at the front, down low, close to the intake manifold IN the base plate of the carb. That is if you still have a Qudrajet carb. I think some Holleys have it in the rear, but either carb, the hose connection will be the large (3/8" fitting) that is in the baseplate that is designed to allow you to slide and clamp a hose onto it. It is not a threaded fitting, much like your power brake booster connection, which is in the rear of your carb (if Quadrajat).
Once again, take the hose from the carb fitting and route it to your PVC. Install a vacuum "t" fitting into the hose. Now install a small section of hose to your "t" fitting and connect it to your PVC. Then connect your hose in question to the LAST port on the "t" fittting. Some PVC valves have a 90 degree end on them while some have a straight end on them , either way , just allow enough hose so the hose won't pull of or break the plastic end on the 90 degree PVC valve if that is what you have.
Be sure your valve covers are correctly installed as mentioned or you may have issues if not correct. Also if you do not have baffles in your covers, you may need to get new ones that have them. When you get the hoses correct. Crank your engine and test your PVC system. To make sure you have enough positive pressure, remove your breather tube or aftermarket breather filter. With the engine RUNNING and the PVC installed and connected. Take a small piece of paper that will cover the hole in the valve cover where the breather tube/filter was and place it over it. It should be sucked to the grommet and hold its position. Then drag it across is and see if you feel drag. If it is sucked to the grommet and has slight drag while pulling the paper across the grommet your PVC system is working correctly. If the paper blows off or will not stay, and yet you can remove the PVC while the engine is running and feel vacuum on the PVC valve by placing your finger tip over the end of the PVC valve, YOU have MAJOR engine issues dealing with the rings allowing cylinder compression entering the crankcase. Or try bypassing the hose you just connected and allow the hose from the carb baseplate to go DIRECTLY to your PVC valve and test again. You may have a bad charcoal canister if the results change for the better.
zmanc3...no offense taken.. bottom line here is to get it right and if I get offended by someone trying to help another by correcting me....well...I just need to get over it. I am GOOD, but I am not GOD. I learn something new everyday, or at least TRY to.
"DUB"
Your PVC hose from the carb should be at the front, down low, close to the intake manifold IN the base plate of the carb. That is if you still have a Qudrajet carb. I think some Holleys have it in the rear, but either carb, the hose connection will be the large (3/8" fitting) that is in the baseplate that is designed to allow you to slide and clamp a hose onto it. It is not a threaded fitting, much like your power brake booster connection, which is in the rear of your carb (if Quadrajat).
Once again, take the hose from the carb fitting and route it to your PVC. Install a vacuum "t" fitting into the hose. Now install a small section of hose to your "t" fitting and connect it to your PVC. Then connect your hose in question to the LAST port on the "t" fittting. Some PVC valves have a 90 degree end on them while some have a straight end on them , either way , just allow enough hose so the hose won't pull of or break the plastic end on the 90 degree PVC valve if that is what you have.
Be sure your valve covers are correctly installed as mentioned or you may have issues if not correct. Also if you do not have baffles in your covers, you may need to get new ones that have them. When you get the hoses correct. Crank your engine and test your PVC system. To make sure you have enough positive pressure, remove your breather tube or aftermarket breather filter. With the engine RUNNING and the PVC installed and connected. Take a small piece of paper that will cover the hole in the valve cover where the breather tube/filter was and place it over it. It should be sucked to the grommet and hold its position. Then drag it across is and see if you feel drag. If it is sucked to the grommet and has slight drag while pulling the paper across the grommet your PVC system is working correctly. If the paper blows off or will not stay, and yet you can remove the PVC while the engine is running and feel vacuum on the PVC valve by placing your finger tip over the end of the PVC valve, YOU have MAJOR engine issues dealing with the rings allowing cylinder compression entering the crankcase. Or try bypassing the hose you just connected and allow the hose from the carb baseplate to go DIRECTLY to your PVC valve and test again. You may have a bad charcoal canister if the results change for the better.
zmanc3...no offense taken.. bottom line here is to get it right and if I get offended by someone trying to help another by correcting me....well...I just need to get over it. I am GOOD, but I am not GOD. I learn something new everyday, or at least TRY to.
"DUB"
Intermediate
Joined: May 2009
Posts: 39
Likes: 0
From: Montgomery TX
"zmanc3...no offense taken.. bottom line here is to get it right and if I get offended by someone trying to help another by correcting me....well...I just need to get over it. I am GOOD, but I am not GOD. I learn something new everyday, or at least TRY to.
"DUB"
DUB:
That is exactly my spirit of this forum. Providing knowledge ,or at least my personal experience so others do not have to go down the learning curve road like I did. And read what others say about topics so I can learn from them; or better yet, have the comfort to ask a question and that question be received in an informative enviroment is all positive.
Respects:
zmanc3
"DUB"
DUB:
That is exactly my spirit of this forum. Providing knowledge ,or at least my personal experience so others do not have to go down the learning curve road like I did. And read what others say about topics so I can learn from them; or better yet, have the comfort to ask a question and that question be received in an informative enviroment is all positive.
Respects:
zmanc3
Former Vendor
Joined: Apr 2009
Posts: 766
Likes: 3
From: Charlotte North Carolina 704-394-5150
Yes I meant to type PCV. NOT PVC. We aren't plumbing here. SORRY for the typo. Sometimes my mild dyslexia will effect words, but it is more likely to switch the last two numbers in a sequence around.
Sorry if any complications were created from my error in typing.
"DUB"
Sorry if any complications were created from my error in typing.
"DUB"
Limping across the line
Joined: Oct 2002
Posts: 5,299
Likes: 109
From: Peoria Az
Yes I meant to type PCV. NOT PVC. We aren't plumbing here. SORRY for the typo. Sometimes my mild dyslexia will effect words, but it is more likely to switch the last two numbers in a sequence around.
Sorry if any complications were created from my error in typing.
"DUB"
Sorry if any complications were created from my error in typing.
"DUB"
Former Vendor
Joined: Apr 2009
Posts: 766
Likes: 3
From: Charlotte North Carolina 704-394-5150
"DUB"