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PCV Catch Can Question?

Daryl LBZ

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Daryl LBZ Senior Enthusiast

Daryl LBZ

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Nice! By the way, who thought up that ingenious mounting location for the catch can? Musta' been a really smart guy!

 

Oh wait a minute, it was me! :cool:

Would have been even smarter if he had used metric bolts in the existing threaded holes instead of using standard and breaking them off......

 

 

:)

 

:lol:

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amc31b Enthusiast

amc31b

Posted
Posted

Would have been even smarter if he had used metric bolts in the existing threaded holes instead of using standard and breaking them off......

 

 

:)

 

Almost every ingenious idea involves some amount of trial and error. :)

I had no problem being the guniea pig of the group this time and saving everyone else the trouble I went through. Sometimes you just have to take a step back and laugh at yourself, ya know?

 

:cheers:

 

Besides, I used a screw extractor kit to remove the bolts since and then measured their depth, they barely even go 1/2" deep, which would probably not be strong enough for a catch can of this size anyways.

 

On that note, does anyone know what those 2 threaded holes are used for?

Daryl LBZ Senior Enthusiast

Daryl LBZ

Posted
  • Author
Posted

What brand fuel line is everyone using? Mine doesn't seem to be very good quality. It looks like its already dry rotted, and I'd like to get something better. It's also hissing which goes away when I pinch the hose some. I figured that it might just be from the air circulating around in the can?

 

amc31b Enthusiast

amc31b

Posted
Posted

I am using Gates Barricade fuel hose from Napa. It is excellent hose and is formulated to handle the new ethanol and bio based fuels which eat up traditional hoses.

 

The hissing you are hearing is really not good, that almost always means there is a leak. If it goes away when you pinch the hose, you might want to use different style clamps. You should spray all your connections with soapy water while your engine is running and check for leaks to be sure.

Daryl LBZ Senior Enthusiast

Daryl LBZ

Posted
  • Author
Posted
I am using Gates Barricade fuel hose from Napa. It is excellent hose and is formulated to handle the new ethanol and bio based fuels which eat up traditional hoses.

 

The hissing you are hearing is really not good, that almost always means there is a leak. If it goes away when you pinch the hose, you might want to use different style clamps. You should spray all your connections with soapy water while your engine is running and check for leaks to be sure.

 

Thanks I'll get some of that hose from Napa tomorrow. What other type of clamps would you recommend? Right now I'm using the old style that tighten with a screw driver, and as tight as I have them I really shouldn't tighten them anymore or it will probably crush the original plastic line.

 

amc31b Enthusiast

amc31b

Posted
Posted

Regular hose clamps should be fine, so long as you didn't over tighten them. You really need to check for leaks with soapy water first and then try different things from there. The other problem I could see with your set up (besides a leak) is if you over tightened the hose clamps, you might have crushed the factory plastic hose into a fan or flat shape and the gas going past the fan shaped opening is making a whistle/hiss noise. Similar to the way you shape your lips and blow to whistle, you may have done the same thing with your plastic tubing.

 

If you are sure your system has no leaks anywhere, I would take the hose off of your factory plastic tubing and inspect it. Make sure you did not crush the factory tubing and it did not crack or split anywhere. If none of this works and the factory tubing looks good and round, try switching all your clamps over to the pinch style clamps you see on my set-up. They should squeeze tight enough to make a seal but not so tight they crush or damage anything.

 

I dont mean to insult your intellegence but you are using 3/8" ID fuel hose right? if you tried to use a different diameter or type of hose, it may not fit the factory plastic tubing correctly and cause problems. If all else fails, give Mike Norris a call and see what his opinion is.

 

Let us know how you make out.

RyanbabZ71 Senior Enthusiast

RyanbabZ71

Posted
Posted

Bought my extra hose from Napa, its made by gates (dont think its the barricade one previously talked about)

 

I am not running any hose clamps on either of my vehicles and to date have no issues (knock on wood).

Daryl LBZ Senior Enthusiast

Daryl LBZ

Posted
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I was wondering if maybe I had the clamps to tight. I read to not over tighten them, but maybe I still did. I'm going to get some new hose today, and before I put it on I'm going to check for leaks and see if I can pinpoint it. I am using the 3/8" diameter fuel line. It fit over the stock plastic lines like a glove. I also think I'll pick up some of the new style clamps too, and i'll try Ryan's method of no clamps first, and see if it's still hissing, if not then I probably over tightened the clamps. Like I said though I'm going to try to find the leak before I do any of this. I'll keep you posted.

txab Senior Enthusiast

txab

Posted
Posted

What brand fuel line is everyone using? Mine doesn't seem to be very good quality. It looks like its already dry rotted, and I'd like to get something better. It's also hissing which goes away when I pinch the hose some. I figured that it might just be from the air circulating around in the can?

Many have reported just that. They think they have a vacuum leak and then find out it's just sound from within the can

Doug_Scott Senior Enthusiast

Doug_Scott

Posted
Posted

I am using Gates Barricade fuel hose from Napa. It is excellent hose and is formulated to handle the new ethanol and bio based fuels which eat up traditional hoses.

 

The hissing you are hearing is really not good, that almost always means there is a leak. If it goes away when you pinch the hose, you might want to use different style clamps. You should spray all your connections with soapy water while your engine is running and check for leaks to be sure.

 

Ok, I'll bite. How does soapy water help you locate vacuum leaks?

Daryl LBZ Senior Enthusiast

Daryl LBZ

Posted
  • Author
Posted

Ok, so I got new hose from Napa. Came home, and sprayed soapy water at every connection. Nothing. So I got the old hose off, and cut the original plastic line back farther to get rid of any of it that could have been crushed by the hose clamps. I installed the new hose without any hose clamps.

 

I still hear hissing, and the only thing I can think of is it's the air circulating through the can like i suggested earlier. Every fitting is tight, and both lids on the can are tight.

 

On a side note I had the bottom off then can to check the drain valve, and fitting out, and there was enough oil to completely line the bottom lid of the can. So far I'm very happy with this mod, it's worth it.

 

amc31b Enthusiast

amc31b

Posted
Posted

Doug- Simple, If you have a big enough vacuum leak, you will see the suds bubbling and being sucked into where the leak is. The soapy water will usually make a seal for a second or two and the hiss noise will go away. If you have a pressure leak, you will see the subs bubbling and being pushed out. You can also do this with carb cleaner, cigar smoke, propane and a bunch of other ways. Just youtube it if you want to see it.

 

Watch this video at 8:00 mins. He talks about using soapy water to check for leaks.

 

 



 

 

Daryl- I guess it depends how loud the hiss is. My engine sounds a little different with the can installed but the sound is more like regular air flow rather than a high pitched hiss. You don't even hear mine if you have the hood closed. if you have no leaks anywhere, you can probably just assume you are good to go. I think you will be better off in the long run with the pinch clamps, too. That is great you are getting oil already! Keep us updated.

DaveH71 Enthusiast

DaveH71

Posted
Posted

You don't have a vacuum leak, the hissing sound is the movement of air inside the catch can. Every can that i've been around has the same hiss, as well as the one that installed on my truck. Nothing to worry about.

Daryl LBZ Senior Enthusiast

Daryl LBZ

Posted
  • Author
Posted

Daryl- I guess it depends how loud the hiss is. My engine sounds a little different with the can installed but the sound is more like regular air flow rather than a high pitched hiss. You don't even hear mine if you have the hood closed. if you have no leaks anywhere, you can probably just assume you are good to go. I think you will be better off in the long run with the pinch clamps, too. That is great you are getting oil already! Keep us updated.

 

 

I tried getting the pinch clamps, but no one had them. Where did you find yours at? I can't believe it caught as much oil as it has in less than a week. I wish I had done this sooner than 17,000 miles.

 

 

 

You don't have a vacuum leak, the hissing sound is the movement of air inside the catch can. Every can that i've been around has the same hiss, as well as the one that installed on my truck. Nothing to worry about.

 

 

Sounds good. Thanks for the info.

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