I have went through THREE pcv hoses, they all cave in like this. I have an AEM cold air intake and have made sure not to tighten the hose camps too tight yet this continues to happen. Not only are the pcv hoses hard to find but they're over priced and made out of cheap plastic. Does this happen to anyone else, and if so do they make aluminum ones?



(Taco Bell sells Tacos, look it up.)

 

Very odd, I would say the hose is getting too warm allowing it to change shape

Not sure if this will help but it is a PCV hose fix: https://www.ranger-forums.com/4-0l-o...mon-cel-93776/

 

Thank you but the problem isn't even the elbow, this happens where the hose connects to my CAI, at the hose clamp. The only thing I can think of trying is to get a 4th one and practically not tighten the hose clamp at all. I live in las vegas and maybe the heat could be a factor but it had happened in the winter too.

 

I think I would be better off using a rubber tube for the whole thing that way it couldn't cave in like that

 

Yes, that's what I was thinking, silicone hose

But thats not the PCV hose, its the breather or vent hose, part of the PCV system

It allows filtered air to come into the engine when PCV Valve opens more, i.e. when intake vacuum is lower, during acceleration when blow-by is higher

So there really shouldn't be any negative pressure in that hose
Only thing that comes to mind is that the air filter or its fresh air intake are restricted, so when throttle is close to wide open its pulling air FROM that hose(and engine) which doesn't have an air inlet EXCEPT for that hose, so negative pressure builds up in that hose

The stock Ranger CAI has 200% air flow so unless filter is really really dirty it shouldn't do that

If you have added a 3rd party CAI, then thats the problem and why that hose is collapsing, you have limited air flow thru that system, you need a bigger filter

Rule of thumb, if you can "hear" air flowing into an engine, then you have restricted flow
So REV the engine, if you can "hear" it then you need to change it

 

You said you have a hose clamp on it. The OEM intake does not have a hose clamp on it for that tube. At least I know mine does not. I don't think that tube is designed to have clamping pressure on it. I think the hose clamp is your problem. If you need a little clamping pressure to hold it in place, use the least amount of pressure you can use and still hold it in place. Better yet, try not using the hose clamp and use a good oil resistant silicone gasket maker to hold it in place Just make sure you clean both surfaces well before assembling. Let it cure well before running the engine.

It will be more difficult to remove but it should not come apart on its own. If I was doing it, I would probably put a very thin film of oil on the tube so it would not bond well to it. When you need to take it apart, it would be easier but should still be tight enough to reassemble without having to apply the silicone again.