We plugged up the PVC on our 2003 Dodge Grand Caravan. We needed help finding the PVC so we asked the AutoZone guy. He said if we plug it up the seals will burn up.

Are the seals likely to burn up? Is there a problem with plugging up PVC?

Kind Regards,

Phillip and Zachary

Ok here`s the answer. Yes it will blow the seals if you plug the pcv. But we do not!!! plug the pcv we are plugging the pcv vaccum line and re routing the pcv hose back to the passive side of the intake. This still lets the engine breath as it was intended. The reason it is hooked up the way it is, the EPA doesn`t want any hydrocarbons going to the atmosphere. The way we do it the hydrocarbons still burn in the cat just different route. Hope this helps. Dan gadgetman Mo.

First, PVC is a type of Plastic, and NOT an emissions control system. That is the "PCV". Please remember that, as we are professionals and are judged by our use of words (whether we like it or not!).

Second, there is no way what we do will blow the seals. In the rare case where a leak does develop after disconnecting the vacuum, this is due to worn seals, and not pressurization of the system.

If the engine leaks oil without vacuum, then the vacuum was the only thing keeping the oil in the engine to begin with. Think about that for a minute. These kind of leaks tell you the seal was allowing air into the oil system at the crank, absolutely aerating the oil, and thus degrading it's lubrication properties.

So, if it leaks it is actually a GOOD thing for the customer to know, as the worn seal will, of necessity, cause accelerated wear. No way around it. The customer should be glad to be able to identify this issue that it be corrected without further damage to the bearings et al in the engine.

All mechanics, not understanding this simple fact, will speak negatively about capping the system in this regard. Take a moment and walk them through as I just did and (if they're not too arrogant to learn something) will thank you for the better understanding.

This can also be used by the average mechanic to bring in more business, if they're the business-saavy kind!

Do you have to reroute the pvc line to the front of the throttle body or can you plug the line off? In the video it doesn't say anything about rerouting the line.

Yes you must plug the vaccum and take that hose to the passive side and tee in this will draw the hydrocarbons into the engine before the throttle body. Dan gadgetman Mo.

There is an easier way to achieve the PCV adaptation, and will keep the vehicle in compliance.

Simply take a vac cap with an O.D. (outside diameter) slightly larger than the opening to which the hose is attached and insert it into the hole.

This worked very well with a 93 Chev TBI Silverado I did yesterday...

You will want to use good old-fashioned rubber, as the vinyl caps are a little thin for my tastes! After all, we want it to STAY there!