Question about Ford Mustang

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THE PCV Valve hose is collapsing due to excessive suction from the engine. I've already changed the PCV & the EGR valve but the problem continues. I was told to change the hose a rigid one to avoid the hose from collapsing, however it seems that the suction is excessive as I can hear from within the cabin of the vehicle when driving.

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HI. First you will need to make sure that you have inserted the valve correctly. Make sure the valve is pointed in the right direction. If it is installed incorrectly, this will induce excessive pressure on any hose you may install. Next; make sure that the hose is not clogged with carbon. If you have not changed the hose, i suggest to do so, asap. Make sure the new hose is stronger and ridged. Usually, hot oil and engine heat will weaken the hose if it is stock or not strong, thus causing the weak hose to collapse under pressure. The affected hose is usually connected to the intake manifold(top hose). I would check that intake gasket to be sure it is not leaking. Change that hose and make sure you don't have massive carbon build up in the valve and intake manifold. This is a huge problem in most fords of this nature. replace the intake manifold gasket if needed.

Posted on Jul 12, 2010

  • Michael Masters
    Michael Masters Jul 12, 2010

    • I would order a plastic tube form the local ford dealership. This particular engine will usually need the plastic tube and not the rubber type. You could also insert a coil spring inside the affected hose to reinforce it, as well.

  • Michael Masters
    Michael Masters Jul 12, 2010


    Any dealership will do or a local certified mechanic shop, as well.



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