pcv valve

Technical questions and answers about the Mazda Bongo

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flyingdoc

pcv valve

Post by flyingdoc » Mon Nov 17, 2008 5:08 pm

hi,does anyone know if there is a pcv valve on the bongo,if so where is it located? + do they have o2 sensors.
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Re: pcv valve

Post by scanner » Mon Nov 17, 2008 5:32 pm

Petrol or diesel?
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Re: pcv valve

Post by cheffy34 » Wed Nov 19, 2008 10:19 pm

Whats a pcv valve scanner :?:
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Re: pcv valve

Post by francophile1947 » Wed Nov 19, 2008 11:33 pm

cheffy34 wrote:Whats a pcv valve scanner :?:
See http://en.wikipedia.org/wiki/PCV_valve
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Re: pcv valve

Post by scanner » Thu Nov 20, 2008 12:25 am

I didn't ask the question but I suspect as John's found it's a Positive Crankcase Ventilation valve.
The Positive Crankcase Ventilation valve, or PCV valve, is a one-way valve that ensures continual evacuation of gases from inside a gasoline internal combustion engine's crankcase.
I know petrols have to have them and they use the manifold vacuum to do the "Positive Ventilation".
But not sure about diesels (esp turbos) as they don't have manifold vacuum to do the "Positive Ventilation" bit.
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Re: pcv valve

Post by dandywarhol » Thu Nov 20, 2008 12:56 am

........but they do have a vacuum pump..... :wink: There must be some form of crankcase breathing system otherwise the oil seals would pop - I'll have a squint at lushprojects pages sometime.
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Re: pcv valve

Post by cheffy34 » Thu Nov 20, 2008 9:41 am

francophile1947 wrote:
cheffy34 wrote:Whats a pcv valve scanner :?:
See http://en.wikipedia.org/wiki/PCV_valve


Thanks francophile :roll: a breather then :roll:
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Re: pcv valve

Post by scanner » Thu Nov 20, 2008 12:04 pm

dandywarhol wrote:........but they do have a vacuum pump..... :wink: There must be some form of crankcase breathing system otherwise the oil seals would pop - I'll have a squint at lushprojects pages sometime.
I've never seen a diesel vacuum pump that connects to any sort of PCV valve and I don't think I'd like to see one that has been connected to one and sucking on all that goo for any length of time.
The crankcase has to have a breather that's obvious, but I'm not sure it vents to the inlet system anywhere or how.
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