PCV Valve

[Rob Furniss]

Local Mitsi dealer want $103.50 for it, has anyone managed to get one from anywhere other than Mitsi or Camskill?
MD183547

Seems to be used on quite a few models:
RVR
Delica
Chariot


Also if I can't suck air through mine does that mean it's knackered?

[kermut]

ive got one at home 50 bucks

[Dras]

The PCV valve should act as a one way valve, so not necessarily. If you are running boost or if the engine backfires, the PCV acts as a one way valve to protect the engine from positive crankcase pressure.

When you shake the PCV valve, do you hear a rattle? If not, you can try to clean it out with a can of carby cleaner. Spray liberally inside, hold both ends and slosh around, drain and repeat till what comes out is clean.

Only blow into the PCV valve, never inhale the crud inside is really not good for your health.

If we call one end of the PCV valve the rocker cover end and the other the hose end (as it has a hose that runs from PCV to the lower intake manifold), what you are aiming for is blowing from the rocker cover should allow air flow, with the least resistance being offered at a gentle blow. i.e. A furious blow should have more resistance than a gently blow, (the difference is only small and I couldn't really notice much difference on mine so don't stress but that is how the PCV has been designed). If you blow into the hose end, you should get a lot of resistance.

Another test suggested by Mitsubishi is to start the car, run till warm and then remove the PCV from rocker cover while the car is still running car. Place your thumb over the rocker cover end of the PCV valve and you should hear the bit inside the PCV valve move and suction on your thumb.

[Rob Furniss]

Thanks Dras, I couldn't hear rattling until I cleaned it out and now can, I will try that test with the engine running and see what happens, cheers mate.

[dstocks]

Ill have spare ones. I have 3 engines in the shed. Can get new ones as well. Have just sent through for a quote

[Rob Furniss]

Ill have spare ones. I have 3 engines in the shed. Can get new ones as well. Have just sent through for a quote

Thanks Dwayne will let you know after i've tested my pcv valve and will have one off you if it's knackered and an intake plenum for my project too
Incidentally, I was at my Sons house the other day and he had a friends AWD Magna (2004 I think) on the drive as he's left it with him for a bit (gone away with the Navy or something) and I popped the hood. Looks like the same PCV Valve.
Also noticed that it had Yellow fuel injectors that looked just like the 275CC ones that i'm after but I couldn't quite see any markings on the side, wasy very tempted to remove his engine cover and take a closer look, i've got the VIN so going to see what I can find out on ASA later.
Edit: Crap, can't find it on ASA, possibly because it's made in Adelaide and my ASA is japan only?
It's a 3.5L 5 speed Tip

[Dras]

PCV valves are supposedly matched to engine sizes. Just because the exterior looks the same, the interior might be quite different.

I would suggest double checking part numbers (which I see you are trying to) before trying it out.

The theory goes that at idle, the engine is pulling a vacuum. Attach a decent enough vacuum to the rocker cover and you can suck the oil out of the engine. Now I would be pretty surprised if in the real world anyone managed to do any damage with the wrong PCV valve but hey, I wouldn't try it on my car.

Keeping the crank case at a vacuum has been shown to provide real performance gains. I have read about setups where people have used belt driven vacuum pumps to achieve this and they do need to put careful consideration into how to handle oil being sucked up, but now I am rambling.

[Rob Furniss]

Nah i'm not after a Magna pcv valve just found it interesting that the pcv's looked the same but I would imagine mitsi would still charge the same extortionate amount anyway. Interesting what you put about vac though.
What I was interested in though are the injectors, look just like the ones I need for my supercharger project but need to confirm (somehow) if it says CDH-275 on the side. I can get them from the states if I need to though but may try here first.

[Bennoz]

Yep, those 275s will work a treat

[dstocks]

OK, got the quote back. I can get new genuine ones landed for around $45.

[Rob Furniss]

OK, got the quote back. I can get new genuine ones landed for around $45.

That's good - less than 1/2 the price that Mitsi here quoted me, I have yet to test the valve but will let you know.
Cheers,
Rob

[dstocks]

less than 1/2 the price that Mitsi here quoted me

Thats not uncommon....

[payaya]

Same pcv is on a Sebring. Call a dealer they should be cheap.

[clint111]

Dwayne, can you also supply the rubber grommet into which the pcv valve mounts?