PCV / High idle Escudo/Vitara 1990 G16a 16v

2993 Views 33 Replies 6 Participants Last post by Bex, 2 mo ago

Suzescudo90

Discussion Starter · 8 mo ago

Motor vehicle Automotive exterior Vehicle Automotive tire Automotive wheel system

Hi lads, looking to get some advice on a problem I’m having with my escudo/vitara. As shown in the photo I’ve two hoses labelled one PCV and the other I’m not sure of (hoping someone can tell me if I’m correct in saying that is the PCV and not the one labelled with the question mark). Anyway when the hose labelled PCV is connected between the rocker cover and the EPI the engine idles somewhere between 1500-2000 rpm and as soon as the hose is pulled out from the rocker cover the engine dies. Currently I’ve the hose plugged with a bolt and the engine idles a lot better down around the 900-1000 rpm mark but still not perfect. Just from what I’ve been reading I think it may be a problem with PCV value (dirty etc), however I can’t seem to locate the PCV valve, I can’t see it at the rocker cover side or the EPI side. If someone could point me in the right direction that would be greatly appreciated. Thanks Aidan

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fordem

· #3 · 8 mo ago

Suzescudo90 said:
I can’t seem to locate the PCV valve, I can’t see it at the rocker cover side or the EPI side. If someone could point me in the right direction that would be greatly appreciated. Thanks Aidan

The PCV valve should be in the rocker cover with the hose you have labeled PVC attached to it - kind of hard to miss, if it's actually there -

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fordem

· #6 · 8 mo ago

No - I've been puzzled by that.

My suspicion is that the vehicle is an Escudo rather than a Vitara, but when I look at the Escudo parts listings, they seem to show the PCV in the same location. I don't know someone removed the valve and welded a barb in it's place, but the cylinder head cover doesn't look like any welding has been done. Usually there's a hole with a rubber grommet that the PCV snaps into.

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fordem

· #8 · 8 mo ago

That is a help, would you by any chance know where the PVC valve was on that engine? Suzescudo, PM me the VIN let me see what I can find out

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fordem

· #14 · 8 mo ago

Bex said:
Assuming that the JDM does not have a PCV.

The JDMs, at least the ones I've seen, all do - PCV valves have been around for decades, the engines I grew up around didn't have them, but anything manufactured in the last 40~50 years will.

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fordem

· #16 · 8 mo ago

The challenge, at least for me, is to identify which vehicle the engine came out of - if I can do that, I might be able to find where the PCV valve was on that vehicle - all we know is that both Ranger's engine AND the engine in Suzescudo's car are JDM - the right angled distributor indicates it's probably an Escudo, but what year? I don't feel like searching through a dozen parts catalogs, and that assumes that the cover came on the engine.

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fordem

· #18 · 8 mo ago

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Based on this diagram (which is a 90/91 Escudo) - the PCV Valve could be #29 located on the cam cover side of things - or - #25 located on the intake manifold side of things.

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This is the PCV valve if it's on the intake manifold.

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This is the PCV valve if it's on the cam cover.

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fordem

· #23 · 8 mo ago

Suzescudo90 said:
Whereas the vehicle the swapped engine came out of may have never needed a PCV value.

The early Escudo apparently used two different styles of PCV valve - see post #18 for the details - where you might run into a challenge is if the intake manifold and the cam cover are from different engines and neither has the fitting for the PCV valve, one will need to be modified.