Vevor - Missing Cylinder Head Part???

I was given this Vevor
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pcp compressor by my neighbor to look at/troubleshoot/fix. He told me it did NOT build pressure; however, I found it didn't even have any air flow. I took it apart and quickly saw that a "part or piece" was missing from the top of the cylinder head. Can anyone tell me what part I need? Tried searching for a parts diagram - found nothing. Unit powers up, fans run and compressor functions, but obvious that air is escaping out of this threaded hold. Any help would be appreciated. I'm new to pcp - on my 3rd day!





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IF that Vevor is like other compressors that hole on top is missing the high pressure air output piping. That might be a big IF as I'm not familiar with the Vevor. It's probably not building pressure as air is just blowing out the top of the HP cylinder. Google "exploded diagram" of that model, you might find what you're looking for.
 
IF that Vevor is like other compressors that hole on top is missing the high pressure air output piping. That might be a big IF as I'm not familiar with the Vevor. It's probably not building pressure as air is just blowing out the top of the HP cylinder. Google "exploded diagram" of that model, you might find what you're looking for.
If its out there i could not find it. Or any like model to look at..lol. If you find it post it.. thanks

Also no lets look under the hood reviews in any of this stuff..
 
I looked too. Weird how little info is out there. I saw an ad that said it was model SG-220V-110V-12VMC. Hope that helps. Vevor makes a number of types of compressor. Maybe contact them directly.
I was thinking the same.

All the forum repair woketube or whatever posts or reviews, anything just ='s a lot of nothing