I guess maybe it's just cheap thin exhaust pipe and I'm going to assume that is the only reason there is that fan that blows on it just a few inches after the head.

Plug looks good to me.

And yes I would love to check the valves myself. Does anyone know the specks? I cannot find them either.

The water pump was leaking since I bought it and very long story short it ended up getting a update where they changed the whole side of my engine which apparently fixed a few issues such as a oil leak.

And I was hoping I could do some tests other than pulling the plug which I am just about to do

I have a 2016 zforce 500 ho. Just got back from the dealer for a water pump update. In there story is says they did a valve adjustment. Weather that has anything to do with it or not I don't know. This dealer is a absolute p.i.a to deal with. I'll try attatch a video.

Looking for ideas what could cause it. It's got a brand new air filter also

All I have left to do is paint them up and they will be fully finished.  Not a bad fit for a shade tree welder.   

Any chance you could
Post more pictures?

Hello new to the forum. I have a 2016 zforce 500 and am having a lot of troubles finding any info on anything about it lol. I have spent hours seaching this forum and have found a few things that I must do such as relocating air filter and battery. But I have a few questions.

1st is there any tricks to adjust clutch for some more torque? Would definitely like to get rid of some top speed and gain some bottom end.

2nd how about exhaust upgrade? Only thing I can think of is to make my own.

3rd how about a "chip" / programmer or new injector  or anything of the such.

And my 4th has nothing to do with power but will the 800 arched control arms fit my 500??

We mainly use the machine for hunting80% of the time. Taking my dogs for a run the other 20% so it's very rarely slow going and would be nice to have the pulling power when need be.

Thanks in advance any and all Info is much appreciated.