Probably a cracked head.

Or the head is bend.

Or bad us made headgasket

Going to make a leak down test and see what it says.

Leakdown won't show it.

 

You need to remove the exhaust from teh head and look for these

 

Well the engine runs but have a very high idle when cold, eaven on summer.

 

Where can i find the choke on my engine?

i belive there must be something wrong whit it.

If it's a carby engine, only the 85's had a manual choke, all the rest are automatic

I see, then there is something wrong with the automatic, and i dont even know where to begin.

The thing is that when warm the engine never goes down under 1000 rpm,