Who is doing the work?

 

Could they tell If there was any leakage marks showing on the Head Gasket when inspected ?

 

since we are at the topic about overheating, my car temperature seems to go up when it idles? any help would be awesome! sorry not a real car person

 

Probably an air lock (bubble)

 

yeah so i had my friend check it out we did this thing what they call 'Burping' which we let the car run and we add more coolant then any air gets pushed out. it seem to work. but now the temp just always go pass 50-65%. sometime it gets that hot then sometime it doesnt, its confusing me alot lol.

 

It's definitely worth using Billman's bleeding method here https://www.s2ki.com/s2000/topic/106...coolant-bleed/

That will really get all the air out.

 

The quickest and best method is jack front of car up high with rad cap off whilst running and topping up slowly.

 

I found when I did a rad swap we ended up with an air lock in the heater matrix.
Had to disconnect the pipe at the bulkhead next the battery to release the pressure, then go back to the Billman method (with the car jacked up as well)

 

I know its abit off-topic but the S2000 is one of the easiest cars i have owned to change the coolant on.

I undo the bleeder near the inlet manifold and fill the radiator up until coolant comes out of that bleeder. Shut the bleeder up and run the car up to temperature occasionally opening the bleeder to let any air come out. The air in the system will end up coming out anyway overtime. I always overfill the expansion bottle when i first change the coolant as it tends to drop a good inch or so after the first run.

 

a lot easer that a number of other cars