I recently bought a GTE to fly about in.

It runs great when your on motorways etc, but when idling and slow, traffic driving its a nightmare!

It drops right off and almost stalls on idle, causing the oil pressuer light to light up, and kangaroos in traffic.

I found that a screw-in brass plug, with 2 pipes coming off it was melted off!!

I replaced it (right hand side, screwed into inlet) but NO DIFFERENCE!!

What is the thing I replaced?