well i live in ireland so my temps will be pretty much the same as yours. as i said i bought it second hand and i have changed the sparkplugs & plug leads. the only thing i have not changed is the rotor and the ditributor cap. i took it in to honda dealer and he says it is fine. but i think he wants me to send it in and he can charge me through the nose to fix what he can without touching anything. oh and i have changed the oil and filters like the air and oil.