Hi everyone, thank god i found your forum, was beginning to think no one out there, i've got a 1990 Galant Gti 4x4 4ws 2.0, was a bargin and performed ok until the sun came out, its weird rain and over cast or early morning it runs like a dream but as soon as the sun comes out and it heats up i get misfires, cut outs, bucking, appalling fumes and some smoke. Replaced Ecu, fuel filter, rewired fuel pump, tried injector cleaner and still no success, something overheating obviously but what? any ideas please?
Cheers!

 

hopefully this helps

http://www.outreach.psu.edu/users/res122/DSM/

 

Its an arcing spark plug wire or something like that.