Originally Posted by DakarM

it's easy use aluminum foil to cover all the electrical stuff (except battery obviously, use plastic wrap) then use gunk engine degreaser. spray it everywhere. use a nylon brush for really bad areas, then use the hose on the gentle shower and rinse everything. TWICE.

then when all done, spray lemon pledge all over the engine bay. it will prevent dust from sticking and will make your engine bay smell like lemon.