My fiat palio 1.2 imp model 2000 has developed a serious coolant leak from a freeze plug within the gear box. The sump oil is also coming out of the dipstick hole. The tappets are noisy. I have decided to have a compete overhaul done to this engine. I would be grateful if someone out there could give me ideas. Another thing is, I have searched in vain for the WORKSHOP manual of this car.