Stop in for a cup of coffee

halifaxhops said

OK who knows 99 5.9 engines? Just curious what to look out for. Found a full set of FSM's for it and on order. Have to figure out what break lines to get tons of different ones for that year. Just get it started and reverse some "mods" like a amp in the rear seat floor etc. Sure there will be other surprises also.

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Get an ignition coil. They are a common failure.
There is a steel tube on the front of the engine, heater connection i think. They rust out and leak.
If water pump hasnt been replaced, then thats something else to expect. Crank sensors fail occasionally. Passenger side back of engine, in bellhousing.
Fuel pump is a returnless system,pressure regulator is built into pump. No fuel filter if i recall, also in fuel pump.

earlier models had intake manifold leaks,causing lean issues,pulling air from crankcase.