My isuzu pickup 1992 2.3 has a misfire, i already change the sparkplugs , ignition wiring, ignition rotor , fuel filter, air filter,oxygen sensor and its still has a very small misfire i really need some help .

How do we get rid of them without having to replace a lot of parts?

I've replaced everything except the proportioning valve

Has new fuel filter pump cap rotor wires plugs carb

I am at a loss on how to fix it myself

I've got an old Isuzu pickup with a diesel motor. Does anyone know a good mechanic with the competence to work on it? I've searched all over but can't find a mechanic. I even looked on but no luck. They have a lot of shops there but nobody in my area that works on Isuzu diesels. I'm in San Jose, Ca.

The reverse lights are intragrated in the neutral saftey and I don't want to loose them.

oil leaks from fuel pump and it did have a rubber hose on it. where does that rubber hose connect to ?

I have repalced the clutch and flywheel.i can not seem to get the clutch to bleed or return on its own