i have a 1992 3.5 that has a starting problem.
it was running fine . then it developed a miss fire, and now it wont start at all.
its not even firing.
its getting fuel and a spark
dont know what is causing it.

 

Does it have a code reader/display? Can you measure fuel pressure?

If fuel pressure is good, suspect spark is not making it to the spark plugs. Maybe try new rotor, cap, wires. Look for signs of tracking on the cap. Maybe try cranking it in the dark to see if sparks are leaking out.

 

does not have a reader.
its getting fuel and spark at the plugs, but its a yellow spark, so i think it is to weak.

 

Maybe try a new coil or distributor amplifier.

 

changed the coil, and fitted a new amplifier .
still no go.

 

How is the rotor/cap condition?

 

the cap is good it looks relatively new.

 

small probability....did you check the inertia switch?

 

Inertia switch is designed to cut power to the fuel pump after a crash. Do you know how to measure fuel pressure?

 

cant be the switch. its getting fuel.
i have managed to get it to fire, but it still wont run.