1990 laser rs turbo isn't firing at the spark plugs.What is the most common problem that causes on spark?

2.5 or 3.3 with or without turbo

try cleaning the the light area og the lacer because dust could have collected in that area.

It could be many things you need to check an see if your getting fire through the plug wire if plug wire isn't firing check the coil an rotor button an module

normally a quick clicking sound means that the battery is low in voltage and amperage,but first check your connectors and the battery posts to make sure they are clean and secure. if you have a tester,check for voltage at the battery,you should be getting 12 volts or more.if you have 12 volts+,turn on the headlights and test the battery to see if it is retaining 12 volts or not,this is known as a load test. if voltage falls rapidly your battery should be changed.if it holds charge pretty well,than put thr battery on slow charge overnight and retry starting the vehicule.nb. the clicking noise is caused by the onboard computer that reads the voltage before startup and under 11.5 volts your car will make this sound.if your car starts put the tester on the battery again and check voltage,it should be 13volts or higher which means your alternator is charging the battery.

you have a miss fire under load the most common cause is a bad spak plug wire, if you give it a good old tune up it should take care of the problem.

spark plugs, spark plug wires, distabutor cap and rotor, air filter, fuel filter, and PCV valve.....good luck

This could be any number of things unfortunatley. I'd start with fuel pressure. Check the pressure. It could possibly be your fuel pressure regulator.

1-3-4-2 witch would be a,c,d,b i think try it you will know right away if it is wrong !

ALL RX Engines are a 6cylinder as they have 2 triangle rotors with apex seals and 4 spark plugs but both rotors in both cylinders fire 3 times each and you have 2 rotors 2x3=6 ..Now if you are running on 1 bank which is 1 rotor then the other rotor isent working due to either the RED rubber seal band on either the front or centre housing OR the centre housing or the rear housing, has a leak and it must either be water or oil UNLESS its in the inlet manifold gasket leaking air in or the plugs on that rotor front or back , if the plug gap has closed up or oiled up .as there isent anything else i can think of .which could cause it.
Ihave built a few of these RX motors and they are without a turbo a lovely engine and go like s--- of a shovel get it going and dont get booked for speeding.. Let me know how you get on Ron

dude, i think you have two spark plug cables cross over. go to your local autozone and find a "firing order" if it was a blown head gasket it would show on the compression test but i'm pretty sure its a spark plug cable cross over.

have ur sensors check 02/ cam angel etc and may b a.f.meter