Turns over fine, I replace spark plugs, wire rotor and cap but still fires whenever it want. I performed the secondary spark test and I had no spark. Later I tryed again and starts perfectly. I don't know what is wrong with it. Why sometimes start good and sometimes it doesn't. Help!!!

It is hoped you have replaced the wires that go from your distributor cap to each of your spark plugs AND that the gap on your plugs are set correctly.. Secondly, if you replaced your rotor head, and it is not sparking, it is very possible your rotor isn't making the connection inside the dist. cap.

the only way to verify this is to get your old rotor and put it back on. If it fires, you know your replacement part isn't configured properly.

The firing order is 1342 Number 1 should be marked on the distributor cap . start from there , notice the direction the rotor turns, next terminal on the caps goes to number 3 cylinder and so on. to find number one if the cap is not marked do the following. remove number 1 spark plug and turn engine over till compression is felt, line up the timing marks on the crank pulley and timing cover. remove the dist. cap the rotor is now pointing to number 1 position on the cap.

Check the metal end of the spark plug wires on the cap connection. The core of the wire has to make contact with the metal end .

my guess, is you did NOT replace the wires 1by1.
and messed up the firing order. (engine size not posted)
or
you bought one of this china,no-name POS rotors that fit 3 ways?
or the cap is on backwards
or the wire terms(HV) not seated.

ill assume the dizzy was never unbolted.

never power wash an engine, you force water to places that never must be...
let it dry for a day or 2.

what does FIRE to plugs mean.
i used a grounded tests spark plug , at the end of each spark plug
and there is no spark.

i ask that, because some posters say that , but only mean
the cylinders are dead, and call it no fire.
takes spark, compression and injection and timing to fire.
4 things.

I guess you could have the ignition analyzed on an oscilloscope. Maybe a tech could see something then.
I always heard the only gap was the spark plug gap-the rotor has no gap-are you sure you got the correct rotor? And does it touch the top distributor cap coil wire tower?

Let us know. It is a mystery worthy of a solution.

You may have got the spark plug wires out of sequence.
Reseat the coil wire going to the center of the distributor cap Check the spark plug wires at the distributor against the firing order as follows:
The spark plug firing order is 1 - 4 - 2 - 5 - 3 - 6 The distributor rotor turns CLOCKWISE The engine cylinders / spark plugs are numbered :
firewall 3 - 6 2 - 5 1 - 4 front
Best wishes,
TF

see if you have spark at plugs and fuel.start there. good luck.

Check if any spark or fuel.

possibly distributor cap getting wet. Try this. When it's not starting, remove distributor cap and dry inside and outside with hair dryer on warm setting. See if it starts then. If yes, replace cap and rotor and make sure plug wires are clean.
If it still doesn't start, you may be getting mositure in a wire connector that operates spark to plugs.

Are you getting spark at plugs when it own't start?
Check by getting a spark plug and plugging a spark plug wire into it and grounding the side of the plug. crank engine and watch for spark at gap.

Have you checked the timing belt?