1995 mazda mpv cranks with intermittent no start no injector pulse

misfires can be from electrics( HT leads -plugs -coil/s ) and also be from injectors ( low fuel pressure --dirty injectors -pulse problems --electronic). Run the codes to find if it is a random problem or a specific cylinder misfiring to point you in the right direction.

problem could be in the crank angle sensor or power transistor to the coil pack.

Only on a ford

Do you not hear the fuel pump come on?

Do you have spark or injector pulse when cranking?

More than likely the starter solenoid has burnt contacts in it, this is a common problem with all Denso designed starter motors used in almost all Japanese cars and light trucks. You can either try and find a solenoid or just replace the starter. The solenoid can be repaired if you can find the contact kit for it, most are available on line for about $20, just google it.

Assuming you've checked the battery for a possible short and both the battery and the starter for loose connections, no click sounds like a faulty starter solonoid, which could work intermittently.

You probably have a bad ecm. These engines used the same ecm that the injected b2200 used and they had a lot of problems with capacitors that leaked and damaged the etching on the ecm's circuit board. If you do indeed have 12V on one side of the injectors and no pulsing ground from the ecm, then the problem either in the ecm or the wiring between the ecm and the injectors. When you say good ecm, have you tried a known good one?
If you're really good at desoldering and repairing pc boards, you can fix it yourself, all you'll need is a 47uF capacitor. Or you can send it out.

http://www.avproecm.com/mazda.htm

Have you checked for injector pulse and fault codes? Do so.

Camshaft Position Sensor-On top of engine Operation The Engine Management System (EMS) uses the camshaft position sensor to manage sequential fuel injection and as part of misfire diagnosis. The EMS constantly monitors the number of pulses on the signal circuit. The EMS compares the number of camshaft sensor reference pulses and the number of crankshaft position sensor reference pulses received. If the EMS receives an incorrect number of pulses, Diagnostic Trouble Codes (DTCs) should be stored in the EMS. Some engine management systems will then default to multi-port or "gang-fire" injector operation. The camshaft position sensor signal is required to sequence the injector operation to the proper cylinder timing. If the camshaft position sensor or circuit is faulty, most engines will start. However, the EMS misfire diagnostic will likely be affected.
The following symptoms can be caused by an intermittent wiring connections or faulty signal to the EMS.
Related Symptoms

• Extended crank time with a cold engine
• Intermittent rough running
• Unstable idle
• Bucking
• Hesitation
• Stumble
• Chuggle
• Poor fuel economy
• Stalling on acceleration

YOUR BEST BET IS TO GO AHEAD AND REPLACE YOUR FUEL INJECTORS. BY POURING GAS IN TO YOUR INTAKE. YOU KNOW ITS GOT TO DO WITH YOUR FUEL SYSTEM. I TAKE IT YOUR CHECKING FURL PRESURE ON THE CHECK VALVE ON THE FUEL RAIL FOR THE INJECTORS. REPLCE THOSE AND YOU SHOULD BE GOOD. JAKE.B

When you replaced it with a used one , it was a gamble and one you lost ,time to buy a new one ENJOY