Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
No codes.. but what i find is i dont have pulse at the ground wire at the injectors.
Let me explain. :
At the injector. I got 12 volts on 1 wire but the pulse wire is not blinking just stay on..
The ECM grounds the injectors and controls the spark, It's either not receiving a pulse from the crank sensor or is defective ( I would check powers and grounds to ECM, missing it will definitely mess up your ECM.) and because of your truck age I would also check all wires from one connector to the other to make sure nothing has happened. You may also have a distributor that uses a photocell and a LED to trigger the crank sensor, so I would check it out and make sure all is clean inside the distributor - I had a Datsun that developed a oil leak inside the distributor and those "windows" got cover and then I could not start it again, it started with a misfire then it moved to a no start. I prefer the metal ring design.
I got pulse at the injector but looks not strong enough. .
The truck still wont turn on .
Will be the same voltage signal from the ecm to the igniter. On the injectors pulse ?
Have you checked for voltage at the fuel injector connector ? With the main relay activated should be battery voltage there. The ECM grounds that voltage completing the circuit. You may also need to check for fuel pressure at the rail and this page may help you.
www.mazdabscene.com/threads/36333/mazda-...el-pressure-question
just be careful when working around the fuel system. Is your fuel pump running ?
The fuel pump is working .. i temove the line from the filter and i use a can and open the swich. And is fuel come out..
And i did it with the yellow conetor and i jumper wire too...
And is fuel come out.
I use starter fluid in the intake manifold. And nothing wont run.
please double check if you installed the distributor correctly, your spark may be way out of timing. If all checks out, you now have spark, fuel (either gas or starter fluid) and air, just missing compression. You may try a vacuum gauge or a compression test, I hope is only a timing problem and not a damaged engine.
Well.. well... im back with the final solution on this mazda..
I learned alot on this 1. Thanks to castironman. For all u help may cont pay back.. but my God will do..
The problem was the distributor
And after install the new one.. wont start.. because i was move 2 teeths.
