[ttleader]

Just got your post on the timing correction. How do I do this if the car wont start? Can it be done without starting and cannot open the jpeg despite regestering.

 

[bonciumarius54]

Just got your post on the timing correction. How do I do this if the car wont start? Can it be done without starting and cannot open the jpeg despite regestering.

Timing Chain Learning Procedure, Engine Skyactiv D 2.2 Youtube

 

[bonciumarius54]

Tomorrow I'll try this procedure, it's done with the engine off, the ignition on (someone solved it)

 

[ttleader]

Ok... this sound promising as the car acts as if it's immobilised ...but there's no immobiliser problem.
Just waiting for the returm of the PCM and I'll give it a try at the weekend, let me know how you get on Thank you

 

[bonciumarius54]

Am schimbat o alta pompa de inalta presiune, si un calculator motor,,, fara rezultate. sunt blocat

 

[bonciumarius54]

Ok... this sound promising as the car acts as if it's immobilised ...but there's no immobiliser problem.
Just waiting for the returm of the PCM and I'll give it a try at the weekend, let me know how you get on Thank you

I have changed another high pressure pump, and an engine computer,,, no results. I am stuck

 

[ttleader]

I've changed the HPP with the same results. Here is a list of what else I've changed....if you could look at the list and tell me what you've done maybe we can eliminate things already covered
I changed the fuel filter, replaced the High pressure pump and the suction control valve. The fuel rail with the pressure sensor and pressure relief valve. also checked the tank. Changed the cam and vacuum pump. Injectors refurbished, cam, crank, maf and map sensors all work in another car. Emissions harnes replaced and then the front harness including the fusebox in the engine bay.
As I said I tried a starter kit inc PCM, front and rear BCM's DC/DC, unit StopStart unit. Instrument cluster, Starter button, Transponder and key, and the three modules which attach to the fuse box inside the car foot well.
Beyond that I have removed the inlet manifold and cleaned off the carbon. Tested the throttle body, checked the turbo spins freely, checked the exhaust pressure sensor feed isnt blocked, Swopped the neutral switch sensor on the gearbox. Cleaned out the EGR and bypass and changed the starter motor.

The lack of an injector pulse is caused by my PCM not seeing the crankshaft signals, however I'm still not convinced that the PCM isn't just stopping the pulse because something else isn't right.
The reason I still don't think its the PCM is that I've already tried another one and get the same result, and, I had just one injector pulse after moving the car
Does your PCM see the crankshaft signal?
So if you have completed some other tests if you could list them it will help

 

[bonciumarius54]

I changed the engine, the old one had filings in the oil, I stopped the car because diesel was flowing from the high-pressure pump, during assembly a gasket was not installed correctly, I stopped it to replace the gasket, after the replacement I bled the system and since then it has not started. And I started changing the same parts as you, I have no signal at the injectors (It is identical to mine, I have read from you since you started) I am waiting for a complete engine with all attachments and I will try with another engine, I don't know what to do anymore...

 

[bonciumarius54]

No injector pulse

dont normally ask for help.. but i am stumped.. getting spark, getting fuel to the fuel rail, have reset my ecu.. and i still have no fuel coming out of the injectors.. what am i overlooking?? car ran/drove fine yesterday.. it did this when i tried to start it today..

mazdas247.com

 

[bonciumarius54]

No injector pulse

dont normally ask for help.. but i am stumped.. getting spark, getting fuel to the fuel rail, have reset my ecu.. and i still have no fuel coming out of the injectors.. what am i overlooking?? car ran/drove fine yesterday.. it did this when i tried to start it today..

mazdas247.com

I have the impression that someone has solved it but I don't understand it. Tell me if you understand better,

 

[ttleader]

I'm sure someone has solved this as I don't think we are the only ones to have this problem
Unfortunately I'm struggling too and it's a problem for many garages as they too have no idea.
Do you use Forscan as it has an osilliscope function which I have used to map the fuel pressure
I keep coming back to the PCM not seeing enough fuel pressure, it then ignors the crankshaft signal and so doesn't fire the injectors....but I haven't been able to prove that. my next efforts are going to be around the signal sent from the pressure switch on the fuel rail and compare those to a running car

 

[bonciumarius54]

I bought a complete engine today, I'll replace it and we'll see after that..

 

[ttleader]

I will be very interested to hear how it goes. Will you be changing the pcm and associated modules or will you just change the engine and keep the electrics of the original vehicle?
I have my PCM back but when I switched on the ignition the headlamps came on (when not switched on) so apear to have further issues ....I'll keep you informed

 

[bonciumarius54]

I will be very interested to hear how it goes. Will you be changing the pcm and associated modules or will you just change the engine and keep the electrics of the original vehicle?
I have my PCM back but when I switched on the ignition the headlamps came on (when not switched on) so apear to have further issues ....I'll keep you informed

Start the car!! I just changed the engine to the injection

 

[bonciumarius54]

I want to believe that the problem was the injection, it wasn't putting out enough pressure.

 

[ttleader]

Thats Great!!!... When you say you just changed the engine to the injection.... what part are you calling the engine? and does the part you actually changed have a part number?.. Finally does your scantool actually tell you the pressure in your injection system? This infomation would really hep me

 

[bonciumarius54]

I installed another engine on the car, with an injection kit.

 

[bonciumarius54]

The diagnosis I have doesn't show fuel pressure until it starts!

 

[ttleader]

Thank you ...I understand now. That's not an option for me as a another engine would cost the same as the car ...so not worth it. Pleased you got yours sorted.
I will review the fuel pressure info and check that the PCM is receiving the required info...it may well be the reason that the PCM won't let the injectors fire by stopping the crankshaft RPM signal from being recognised

 

[ttleader]

Thank you ...I understand now. That's not an option for me as a another engine would cost the same as the car ...so not worth it. Pleased you got yours sorted.
I will review the fuel pressure info and check that the PCM is receiving the required info...it may well be the reason that the PCM won't let the injectors fire by stopping the crankshaft RPM signal from being recognised

By way of an update: I was focused on not having an injector pulse and having disconnected the Camshaft sensor I had no RPM signal from the Crankshaft sensor at the scan tool...so the engine would never run. (leaving the camshaft sensor connected gives a false rpm signal)
I decided to wire the crankshaft sensor connector to the crankshaft sensor on a Mazda 3 that runs. Cranking the running car sent an rpm signal to the scan tool connected to the non running car leaving only two possible causes for no rpm signal. 1 faulty crankshaft sensor (replaced twice) or 2 faulty reluctor ring.
I removed the sump to find that the reluctor ring was damaged in such a way that only a partial signal was sent and thus no complete rpm signal. I also found that the no1 con rod was bent in an S shape and had contacted the reluctor ring causing the damage
Remedy: Bend the reluctor ring back to a circle and replace the piston and con rod
The car now runs and has equal compression on all cylinders
Recap
I was told it just stopped
Initally had no fuel pressure...filter, pump, fuel rail and SCV changed.
Checked all sensor and wiring ...all ok
Complete starter kit tried with no change
Cleaned out the inlet manifold and EGR valves
Realised that there was no Injector signal
Cause: Reluctor wheel damaged along with No1 conrod
Engine not original
Once started the intercooler to throttle body pipe came off as it was short by 40mm
The turbo actuator arm fell off as there was no retaining clip causing the exhaust pressure sensor to blow apart.
It's very possible that the engine was replaced with a unit that had been hydro locked as I've only ever seen an S shaped conrod that has failed for that fault
Nine months to get to the bottom of this One week to fix it!