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[Anvarv]

Hello guys,

Looking for some help to start C30XEI (same as C30SE) again.

Changed spark plugs and valve seal. (Firing order is not changed 153624) 

After that car wont start anymore.

* Fuel pressure is 2.5-3bar and its okay
* Spark is good
* Mass cables correct, cleaned and good
* 98octane fresh fuel
* Fuel filter new


Any ideas? cuz i dont have anymore

[Doctor Gollum]

Fuel injectors all working correctly?

[Doctor Gollum]

Distributor refitted in the correct orientation?

Don't take this for granted... Had a V6 Granada that barely ran following a plug and lead change. Turned out that the distributor had previously been replaced and had been clocked 60 degrees out. Moving the leads one post round cured that.

This won't change the firing order, but it really messes with the timing of the spark vs fuel delivery and consequently the combustion process.

[Anvarv]

Thanks for fast replys!

Didnt turn the distributor and i think timing hasnt changed. (also distributor cap is not 180c wrong, its correct)

Injectors and car worked 3 weeks ago. Today there is no even pop and bang in the combustion chamber.

Compression test was 10-11bar in every cilinder.

[Doctor Gollum]

It needs fuel, spark and air to run. Something is missing.

Were the plug leads also changed?

Anything else unplugged in the process?

[Anvarv]

Plug leads are used, but in good condition and clean.

At the moment i fount out when i crank, i have only 1.25V of power in injector.

Should it be 12V?

[Doctor Gollum]

Does it state the working V on the injector itself?

They're driven by the ECU, possibly via a 12v relay, so it's possible that the 1.5v is the reference voltage. 

You didn't say if the leads had been removed from the distributor or not

[LC0112G]

One end of the injector should be at battery voltage - 12V ish - when measured to chassis/battery negative terminal. If it isn't then either the injector relay has packed up, or a fuse is blown.

The ECU grounds the other end of the injector to operate them - but only for a few miliseconds at a time. You won't be able to measure 12V across the injector plug/socket itself with a voltmeter.

What sort of car are we talking about since you mention C30SE? Is it Carlton/Omega A/Senator?

[Anvarv]

Does it state the working V on the injector itself?

They're driven by the ECU, possibly via a 12v relay, so it's possible that the 1.5v is the reference voltage. 

You didn't say if the leads had been removed from the distributor or not

Sorry, yes they were removed.

Firing order is 153624. Double checked.

One end of the injector should be at battery voltage - 12V ish - when measured to chassis/battery negative terminal. If it isn't then either the injector relay has packed up, or a fuse is blown.

The ECU grounds the other end of the injector to operate them - but only for a few miliseconds at a time. You won't be able to measure 12V across the injector plug/socket itself with a voltmeter.

Where i can find relay for injectors?

It is Omega Evolution 500.

[LC0112G]

Where i can find relay for injectors?

It is Omega Evolution 500.

Assuming the EVO500 is the same as a normal C30SE Omega A, then it'll be in the engine bay, left hand side (same side as the steering wheel on a LHD car), just behind the suspension turret. There will be 4 or 5 relays and a bunch of fuses there.

It's possible the relay is activated by an alarm/immobiliser system. Have you got all the correct alarm fobs?

[Anvarv]

Got it.

Much green in those relays. Gonna clean them later.

There is no alarmsystem.

[Doctor Gollum]

Does it state the working V on the injector itself?

They're driven by the ECU, possibly via a 12v relay, so it's possible that the 1.5v is the reference voltage. 

You didn't say if the leads had been removed from the distributor or not

Sorry, yes they were removed.

Firing order is 153624. Double checked.

One end of the injector should be at battery voltage - 12V ish - when measured to chassis/battery negative terminal. If it isn't then either the injector relay has packed up, or a fuse is blown.

The ECU grounds the other end of the injector to operate them - but only for a few miliseconds at a time. You won't be able to measure 12V across the injector plug/socket itself with a voltmeter.

Where i can find relay for injectors?

It is Omega Evolution 500.

Mark one lead and post with something visible, then move all the leads one post to the left. If no change, one to the right. And so on

[Anvarv]

So.

Cleaned the relays and no victory.
Also changed some relays to make sure.

When ignition ON, there is 12V in the injector harness when voltmeter is from injector pin to battery negative terminal.

[Doctor Gollum]

And the leads?

[Anvarv]

And the leads?

Fine, right order and all good.

[LC0112G]

So.

Cleaned the relays and no victory.
Also changed some relays to make sure.

When ignition ON, there is 12V in the injector harness when voltmeter is from injector pin to battery negative terminal.

Well, that means the injectors are getting the supply they need, so the relay is OK. I'd be tempted to pull the fuel rail off complete with the injectors, and then crank it over. You should see squirts of fuel out of each injector as you crank it over (put your cigarette out first !). If for do see squirts of fuel, then chances are the fuel side of the equation is Ok, so your problem is likely ignition. No squirts of fuel, then it's a problem with the ECU not driving the injectors for some reason.

Or if you've got a spare injector, unplug the loom from one injector and connect it to your spare. As you crank it over you should be able to feel/hear the injector click.

I don't know what sort of injector drive the EVO500 has. Early C30SE's used single batch firing (all injectors fire at the same time). Later C30SE's had two banks of 3 batch fire (3 injectors all at the same time). And C36GET (Lotus) has individual control of all 6 (Sequential Fuel Injection). 

Anyway, a fault in the wiring between ECU and injectors will stop all the injectors working on the early C30SE's, or stop half the injectors on the later C30SE's, or stop one injector on the C36GET. So depending on what the EVO500 has will affect how many injectors stop working.

[Doctor Gollum]

And the leads?

Fine, right order and all good.

I am not asking about the order.

I am asking about the lead positions on the distributor cap.

If they're two or three posts too far around the distributor cap, then it won't run even if they 'are in the right order'.

And as long as the points, rotor arm and condenser are good, the distributor will produce six sparks per rotation for as long as there is power in the battery and the crank is turning, so from a diagnostic perspective, you will appear to be getting spark. But it won't do anything if it fires at the end of the exhaust stroke.

The firing order may well be 153624 on the engine but on the distributor you may have it set up as 624153 for example still the 'correct order in a continuous sequence.

It might seem stupid, but it is usually the stupid things if everything individually seems to be working.

[Anvarv]

Its alive!

And the same issue and right answer below.
Did a timing check and turned distributor counter clockwise about 60 degrees.

Fired up nicely and sound great again.

Thank you all for help!

Distributor refitted in the correct orientation?

Don't take this for granted... Had a V6 Granada that barely ran following a plug and lead change. Turned out that the distributor had previously been replaced and had been clocked 60 degrees out. Moving the leads one post round cured that.

This won't change the firing order, but it really messes with the timing of the spark vs fuel delivery and consequently the combustion process.

[Doctor Gollum]

A nice easy fix