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Author Topic: C30XEI/C30SE wont start  (Read 2911 times)

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LC0112G

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Re: C30XEI/C30SE wont start
« Reply #15 on: 07 March 2023, 13:34:51 »

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.
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Doctor Gollum

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Re: C30XEI/C30SE wont start
« Reply #16 on: 07 March 2023, 13:55:25 »

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.
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Anvarv

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Re: C30XEI/C30SE wont start
« Reply #17 on: 07 March 2023, 21:09:07 »

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.
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Re: C30XEI/C30SE wont start
« Reply #18 on: 07 March 2023, 22:29:49 »

A nice easy fix :y
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