My car is having missfiring issues which some of you would have read about recently and ive narrowed it down to cylinder number one not firing.

(Running on 5 cylinders)

 

Note:The connector on number one is the only broken connector. (still seats ok)

 

 

All injectors are clicking

All coilpacks are working

All Coilpack connectors are working

 

So i fiqured that it must be the spark plug, so i removed the plug and its covered in black powder (Overfueling) which says again that its not sparking

 

But its only just dawned on me...

 

Its dry... Does that matter?

 

EDIT- CAR NO LONGER STARTS!

 

Ive installed a new spark plug in cylinder one (same type) and it made no difference to the car running when i connected it up, i turned it off and then on again and it will no longer start.

 

It has a new battery and the fuel pump is priming

It is turning over but will not fire (no fuel)

All injectors are clicking

Ive cleaned the PTU connections (series 1)

Ive cleaned the CAS connection

There is a lot of black fuel marks on the road behind the car (possibly from 5 cylinder problem)

Ive removed the new plug and it is dry

 

UPDATE: I have fuel but no spark on all cylinders

 

Spark plugs are wet and getting fuel

 

 

New Series 2 PTU installed, Still not firing

 

What else makes it fire?

 

 

 

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Edited January 3, 200916 yr by petes21st

i am no expert by any means, but you may have a wiring break down. possibly a chafed wire that delivers power to the plug therefore no spark. might be worth checking the loom for correct current to that plug.

 

as i said i am no expert, just read your previous posts about this and it looks like you have gone down all avenues.

 

al.

Im getting no spark on any cylinders now, 2 days ago cylinder one had no fuel which was causing it to run on 5 cylinders, 2 days before that it was missfiring, 2 days before that it had a high idle.

is it a new series II ptu?

Pete, gonna sounds nuts, but make sure your loom connector is secured into your ECU, ive seen this before where and old mate was getting random issue he couldnt explain.

 

On Z's there is a nut that holds the connector in place, if thats come loose...well you know.. worth a look at least to eliminate it.

As alanz said, if its not your PTU could be the loom itself.

Just been fiddling with the ECU loom, and it ok, its seated correctly

 

Its funny you should mention this as i have had trouble with the ECU before, after i had it chipped i had a problem with the electric fan staying on but that got resoldered and its been fine since.

 

Are there any fuses i should check?

is it a new series II ptu?

 

2nd hand mate but its looks in good nick and from what i know they dont breakdown, is this wrong?

2nd hand mate but its looks in good nick and from what i know they dont breakdown, is this wrong?

 

Only one way to find out bud, put your series 1 ptu back in :nana2:

but if they're both buggered?

but didnt you say it was still sparking on 5 cylinders with your S1 PTU? and its not firing at all on the S2? Put your S1 back in and see if it still fires, if it does then looks like both PTUs = buggered or the connections at least. Or you have your original unknown problem and your S2 PTU is duff.

If you've been switching the engine on/off from cold, you may have washed the bores?

 

Have you checked for compression in cylinder 5?

but didnt you say it was still sparking on 5 cylinders with your S1 PTU? and its not firing at all on the S2? Put your S1 back in and see if it still fires, if it does then looks like both PTUs = buggered or the connections at least. Or you have your original unknown problem and your S2 PTU is duff.

 

No mate, a few days ago i had an issue with it running on 5 cylinders which i narrowed the problem down to no spark on no.1, so i replaced the spark plug which made no difference, turned it off then tried to turn it back on and it wouldn't start again

 

Narrowed that down to no spark at all, replaced with S2 PTU and no change

 

 

Si, i cannot find an adaptor for a 10mm sparkplug for a compression tester anywhere local mate so ive not bought one yet

Edited January 3, 200916 yr by petes21st

Have you checked the connection to the CAS ? Loose plug there can cause no spark at all.

ok, i have both spark and fuel but its still not starting,

 

i can hear the fuel pump, ive pulled 3 of 6 spark plugs and they're all wet with fuel and spark.

 

I have used a torch to look inside the cylinder and they're are not flooded and do have fuel injecting when trying to start.

 

I have cleaned the CAS connection

My ECU is now giving me a code 13 for 'Coolant Temp sensor' Ive give it a little scratch clean and the car seems desperate now to start. It seems one click away from starting.

 

Any help?

Are there any places to check the wire loom for a good signal? what resistances should i be picking up?

 

My guess is that its a wire loom issue now but i havn't checked any resistances yet so any help here would be appreciated

ITS WORKS!

 

She's up and running people, all spark plugs were removed and dried out and the engine cranked over to de-flood the engine, refitted and she runs!

 

There is still a missfire but she now runs on all 6!

excellent!!!!!! well done pete.

just goes to show, keep going and you will get there.

pleased for u mate.

 

al.

ta mate

Unplug your MAF and try starting without it. Hold your throttle right down to clear any excess fuel.

Oops .......... ignore my last post. I thought I was reading the last page but wasn't :slap:

ITS WORKS!

 

She's up and running people, all spark plugs were removed and dried out and the engine cranked over to de-flood the engine, refitted and she runs!

 

There is still a missfire but she now runs on all 6!

 

I had a similar problem once when I had a set of HKS plugs that had done about 10,000 miles. The car just wouldn't start. I replaced them with a set of OEM NGKs and it has been fine since.