Loosing spark to engine

Chris15 · Postby **Chris15** » Fri Oct 02, 2015 12:29 am

Any info will be greatly appreciated.
My NA6 from time to time decides it wants to have a flame out. It runs and drives for a while then the engine dies.
We have re wired the immobiliser and cleaned all the terminals on the engine plugs including the crank angle sensor plug. It has done this maybe 5-6 times over the last 6 weeks. After fiddling around it runs again. I have not had the issue for 4 weeks since today and have even run it in an Auto-Sprint since it did it last. The car has been sitting for two weeks without use and started first crank. I drove it down the street and it died not even 5 minutes.
I don't think it is a is related to temperature, I am enclined to think it may be the crank angle sensor. When the issue is occurring it does crank but does not fire. It does not starve for fuel so I am not inclined to think it is bad fuel or blocked filter. The fuel pump can be heard when on accessories.
If there is a common issue or if any one has had similar symptoms, I'd love to hear from you.

Thanks in advance.

Chris.

Ice88 · Postby **Ice88** » Fri Oct 02, 2015 9:24 am

Have coils ever been replaced?

Chris15 · Postby **Chris15** » Fri Oct 02, 2015 10:43 am

Not to my knowledge. Is that something that may fail intermittently? And would they revive themselves after approximately 1 hour?

Magpie · Postby **Magpie** » Fri Oct 02, 2015 11:03 am

Try another set of high tension leads from a working car, these can break down as well.

Chris15 · Postby **Chris15** » Fri Oct 02, 2015 11:09 am

There are always exceptions... But I would have thought dodgy leads would cause a miss. This does not miss, it totally fails and when it fires again it behaves like nothing has happened. I appreciate your input but I recon the issue might be something else. New set of leads might go on the list for when I find and fix the issue.

Magpie · Postby **Magpie** » Fri Oct 02, 2015 11:14 am

No problem. So the issue is a complete shutdown and a restart is required not an intermittent miss whilst driving?

A complete failure like that is potentially the CAS. Have you got a noid light to test the injectors when the car has failed or when cranking and it won't start?

Chris15 · Postby **Chris15** » Fri Oct 02, 2015 11:35 am

No. I have a test light or multimeters

Chris15 · Postby **Chris15** » Fri Oct 02, 2015 11:38 am

Screwdriver in lead1 has no spark on crank to the induction manifold.

Chris15 · Postby **Chris15** » Fri Oct 02, 2015 11:42 am

Make that all leads

Magpie · Postby **Magpie** » Fri Oct 02, 2015 11:57 am

If you were in Brisbane I could have lent you the test equipment for the injectors.

These are available in WA http://www.transquip.com.au/products/KC-Tools-11-Piece-Noid-Light-and-IAC-Tester-Set-08392.html

I use a tool by Waekon to test injectors and other of their tools for COP's.

Chris15 · Postby **Chris15** » Fri Oct 02, 2015 2:17 pm

Thanks mate. I am pretty sure I am not getting power to the coils. I think it is auto-sparky time. Thanks for your suggestions.

Magpie · Postby **Magpie** » Fri Oct 02, 2015 2:23 pm

No problems, I was having a miss problem in mine, however it was at revs but did not cause the car to cease working hence the suggestions. The previous time when it would not start (was not missing) it was a failed CAS.

Chris15 · Postby **Chris15** » Fri Oct 02, 2015 2:33 pm

Yeah. If mine didn't start I would be going for CAS but considering it will run then stop at irregular intervals I am inclined to think it is a bad connection somewhere.