Jeff

 

Thanks for reply do you happen to know of anyone with the diagnostics and knowledge to help out with my car im in Fareham Hampshire, the only other thing i have noticed is when trying to start it the cat over temp warning light comes on but does not stay lit never seen it before so not sure if it is of any relevance to problem, i need someone to check car over to point me in the right direction before paying out for parts or recovery to a garage.

As i said in last post checked fuses charged battery it did very briefly fire up for about 10 seconds then died again.

 

Simon

Hi Simon, sorry I cannot help you with any help in your area, however there a few things you could check yourself if you have a litte time.

 

So as you said it tried to start and then died may point to either a flooded engine or maybe a faulty spark amplifier (ptu).

 

 

SPARK

 

Now you need to first establish if there is a spark, remove a (any) coil pack ( 2 x 12 mm bolts) and either fit and old sparkplug or insert a small scredriver into the coil pack output and place it close to the engine metal, try turning the engine over to see if there is a spark, if there is go to the un-flood proceedure below and if not the most likely issue os with either the ptu or the cas unit and either of their connections, the cas unit ( equivelent of a distributor) is located on the front black plastic cambelt cover and is a round silver unit with a single connection plug at the 3 o clock position, make sure this is firmly connected. The ptu is located on the exact opposite side and is a silver square box with cooling fins and two cable connections, if the fault lies with a conector here it will most likely be with the left hand lower one, again clean with WD40 and a knife blade.

 

UNFLOOD

 

First a flooded engine is often caused by a bad connection on the temperature sensor, this is located on the alloy pipe running across the front of the engine behind the fan blade, there are two sensors there, the larger of the two with a yellow connector in is the one you need to unplug and clean the both the connector and the sensor connection with some WD40 and a knife blade.

 

 

Once the connection is ok, then you need to unflood the engine, remove the fuel pump fuse located in the slim black box next to the brake master cylinder on the drivers side underbonnet area, it is actually marked on teh lid which fuse but it is easy as its the green fuse nearest the engine.

 

With the fuse removed turn the engine over for around 5 seconds with your foot flat down on the accelerator, pause and do it again for 5 seconds and keep your foot down on the accelerator, pause once more and repeat. Now switch off the ignition and replace the fuse, now attempt a restart but this time don not have your foot on the accelerator, it will either start or cough and try to start if it does this yoiu will need to go trough the unflood proceedure again, failing this remove at least the first four spark plugs and clean and dry.

 

There is an inbuilt self diagnostic that can give some codes but is limited on what it can tell, maybe worth doing this, see link here ( has pictures too)

 

http://www.ttzd.com/tech/diagnostic/diagnostic.html

 

Hope that helps and update to your progress.

 

Jeff TT

If you want to plug it in someone on this list might be able to help

 

http://www.300zx.co.uk/forums/showthread.php?99968-Datascan-or-Consult-owners-list