Video of my S12 sounding drunk... help!

londonsilvia · #1 22-05-2010, 23:37

no.3 was medium to take off with a tool, so pretty easy.

what do my plugs look like? ive been reading when they look like that along with the white tops its a problem with the fuel mixture i.e. too rich.

what are the spark gaps for NGK Rs? they are .70mm.

cheers

umpkin · #2 23-05-2010, 07:03

how old are the plugs?? i think for piece of mind i would change them anyway, ive had similar trouble before with a dodgy spark plug, also was the problem there brfore you changes the plug leads, as our forklift at work used to run on 2 cylinders, untill you revved it, and that was leads.

Dr Silvia · #3 23-05-2010, 09:48

just quickly about the plugs.

being an NGK r really doesnt say much about the plug. Its detailed specifications are buried, encoded in the part number, for example bcr6es and bcr7es. the numbers relate to the heat range of the plug

a 0.7mm gap shouldnt cause any problems although for mild tuning is a bit narrow. From memory until you're running aproximately a bar then a 0.8/9 mm gap did people fine with the heat range 7 plugs.

londonsilvia · #4 23-05-2010, 11:42

they are bcr8es plugs. ive set them to .9mm...

the car is running 1 bar of boost.

i will put them in today and fingers-crossed it will work.

irish s12 · #5 23-05-2010, 12:52

I'd put them back to .7 tbh otherwise you might get the spark blown out at that boost.
A compression test is what I'd be doing first on this car.

Dr Silvia · #6 23-05-2010, 14:30

ye, 0.7 on 8s is right for that boost

londonsilvia · #7 23-05-2010, 16:37

well just put it back together...

started it after 20 seconds of cranking...

it began missing, but then kicked into life with all four going... after about 20 seconds of being on all four, it started to resist and drop onto three, then it wasnt long before it stalled.

whenever i put my foot on the accelerator it began to die.

why would it be so hard for it to kick into life and then die after 20 odd seconds of being fine?

PukkaSilvia · #8 25-05-2010, 11:31

Quote:

Originally Posted by Dr Silvia

ye, 0.7 on 8s is right for that boost

Yup i fitted these to this car last summer, Have faith David!.

All correctly torqued up too..

Do a compression test. But get all the plugs out first.
Try using a decent 16mm deep sparkplug socket,UJ and extention bar. It will get them all out

Aslso check no split oil has gone in the injector contacts