Video of my S12 sounding drunk... help!

Dr Silvia · #1 21-05-2010, 09:59

erm, well theres a special tool which consists of those bits, god knows what they called it though. I'm not into paying excess if i can heath robinson something together. the resistor and you multimeter on continuity mode would do the trick in most cases too.

JackieFan · #2 21-05-2010, 11:06

Is it just my PC or does it sound like that's not missing once the engine actually gathers pace?

JackieFan · #3 21-05-2010, 11:16

You could also try checking the ECU for fault codes.

http://www.nissansilvia.co.uk/vbb/sh...ht=fault+codes

Dr Silvia · #4 21-05-2010, 12:06

lo-fi web video doesnt help, but it does seem less pronounced, hence the compression test.

londonsilvia · #5 22-05-2010, 13:25

i got the plugs out today...

no.4 is slightly rusty on the top and blackened at the spark end
no.3 was wet from oil, blackened and not so tight as the others
no.2 was blackened
no.1 was blackened and was impossible to get off as it was on so tight

http://img269.imageshack.us/i/22052010392.jpg/

http://img525.imageshack.us/i/22052010391.jpg/

but this is probably due to sustained missing from trying to fix it? its no.3 i am concerned about. i split a load of oil on the rocker cover through filling up with oil the week before, then after that run it sat for a week which is when it buggered up after 3-5 mins of warming up... maybe the oil heated up and got in there?

also the spark plugs are set to .70mm. in this post alundra shows a picture of the 'stock' plugs gap to be 1mm: http://www.nissansilvia.co.uk/vbb/showthread.php?t=5027

Dr Silvia · #6 22-05-2010, 22:17

was number three finger tight or thereabouts? if it was loose it could cause low compression and a miss that improves with rpm...

Oil on one plug is a little concerning, so would be worth a compression test if tightening the plugs properly doesnt yield results.

londonsilvia · #7 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

wacomuk · #8 24-05-2010, 21:11

check inside the dizzy cap. i have had the center contact jump out before now