No Spark Problem, Help Me Locate The Problem

[ECR 033]

G'day,

I've posted a new topic as a last resort....

Details: 89 r32 GTR, Just put my re-built engine back into my GTR along with a new sigle turbo setup. (removed complete aircon components aswel)

Problem: i have no spark.

Can you guys help me track down the promblem... help me back track starting from the spark plugs, it could be just a plug off somewhere, i have spent five hours looking at plugs...there are a couple plugs i can't find a homes for either, one being a 2 pin plug that comes out the back of the injector plug loom...its short and doesn't reach anywhere.

any help would be geat guys. cheers.

[ECR 033]

I also checked ECU

And got error codes: 43 and 13

which are engine temp system and thottle position sensor.

but this shouldn't be related

[White GTS-T]

Do you have injector pulse?

[ECR 033]

Do you have injector pulse?

not sure, but the plugs are getting wet, just checked the coilpack plug wires and i have earth and then when i connect the test light to the positive side of the coilpack plug and wind the engine over the light flashes...

......... New Problem, got 2 good batteries, but the egine cranks over like the batterys flat....????? winds over real slow ???

HELP.......

[joeleo87]

Get it sent to an Auto elec man

[R31Nismoid]

You need to find out if the injectors are pulsing if they aren't, its CAS (Crank Angle Sensor)

[ECR 033]

You need to find out if the injectors are pulsing if they aren't, its CAS (Crank Angle Sensor)

there is nothing wrong with the cas. i went through all that just incase.

the issue is i have no spark... injecors are fine... spark is the issue. i can visually see that the sparkplugs arn't creating a spark.

but before i can continue with fixing that..i need to work out why the engine has started cranking over so slowly... any help would be greatly appreciated.

[R31Nismoid]

well you said you weren't sure if you had injector pulse...

dont shoot me, im just going off what you say.

[skylinekid]

did u ever think ur module may be sending through a weak signal but just enough to give a blip on the test light. remember test lights dont take much to glow. check all ur earths properly and just make sure they are getting a decent surface to earth to. double check also u connected earth wire to the coilpacks down the back. cant hurt to suggest a couple of little things. or at a long shot check fuses in boot underdash and interior.....

also mate engine temp sensor or coolant temperature sensors are vital to wat the computer gets told so if its faulty replace it or it will run like a sack.

Edited September 30, 2008 by skylinekid

[ECR 033]

well you said you weren't sure if you had injector pulse...

dont shoot me, im just going off what you say.

all help appreciated, just trying to sort out the spark problem, as i know that its not getting any.. and the slow cranking is odd also.... its stopping me fixing the spark issue...

i need help with the slow cranking

[skylinekid]

the slow cranking may be ur starter motor giving up the ghost... im no electrician but check that the power wire to the starter is bolted down correctly and the lil (exciter wire) is still plugged one properly. short of that it could possibly be an internal problem. how long have u been trying to start it for

[blind_elk]

Have you got oil pressure? (I know it's not your problem, but you want oil pressure before you get the spark working).

Is the igniter properly earthed? Have you tried a different igniter?

Have you got a good block->chassis earth connection?

[Datsun GTS-25t]

Yeah, definately check your oil pressure and make sure its is up before you fire it up - could be why its is not turning over real easy, lack of lubrication. This is just safe-guard to ensure everything has oil (and that the oil pump has been assembled correctly!) Know this may sound obvious but have you checked your ignition fuse(s) maybe blewn when re-connecting everything?

Good Luck - you will get it going and I bet it's something easy - always has been for me anyhow.

[ECR 033]

Ok,

Fixed cranking problem,

Oil pressure is good

just need to sort the spark problem...

i have a multi-meter but have no clue how to use it....lol.. also have a service manual to tell me how to check the whole ignition system but..(still not sure what readings and values i should be getting on the multimeter? any help there?

also i have one plug i need to find a home for, ill just go get a picture of it and post up... if someone could run out to their gtr and have a look where it goes that would be tops.

thanks guys

[ECR 033]

Picture:

blue circle is the plastic cover that the injector plug wires run through

Red is the 2 pin plug that needs a home

and the green circle is the loom it comes from

this plug may not need a home, but im not sure.

any help appreciated.

[skylinekid]

hey mate think i solved ur problem.... u are missing this.. it sits at the base of ur injector loom....

has a white and a black wire. doesnt lead newhere just goes straight in and straight back out. aka resistor

it has printed on it 0.47 a funny u shape and and f. good luck buddy.

sum more good news after i just had a quick look is that black wire runs to the module harness clip its actually the earth wire. id say thats ur issue.

Edited October 2, 2008 by skylinekid

[ECR 033]

hey mate think i solved ur problem.... u are missing this.. it sits at the base of ur injector loom....

has a white and a black wire. doesnt lead newhere just goes straight in and straight back out. aka resistor

it has printed on it 0.47 a funny u shape and and f. good luck buddy.

sum more good news after i just had a quick look is that black wire runs to the module harness clip. id say thats ur issue

aaaahhhh,

and this plugs onto the plug i mentioned?

does it mount somewhere?

[skylinekid]

it was taped onto the side of the harness buddy. so no even zip tie it doesnt really matter. ive just got a spare harness lieing on my computer room floor so just thought id have a peak lol

Edited October 2, 2008 by skylinekid

[ECR 033]

it was taped onto the side of the harness buddy. so no even zip tie it doesnt really matter. ive just got a spare harness lieing on my computer room floor so just thought id have a peak lol

so you're saying it pluged onto that plug i showed?

[skylinekid]

precisely......... has 2 male connection inside the plastic case.... then u actually have earth..... ya dig lol