Help No spark 8v carb (photos)

[LEWI007]

Engine is the original 12ST 8Valve Carb engine, it will not get a spark but will turn over., not sure if there is any wiring missing or what wires go where.

this is what we have.

red and brown from the coil, supposed to be a plug on the end?? but it has been cut at some point.
http://i253.photobucket.com/albums/hh57/LEWI007/Nova/IMG_20140205_154055.jpg (http://s253.photobucket.com/user/LEWI007/media/Nova/IMG_20140205_154055.jpg.html)

This coil, the correct coil for this engine?

http://i253.photobucket.com/albums/hh57/LEWI007/Nova/IMG_20140205_154109.jpg (http://s253.photobucket.com/user/LEWI007/media/Nova/IMG_20140205_154109.jpg.html)

This black switched live coming from the wires on the back of the N/S Headlight, this is for the coil?
http://i253.photobucket.com/albums/hh57/LEWI007/Nova/IMG_20140205_154242.jpg (http://s253.photobucket.com/user/LEWI007/media/Nova/IMG_20140205_154242.jpg.html)

http://i253.photobucket.com/albums/hh57/LEWI007/Nova/IMG_20140205_154127.jpg (http://s253.photobucket.com/user/LEWI007/media/Nova/IMG_20140205_154127.jpg.html)

These wires for sensors etc..? tehey are all plugged into the correct places as far as i know...
http://i253.photobucket.com/albums/hh57/LEWI007/Nova/IMG_20140205_154258.jpg (http://s253.photobucket.com/user/LEWI007/media/Nova/IMG_20140205_154258.jpg.html)

Apart from this green and blue one, no idea where this goes/what its for ?
http://i253.photobucket.com/albums/hh57/LEWI007/Nova/IMG_20140205_154238.jpg (http://s253.photobucket.com/user/LEWI007/media/Nova/IMG_20140205_154238.jpg.html)

http://i253.photobucket.com/albums/hh57/LEWI007/Nova/1654829_610742888979427_1929389531_o.jpg (http://s253.photobucket.com/user/LEWI007/media/Nova/1654829_610742888979427_1929389531_o.jpg.html)

Whats missing, what goes where, need some info/pics of how this is supposed to be set up.

[Nobby]

have you not earthed the negative side of the coil? The dizzy should be connected up lol

Green and blue wire should oil pressure sensor

[jimbob-mcgrew]

yeah that looks a bit of a mess man, lol.

your missing a connector for the coil there, but should be able to replicate the circuit fairly easily with female spade connectors and extend the broken wires accordingly.

I cant remember for certain, but off the top of my head, the the red and black from the dizzy should go to the lower 2 of the coil, and the black switched live by the headlights goes to the upper left of the coil, the upper right is reserved for the rev counter I think (green wire), which is not needed for running.

once you've got that sorted, youll need to bolt the coil down to the body, as it earths through its frame, or run a well secured wire from one of the 2 holes in its base to an earth point.

you ok with the plug leads ? I think on the 1.2 its 1-2-4-3, but cant remember exactly, Haynes will tell you if you have one.

the dizzy also looks way too advanced, id slacken that off and turn it anti clockwise about 20 degrees (towards the front of the car)

ill have a look at mine later, and tell you exactly which wire goes where :thumb:

[LEWI007]

yeah that looks a bit of a mess man, lol.

your missing a connector for the coil there, but should be able to replicate the circuit fairly easily with female spade connectors and extend the broken wires accordingly.

I cant remember for certain, but off the top of my head, the the red and black from the dizzy should go to the lower 2 of the coil, and the black switched live by the headlights goes to the upper left of the coil, the upper right is reserved for the rev counter I think (green wire), which is not needed for running.

once you've got that sorted, youll need to bolt the coil down to the body, as it earths through its frame, or run a well secured wire from one of the 2 holes in its base to an earth point.

you ok with the plug leads ? I think on the 1.2 its 1-2-4-3, but cant remember exactly, Haynes will tell you if you have one.

the dizzy also looks way too advanced, id slacken that off and turn it anti clockwise about 20 degrees (towards the front of the car)

ill have a look at mine later, and tell you exactly which wire goes where :thumb:

Take a photo of your wiring when you get a minute mate, so I know exactly where these go.

[marc69]

send me a pm to remind me, mine is a 1,.3 byut it is the same wiring

[LEWI007]

Pm'd.

Anyone else got any input on this?

[marc69]

here is the coil, the red and the brown cable connects to the two at your dizzy. The black one is thelive feed when the ignition is switched on that comes rom the wirirng by the headlight. The green is for the rev counter.

http://i988.photobucket.com/albums/af5/69marc/Photo685_zps6cee3791.jpg


http://i988.photobucket.com/albums/af5/69marc/Photo686_zpsa33e4d4d.jpg



What wiring loom is it you have?
If you are stuck for others, post a pic and description and I'll see what I can do but, if the coil is wired up as above then you should at least get a spark to get started.

[LEWI007]

Right, ive wired the distributor up properly, fitted the new leads and plugs.

Still no spark, what could it be now?

[dgbnova#1]

Looking at ure spaghetti does it crank no spark I ashumed

were the body earth to engine is just below the coil is there a thick brown wire from the light loom connected to the body there this is the earth for that side of the loom it's about 5mm thick

[dgbnova#1]

Just looked at photos it it is but looks a bit manky give that a clean with sandpaper when u have took it off and a spot of grease when u put it back and check the others earths
are u getting ignition live on the black wire and perm live on the red

[LEWI007]

Just looked at photos it it is but looks a bit manky give that a clean with sandpaper when u have took it off and a spot of grease when u put it back and check the others earths
are u getting ignition live on the black wire and perm live on the red

I will check that earth wire over tomorow.

The black wire does give an ignition live, the red one coming from the distributor doesn't give anything at all.

[jimbob-mcgrew]

im not sure if youll notice any voltage thru that red wire until the engine starts to crank.

did you pin a sparkplug or 2 down on the engine block to check for a spark ?

check the gearbox earth strap at both ends, and the alternator tensioner arm earth on the inlet manifold too... if its not earthing it wont be able to complete the circuit for a spark. (you could always double check this with a test light, to see if your getting a good earth at the cylinder head/engine block/gearbox/inlet and exhaust manifold

also, with the timing marks aligned, check the rotor arms not pointing to 7 o clock (if it is... the dizzys 180 degrees out)

it should be pointed to 2 o clock (towards cylinder no.1) when the timing marks are aligned. so it can cycle the 1-2-4-3 spark order properly

[jimbob-mcgrew]

actually, once you've checked the earth's - i'd start by seeing if the king lead from the coil spits a spark out to the block, then you can kill 2 birds with one stone, and check the coil is doing something

[LEWI007]

I've had an auto electrician check this out today, we have a lot of problems with the car.


The headlights stay on and won't go off, the radiator fan won't go off, if you pull the indicator stalk for the full beam, the sidelights and dashboard instrument lights anbd number plate lights come on, something is wired really bad somewhere.

Is the earth on the alternator bracket important? As their isn't one on at all.

[dgbnova#1]

I've had an auto electrician check this out today, we have a lot of problems with the car.


The headlights stay on and won't go off, the radiator fan won't go off, if you pull the indicator stalk for the full beam, the sidelights and dashboard instrument lights anbd number plate lights come on, something is wired really bad somewhere.

Is the earth on the alternator bracket important? As their isn't one on at all.


yes yes it is without it the alternator is not earthed it's on rubber mounts I'm sure ure auto electric guy should have spoted that

have you had the loom removed on the inside of the car ?

Check the fan switch wires are not melted by the exhaust or so one putting wire in there to keep it going constant
it stiil sounds like an earth problem to me

[TeddyThom]

Sounds like your gearbox earthing strap isn't connected, I had a moment like this before I realised that I had forgotten to put it on haha. Have a browse at that one. If you need help on your alternator, I shall grab a couple of pictures for ya.

[Pulsar_stu]

I had the same problem with lights and indicators and it was the gearbox earth.

i have the plug you need spare if you want it for your coil?
http://i25.photobucket.com/albums/c97/pulsar_stu/AD4BB2DC-BE7C-4DF8-8215-3CADA29C0733_zps6rnlkk5x.jpg (http://s25.photobucket.com/user/pulsar_stu/media/AD4BB2DC-BE7C-4DF8-8215-3CADA29C0733_zps6rnlkk5x.jpg.html)
this is how mine is wired up from dizzy to coil.
http://i25.photobucket.com/albums/c97/pulsar_stu/E85FA7A8-0DF2-4FE6-A102-07E7468B829C_zpsbiiqth3k.jpg (http://s25.photobucket.com/user/pulsar_stu/media/E85FA7A8-0DF2-4FE6-A102-07E7468B829C_zpsbiiqth3k.jpg.html)

[LEWI007]

Sounds like your gearbox earthing strap isn't connected, I had a moment like this before I realised that I had forgotten to put it on haha. Have a browse at that one. If you need help on your alternator, I shall grab a couple of pictures for ya.


Couple of photos would be nice mate, my auto electrician has told me to get new earth leads for the gearbox and stuff so that's next on the list.

Pulsar_stu - yeah that would be ideal mate I'll PM you.

[LEWI007]

Also, the loom hasn't been removed from inside the car but it has been slightly tampered with for an alarm which we have now removed, and for the digi dash.

[TeddyThom]

Couple of photos would be nice mate, my auto electrician has told me to get new earth leads for the gearbox and stuff so that's next on the list.
Et voila!
Gearbox earth lead on the gearbox:
http://i789.photobucket.com/albums/yy173/teddythom/13BEFC1C-823F-4294-BC38-FFCA4DF0477D_zps54a2bo9e.jpg (http://s789.photobucket.com/user/teddythom/media/13BEFC1C-823F-4294-BC38-FFCA4DF0477D_zps54a2bo9e.jpg.html)
And the earthing point on the chassis leg: (look at where the brown earth wire is, that's from the loom if memory serves me correctly, the other lead is the strap from the gearbox.
http://i789.photobucket.com/albums/yy173/teddythom/5642C7CC-5FD3-47AC-A991-BF46C1E94823_zpsnfkhs6q8.jpg (http://s789.photobucket.com/user/teddythom/media/5642C7CC-5FD3-47AC-A991-BF46C1E94823_zpsnfkhs6q8.jpg.html)
http://i789.photobucket.com/albums/yy173/teddythom/9E345E10-C02A-4A93-990D-19E6B6C0DAB5_zpswz7focyz.jpg (http://s789.photobucket.com/user/teddythom/media/9E345E10-C02A-4A93-990D-19E6B6C0DAB5_zpswz7focyz.jpg.html)

[dgbnova#1]

Also, the loom hasn't been removed from inside the car but it has been slightly tampered with for an alarm which we have now removed, and for the digi dash.
Alarm tied into the ignition Possably ?
Try a jump lead from the - on the battery to the block if u get spark then it an earth problem make sure it's clean metal on the block

try a bit of wire to one black wire point on the coil to the + on the battery see if u not getting any live to it
do u know the coil is good ?

[LEWI007]

Any photos of the earth that is meant to go onto the alternator? I haven't got one.

[dgbnova#1]

4"aprox off brown 8mm wire 2x m8 wire eyelets crimped at both ends to said wire and fitted to ault bracket bolts at both ends so one to the inlet and one to the adjuster