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ht leads are wrong

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Old Sep 5, 2010 | 02:57 PM
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Default ht leads are wrong

guys ive just fitted a new dizzy cap and leads but i think there wrong

its a saph cosworth 4x4, on the top of the cap it has numbers for the leads ive done this but it has a bad misfire i.e leads being wrong..

as you look at it from top numbers are like this

43 12 coil in middile

starting from top left what are the numbers please

top left

top right

bottom left

bottom right

it may be somethig else thats wrong the car hasnt been used since dec 08


also where can i get the fan loom from i was going to make my own but dont know where to get the relay connector from
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Old Sep 5, 2010 | 04:09 PM
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anyone ????????
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Old Sep 5, 2010 | 07:44 PM
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Relay connectors can be got from people like www.vehiclewiringproducts.co.uk
To do the HT leads simply put engine at TDC as marked on crank pulley, with cam pointers pointing inwards, ie exhaust at 3 o'clock and inlet at 9 o'clock, then note where the rotor arm points to that's number 1, 3 is next, then 4 then 2, as firing order is 1/3/4/2, 99.9% sure the dizzy rotates clockwise but check.
tabetha
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Old Sep 6, 2010 | 12:11 AM
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Originally Posted by tabetha
Relay connectors can be got from people like www.vehiclewiringproducts.co.uk
To do the HT leads simply put engine at TDC as marked on crank pulley, with cam pointers pointing inwards, ie exhaust at 3 o'clock and inlet at 9 o'clock, then note where the rotor arm points to that's number 1, 3 is next, then 4 then 2, as firing order is 1/3/4/2, 99.9% sure the dizzy rotates clockwise but check.
tabetha
thanks for that mate something isnt right still, it still has a misfire
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Old Sep 6, 2010 | 10:07 AM
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Determine which cylinder is missing first by pulling leads off with engine running, if you don't like shocks use something insulated to do this, if you have any heart condition let someone else take the shocks.
Then you can test lead, plug, cap etc to narrow down.
tabetha
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Old Sep 7, 2010 | 09:31 AM
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Originally Posted by tabetha
Determine which cylinder is missing first by pulling leads off with engine running, if you don't like shocks use something insulated to do this, if you have any heart condition let someone else take the shocks.
Then you can test lead, plug, cap etc to narrow down.
tabetha
mine at the this at the min done all of the above its off on no 4 but its getting spark and fuel ? any help ?
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Old Sep 7, 2010 | 06:27 PM
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Originally Posted by saph-mad
mine at the this at the min done all of the above its off on no 4 but its getting spark and fuel ? any help ?
Just for peace of mind do a compression test, it could still be a lead or plug, when outside the engine they need a lot less power to make them spark, compared to in the engine under compression, this has the effect of trying to kill the spark, why some lose the spark only under boost, ie increased compression(adiabatic) ratio.
You can always do swapsies with the lead or plug into another known good cylinder to see the effect of the swap.
tabetha

Last edited by tabetha; Sep 7, 2010 at 06:28 PM.
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Old Sep 9, 2010 | 12:02 AM
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still got the same problem i need to make sure the leads are correct before i pull any leads off
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Old Sep 9, 2010 | 01:16 PM
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Easiest way is to label the leads.

Martin
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