Technical > Ignition

So Found the problem whats the soloution

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Agriv8:
using my mates decent sealy gun ( can be added to the list of those that work )

Running the car on the Dizzie get the TDC spot on ( with No advance - will update that post that shortly ) Trigger toothe needs to be tooth 8 after the gap.

Then suddenly notice bu66er gone back to fireing on 3 coil packs ( So after just about managing to keep my composure thinking that  I have blown ign driver connected to pin 36 Again )

Anyway as a last ditch atempt thought hang on it was working fine on Monday ( firing all 4 ) so retraced my steps

Setting Trigger tooth to anthing less than or = 7 ok all 4 work - 8 and above we loose sparks.  >:( >:( >:(. so what causing that then. ???????????

Off back to see if it is always the top one of the Ign sequence list ( suspect it is ).

So suspect that I hadnt really blown the ign driver in the first place !!!!

REagrds and Confused

Agriv8

[email protected]:
What is your TDC after trigger value?

Agriv8:
Hi rob 80,

Jus confirmed it doent matter where 36 is in the ign order it wont fire.

it must be somthing to do with it being the last in the list

ie pickie



regards

Agriv8

Agriv8:
Trying to think of a solution to this.

Could rotate my trigger a tooth or 2  at the moment it is centered using the crank pulley and held in place with the 3 bolts that hold the belt pulley. ( so can only rotate 120 or  240 deg ) to redrill the trigger would mean removing the crank pulley.

Unfortunately its not an easy task taking the crank pulley of in my car ( radiator and oil cooler off ) and a pair of inboard shocks then need to loosen the engine mounts to get the pulley off.

But suppose if it my only option.

Regards

Agriv8
 

dnb:
Sounds like you're running in to having a problem with trying to do a spark event over the time when the ECU is resetting for the next cycle.

You don't talk of the "TDC before the trigger" parameter (measured in degrees).  You should use this to set the timing, not moving the actual trigger tooth around.

Set your trigger tooth to say 5, then move the "TDC before the trigger" to get the timing correct.  On a v8, you should aim to get "TDC before the trigger" to be around 60 degrees +/- 10 degrees (this is in case of a misfire & kickback while starting)

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