No Spark At Plug
Posted 25 January 2013 - 01:56 PM
Tried changing crank sensor and coil pack to date still same problem. Resting plug on engine produces no spark when cranked over.
Could this be an alarm/imo problem? tried disconnecting battery and using spare key. At the moment cant get it to garage recovery will not come out unless its a mile from home.
Posted 26 January 2013 - 10:19 AM
I would start with the battery, is it the original ? It may just be that the voltage drops significantly enough when cranking that there is not enough Low Tension to the coil pack to produce a spark.
Motocraft batteries fitted around that age were Low Maintenance ones, Opaque white in colour with accessible cell caps, if so removing the battery you will see min/max marking for for the electrolyte level.
Posted 26 January 2013 - 10:39 AM
I have just checked and lock symbol stops flashing when key is turned. I will swap battery from my other car and try but I am not confident that is the problem.
Posted 26 January 2013 - 11:45 AM
Posted 26 January 2013 - 11:50 AM
Posted 26 January 2013 - 11:56 AM
Posted 26 January 2013 - 12:01 PM
ok tried another battery with same results. I put a spark plug into a lead and cranked to test spark is that test ok these days?
Yes, but the rocker cover may be made of some sort of plastic material/ an insulator
Did it just suddenly stop working for no aparrent reason (not after work done on the car?)
try gapping the plugs down - a narrower gap than recommended but not closed (the spark always finds the easiest route- like lightning -)
was it new coil packs or secondhand? how long ago/ mileage scince they were done/ same with HT leads (do these come with the coil packs?)
its possible it needs coil packs again (or something already replaced needs done again)
Posted 26 January 2013 - 12:49 PM
ok now discovered no voltage to coil pack (relay problem?)
Posted 26 January 2013 - 01:35 PM
I have a schematic pinout diagram from the ECU, if anyone else has it perhaps they can assist you.
It'll be late Sunday or Monday before I can get to them.
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