I think it had a weak spark cos it only started when warm then it died on me now no spark at all i have tried an other ecu but no joy any one have any idear .

 

Any codes? My first guess would be possible crank sensor. If no codes at all first thing you should do is check all fuses

 

does the tach move as you crank?

 

Hi im having problems with no spark on my x300 taken out cas was dirty and bit of rust on electrode cleaned still no go is there anything else that could cause this problem before I get replacement any suggestions please

 

Well, answer the question I asked, and you will get some suggestions.