Had a big search around this site but cant find anything. Car is running like **** so had a bit of a poke around and found there is no spark on the leading coil. It has constant power supply and the trailing is firing just fine? I did try another coil when i was trying to remedy without investigating. but it did nothing! any ideas????? however i didnt try the other coils together(tryed the leading and secondary sepratly), will this change anything???

any ideas??

 

What do you mean the leading and the secondary?

 

i meant leading and trailing. i just finished answering some questions on hear about injectors and wrote that on accident.

 

Anyone know how to test ignitors????