A Question About The Spark

[erbs 42 1 Cars]

on my 205 i was with miles (goodwood) today and we tested to see what kind of spark there is

 

on tickover we looked at the spark and seemed very weak, so we tried another coil and ignition amp and still the same

 

the tickover was erratic today, hunting really bad and then be some what ok tickover, i got a set of new leads ages ago, cheapies i think they were

 

could the cheap leads be holding back the spark, the cars ok when driving,just seemed a weak spark, i'm used to seeing a bright blue spark on engines rather than a pail weak one

 

[jackherer 543]

It could be the leads or the dizzy cap and/or arm but also check the engine earth wire and the battery terminals.

[toolie72 67 1 Cars]

When I had bad spark plugs and leads the car was hopeless under load as I suppose would be obvious-so obvious I discounted it a nd blamed everything else!! Doh

Agree with above comment-if your earth has high resistance you will get a weaker spark-it's just a circuit after all