Technical ht leads arching coil issues

[brianW1979]

hi my 2004 1.2 8 valve is running rough misfire somewhere can see arching ht lead at coil pack end no two cylinder ht lead have on changed with old one had sitting about now arching has moved to other coil pack and that lead now arching does anyone know what the issue is

thanks

brian

 

[Ziggy122]

hi my 2004 1.2 8 valve is running rough misfire somewhere can see arching ht lead at coil pack end no two cylinder ht lead have on changed with old one had sitting about now arching has moved to other coil pack and that lead now arching does anyone know what the issue is

thanks

brian

i cant quiet make heads or tails of what your saying
i think what your saying is
you have an arching at cyl2 coil pack to HT lead
You've changed it for the old one and its now moved to the other coil pack?

To start with
the HT's should all be replaced with new, i dont recommend using 1 Ht new and others left as old

When its arcin out, it means its found an easily route to earth instead of via the spark plug

IF the spark plug has gone open circuit (failed plug) then it'll find another route

Have the spark plugs been changed recently/ever?

Ziggy

 

[brianW1979]

spark plugs changed about a week ago you are correct has moved from one lead on one coil pack to another lead on another coil pack making the engine misfire was is the gap best suited for punto engines


thanks

brian

 

[Ziggy122]

spark plugs changed about a week ago you are correct has moved from one lead on one coil pack to another lead on another coil pack making the engine misfire was is the gap best suited for punto engines


thanks

brian

Since your an 8v
Autodata suggests0.9mm for NGK plugs

So the fault we are looking at is the New HT's are causing the sparks to jump to earth
When old ones are fitted they are okay again

So i'd be looking at returning them and getting another set

Eurocarparts - have the longer set for cyl 2 and 3 @ £11 delivered free
But you'll have to wait for them
Unless you click and collect from them at a local store

Ziggy

 

[brianW1979]

many thanks ziggy i got new ht leads working a treat now

thanks

brian

 

[Ziggy122]

many thanks ziggy i got new ht leads working a treat now

thanks

brian

A set of bad leads.... how much did you pay and where from?

I had a set of bad leads from my local autofactors i used, only 1 cyl had a short tho

Ziggy

 

[brianW1979]

bought my original leads from europarts for 8 pounds about a year ago bought my new ones the better quailty ones from europarts for 11 pounds works a treat now best it has run since i bought it car was also lpg converted about a year ago shows quality matters

thanks

brian

 

[Ziggy122]

LPG needs a super good spark IIRC, to ensure a good burn of the gas
If not you risk filled the exhaust system up :devil: when that ignites it might sound like you've shot yourself

Not only that punto's love and a must have good ignition system to prevent coil packs burning out and or spiking the ecu

Ziggy