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[amba]

After the fiasco this week with a miss fire and me thinking I had cured the problem I found today that when applied heavy throttle and got engine reving beyond 4k slight hesitation and roughness had returned.

Thought I had traced the problem to moisture around the boot of # 6 plug lead after fitting new plugs.When I removed # 6 plug lead found that the insulator at the bottom of the extended plug connecter had become detatched as it looked like Magnecor had sealed them with some heat resistant  red silicone compound which has pulled away.I had cleaned this all up but am now starting to think that maybe this lead is not sealing correctly around foot of spark plug so at some point I will be contacting Magnecor to get another lead made up.

Question I have is to be sure this is the problem ,can I fit another make # 6 lead with the 5 other Magnecor leads and run for a while to ensure this is the root problem or will having a different lead of possibly a different thickness cause a different issue.

If so I will be looking for anybody who has a spare # 6 plug lead for me to try .

[RobG]

After the fiasco this week with a miss fire and me thinking I had cured the problem I found today that when applied heavy throttle and got engine reving beyond 4k slight hesitation and roughness had returned.

Thought I had traced the problem to moisture around the boot of # 6 plug lead after fitting new plugs.When I removed # 6 plug lead found that the insulator at the bottom of the extended plug connecter had become detatched as it looked like Magnecor had sealed them with some heat resistant  red silicone compound which has pulled away.I had cleaned this all up but am now starting to think that maybe this lead is not sealing correctly around foot of spark plug so at some point I will be contacting Magnecor to get another lead made up.

Question I have is to be sure this is the problem ,can I fit another make # 6 lead with the 5 other Magnecor leads and run for a while to ensure this is the root problem or will having a different lead of possibly a different thickness cause a different issue.
If so I will be looking for anybody who has a spare # 6 plug lead for me to try .

Can`t see it being a problem

[dbug]

Worth it to confirm diagnosis mate 

[amba]

That was my thoughts so now on the look out for a decent # 6 plug lead 

[dbug]

Just buy a cheapo correct length from a motor factor to confirm - if it cures you can replace with a decent one later

[Bionic]

It might be me being overcautious but I always replace the full set of anything that starts to give problems engine wise. At least that way I can rest assured that if I simply fit a new single bit the partner/s to it will not then break down and give the same problem in a different place.
At the end of the day they have all done the same amount of work..........
Use a cheapo to find the fault and then change the set.....I would.

[Bionic]

After the fiasco this week with a miss fire and me thinking I had cured the problem I found today that when applied heavy throttle and got engine reving beyond 4k slight hesitation and roughness had returned.

Thought I had traced the problem to moisture around the boot of # 6 plug lead after fitting new plugs.When I removed # 6 plug lead found that the insulator at the bottom of the extended plug connecter had become detatched as it looked like Magnecor had sealed them with some heat resistant  red silicone compound which has pulled away.I had cleaned this all up but am now starting to think that maybe this lead is not sealing correctly around foot of spark plug so at some point I will be contacting Magnecor to get another lead made up.

Question I have is to be sure this is the problem ,can I fit another make # 6 lead with the 5 other Magnecor leads and run for a while to ensure this is the root problem or will having a different lead of possibly a different thickness cause a different issue.

If so I will be looking for anybody who has a spare # 6 plug lead for me to try .

[amba]

Fair comment,Bionic.

I have just checked back on my records and found that the current set of plug leads have covered 103,245 miles and are 3.5 years old.

Whilst they are Magnacor 8mm I am thinking they might be getting to the end of their life and a new set is in order.

What would be the expected life  of a set of leads,as I  see Magnacor give them a 10 year warranty but no mileage mention.They have never been swimming in oil but # 6 has had a few water baths.