Technical Awkward Panda Spark Plugs

[JAMLAX]

Yesterday, I made an initial attempt to check (and replace if necessary) the spark plugs on my recently acquired 2004 Fiat Panda 1.2.
I successfully removed only one HT lead from the plug on the right hand side (i.e. the plug nearest to the timing belt).
Next, I carefully unscrewed the spark plug and satisfied myself it was in good condition.
However, my efforts to remove the three remaining HT leads from the other spark plugs were unsuccessful.

Any helpful suggestions will be appreciated - rather than me resorting to full brute force and ignorance to release these stubbornly stuck HT leads?

 

[ZaphodB]

Twist as you squeeze and pull, and never pull on the cable itself, always the rubber boot.

... and don't discount the idea that you might need to source a new cable set in the end...

 

[JAMLAX]

Thanks, I'll persevere with twist, squeeze, and pull on the rubber. Yes, I'm hearing this advice over the phone from my brother (mechanic) and as you say to avoid hauling on the actual HT cable leads.
Well, I'll keep all this in mind for my next attempt at checking/replacing the spark plugs. Probably I'll wait for a month or two since the engine is presently running sweetly enough.
Thanks for the prompt answer ZaphodB ... One way or another the task doesn't sound so daunting now that I have a sound plan of attack - and if I end up having to replace the HT leads so be it but it will be very satisfying if I manage Plan A rather than having to resort to plan B.
Within a month or so I'll aim to update on the eventual outcome.

 

[ZaphodB]

It's also worth preparing for the sudden release, thus avoiding damaging the lead in the process.

 

[portland_bill]

The HT leads should be considered a service item. It is usually difficult to remove them without damage.
I keep a set ready, although last time not needed.
If needed, get the NGK set, as they have the different boots for different plugs.

 

[koalar]

Pull at a slight angle they are not straight

Spark plugs, simple, quick, easy | FIAT Panda (Mk3)

Unplug the lead Unscrew the plug Screw the new ones in Torque up Plug the leads back on and drive off That's how it should go and often does Most of the problems are avoidable Don't change the plugs while it's raining Don't leave the plugs in past 100,000 miles Don't over torque Don't under...

www.fiatforum.com

There are tools to make it easier, I don't use one, but garages normally do

Spark plugs, simple, quick, easy | FIAT Panda (Mk3)

Unplug the lead Unscrew the plug Screw the new ones in Torque up Plug the leads back on and drive off That's how it should go and often does Most of the problems are avoidable Don't change the plugs while it's raining Don't leave the plugs in past 100,000 miles Don't over torque Don't under...

www.fiatforum.com

Gaps the import bit, it grows by 0.1mm per 6K eventually leading to a misfire and eventually damaging the coil

They start at 0.8 or 1mm depending on brand and start to fail at about 1.6-1.8mm

I swap somewhere between 12-20K miles it's not worth in my opinion re-gapping as the coating is getting thinner, once they are seized in they can be a nightmare to get out

 

[JAMLAX]

Koalar - passing on this know-how from your years of Panda mileage is very much appreciated.
From you and so many similarly helpful Fiat Panda owners - I've gained many excellent tips that are already helping my DIY car maintenance efforts.
Thanks again!