Land Rover Repair: 1998 land rover 4.0SE, squeek, coil springs


Question
1. we converted to coil springs and we disarmed the EAS fault
now we are experiencing a sqeeking sound (like bed springs that squeek) Is there something that we can do to stop the squeaking or is this the shocks that need changing?

Is there anything else we needed to disconnect like the air compressor pump, ect.

I have 79,000 miles and the car has really been sitting up for approx 4 years until now. runs great so far.  
We put on a new water pump as well.

2. Most important..what spark plugs should I use when time to change.
Thanks for your help.

Answer
If the vehicle didn't squeak before your modification, and it squeaks now, logic tells us the work you did induced the squeak.  I'd look to the spring fitment for the answers.

As to plugs, use Champions.  They were the original fit.

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