First my question.... lately when pushing the height adjustment toggle to go to access height from normal ride height, it instead decides to go into extended but usually not fully (up arrow is flashing but still indicating normal ride height. I have to cycle it down again to normal and then again to access. This does not happen every time... has anyone had any experience/suggestions?

Next is my need for a recommendation.... thought it would be a good time to replace the spark plugs and wanted to know what plugs our picky trucks like? Thanx....

 

Could be the switch is going south but no experience there as of yet.

For plugs I have gone with NGK Iridium with good results in both of my LR3s

 

Thanx Army Rover on the plug suggestion....

a bit to add to the height adjustment issue. It appears as if it thinks it is encountering an obstacle when instructed to go into access height and so automatically raises to avoid obstacle. Could a bad height sensor cause this? Or any other ideas would be helpful. Unfortunately, I don;t have a GAP tool... thanx

 

Bad exhaust valve on compressor. Original Hitachi? If so it's common.

 

No it has the AMK... it does have a loud exhaust sound when dumping but that has been that way since I got the truck 3 years ago. I will keep it in mind though... thanx abran.