Trying to change my glow plugs on a Benz 240D, 82. Hard to reach the first plug, no room, what should i do?

Answer 1

use a short 17mm combination end wrench to remove the set of fuel injection lines from pump and injectors lay aside and cover with lint free surgically clean cloth then cover pump ports with more of the same now cover injector ports with plastic "cap plugs" of approperiat size.
thinking back 82 may have used buss bars between plugs so take note of their arrangement before dissassembely then remove the glow plugs as required [if individual wires go to plugs use 8mm wrench to remove nut and then 12 mm wrench to remove plugs] note if plug is stuck work it back and forth as you unscrew them [ i have found benifit after plugs are removed . to run a 22 caliber rifle cleaning brush into the plug holes to remove accumulated carbon.
if i remember right glow plug torque is about 20 ft/lbs and injector lines are 18 ft/lbs,start lines at both ends but tighten at the pump only now operate starter for a couple of 30 second spins [fuel should be visable at the injector ends [this bleeds the lines] now tighten lines at the injectors
turn key and wait for glow light to go out and start engine [first start may be a little rough as any left over air must be expelled before the engine will catch] KEEP EVERYTHING CLEAN and you will be ok

Answer 2

Try disconnecting one motor mount at a time, this should allow the motor some movement either with a pry bar or a floor jack. But remember to put them back in and tighten them.