My buddy is looking to buy a 1990 200tqm that has been sitting for two years. everything looks good, but we've yet to hear it run. planning on going back with a battery for a start up.

the owner said "there is a bad fuel line that is causing idle problems" the fluids looked good and were spot on the level. does anyone have any tips before we go back, or anything he should know about this particular model?

thanks