Hi All, just joined so excuse any protocol errors.
My faithful old G Wagon is playing up and i hope someone can give me a bit of guidance!

It was stuttering a bit at 3000 revs and cut out while driving. after a short time it started again and i limped home, so i decided to do a fuel and air filter change, which seemed straight forward.
now it wont start and ive noticed the stop lever on the injector is down and not in its normal position. its a 3000 GD 1992 with 145000 miles on the clock.
any pointers would be appreciated.