I just performed a valve adjustment on my '85 300 TD and somehow may have damaged a vac line, as the ignition won't turn off the engine. I had this issue awhile back and believe I plugged a line someplace and got it to work, but now I'm lost :\.

Hoping that someone can provide some insight as to best steps to troubleshoot the issue and determine where the prob lies. BTW- I can pull vac on one of the lines and it shuts off, so I believe the cut-off switch is working OK.

Thanks in advance for the help. This is a daily driver and it's embarrassing to have to pop the hood to shut 'er off. I appreciate the knowledge on this board!