94 E320 Misfire/hesitation after air pump removal.

[OdsGeorge]

Hello everyone.

Figured I will register after countless hours of searching and reading old threads, I have not seemed to find the solution to my problem. I have a 1994 e320 wag. My air pump started making terrible noises and bearing on it almost seized.

So I figured I will do some reading and bypass it and use a shorter belt. Which I did. I put a vacuum cap on the line that goes from the vacuum block on the front of the head, and I took off a valve and capped of a big air/rubber line that went from the pump to the metal line to the head eventually. After I was done and started the car, i noticed hesitation and misfire in my idle and you can hear the misfire by the exhaust flow and engine sound. The misfire is even more n
noticeable in Drive or Reverse then in Park or Neutral.

My first guess is a vacuum leak and I went searching for it, did I plug all the lines that needed to be after the air pump bypass or am I missing something? I have checked all the other vacuum lines and everything seems to be fine. Within last year MAF, Plugs, Filters, were all replaced on the car and it ran with no issues taking it has 220k on it. Where else should I look or what can be the culprit of the problem? Any information or diag process tips would be appreciated.