MPS Options

[Bullet]

I can seem to get my 914 to not run Rich. I have checked Injector spray paterns, replaced cap,rotor, points, condensor,plugs, plug wires. and belive that my vacuum routing is correct. I question the integrety of the MPS. if i remove the vacuum hose that runs to it and clamp it off i get no change at all in performance. I was told by a co-worker that i should drill out the riviots and check to see if it is gummed up. I just removed it and am getting ready to take it apart, when out of curiousity I ohm checked the teminals and this is what i got : pin 8 - pin 10 350 ohms, pin 7 - pin 15 90 ohms. is this normal? does anyone know of any way to check the MPS. Or could any one do a quick ohm check on theese terminals to let me know if that is a correct reading? any help would be greatly apreciated.

[lmcchesney]

You are getting there Bullet. Just a little more.
Injectors have an electromagnet which opens the valves. Check the resistance on the injector. It should be 2-5ohms. Not 0 and less than 25 is listed as normal. If the resistance is acceptable, clean the injector. The injector is triggered by 3V and not 12V like the cold start valve. The intake portion of the injector has a filter screen. This sometimes obstructs with dibre. Recomendations include spraying them with Chremtrol, or carberator cleaner. On the board is a method of making a home ultrasonic-like injector cleaner using a vibrating scribe. Otherwise, a local mechanic would probably place the injector in a true ultrasonic cleaner and do it quickly/reasonably priced.
If this does not work, many have mixed findings on rebuild injectors. Similar to the MPS comments. Bus boys: has 023-906-031 new for $90 and rebuilt for $41.5 plus core exchange. HPH Brad mentioned a site for rebuild injectors for $55 as well.
Now that you have a working MPS you may also want to check the flow of the injectors as Mike said. They should flow 380ml/min.
Good Luck
L. McC