Main Menu

914 Running Rich, Part II

Fuel Injection & Carbs

Vehicle Information: Model (914/4, 914/6): 914/4; Year: 1973; Engine (type, size, modifications): 2.0L 4; Total Mileage: ?;

Thanks for your ideas. I checked the pressure sensor - it wasn't perfect, but good enough that it probably isn't the problem - I put it under a 14psi vacuum, and it leaked down at the rate of about 8 seconds/psi (a spare 1.7L sensor I have held 14psi for several minutes - but I don't think they are interchangable).I pulled the cold start valve and all the injectors. After running the fuel pump for a good minute, none of them were leaking. However, when I first turned on the key, the injectors would fire. While I figured it was normal for one to fire, two were doing it. So, I put the car in gear (4th) and pushed it (with the ignition on). Doing so resulted in the injectors firing in pairs. My understanding is that they should fire one at a time. If they were firing twice as often, that would cause the flooding I am experiencing... Am I correct that they should fire one at a time? If so I think that it must be something bad (a transistor?) in the control unit. A bad distibutor switch would cause the same one to fire again and again, and a short in the wiring may cause two to fire together, but not both pairs.If this is the problem, is the solution to buy a rebuilt control unit, or is there something else I should think about before I spend they $$?

You must log in to view answers associated with technical questions. Join PCA to participate in our community.
No votes yet