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Hiccupping 914/4

Fuel Injection & Carbs

Vehicle Information: Model (914/4, 914/6): 914/4; Year: 1974; Engine (type, size, modifications): 2.0 L ; Total Mileage: 85,000;

My 914 2.0 L seems to be having a problem, I can only describe it in one word as a hiccup... this only happens when running at a constant speed. the car runs fine but once in a while it seems like it just doesnt fire or misses out but this only takes a sec then it is running fine again. I have covered water in the gas, plug wires, condenser, rotor,ect.. (tune up) and have ran 3 tanks of fuel through it with injector cleaner. As I said it only does this 'hiccup' when running at a crusing speed, doesn't seem to matter what gear or what speed. It has not been doing it during accerleration or deceleration. I have had two different shops look at it(one with a Porsche factory trained mechanic) and no one seems to have an idea why. I might mention that there are times that it doesnt do it at all.. other times it does it every 4 or 5 min as I go somewhere.. All mechanics that have looked at the car have told me that it is one of the cleanest 914's they have seen in years and that from what they see there is NOTHING seriously wrong with the car and that it seems to have been VERY well maintained over the years. I have to agree, it is all orig paint and interior and looks like a car that is only a couple of years old not 30.. other than that the car runs like a top.. but this missing out is perplexing. I hope that I have given enough information on my question if not.. please ask..

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