Hi again from Munich gentlemen!
First off, thanks to all who chimed in recently on the alternative heating ideas.
Here’s a glitch in the Matrix story. I was driving my D-Jet 1973, rebuilt 1.7 to 2 liter...which has been running essentially perfectly, and I thought to myself, „this thing needs nothing, and it should stay that way for quite a while. What could go wrong?“ Well, that algorithm of the virtual reality we‘re living in picked up on those thoughts and WHAM! 10 minutes later my car was all of a sudden running like crap!
The weather was the same as yesterday, when everything was fine on my nice Sunday drive in beautiful Upper Bavaria. The gas is the same. NOTHING has changed! The symptom is a slight hesitation and loss of power, seemingly only below 3000 RPM. It’s NOT causing a „bucking“ and it feels like a slight but very noticeable „sputtering“. If I were to acoustically imitate what it FEELS like I would kinda make a sound like a cat purring. It does also SOUND differently, but it would be difficult to notice for anyone other than a 914 guy. When I accelerate into the higher rpm range, like above 3500, it seeems to run normally / i.e. the symptom goes away.
The engine has 11,000 km / 6,700 miles on it. The distributor is electronic, so no points or rotor. The TPS plate is new. My grounds are all solid and volt meter is stable. My fuel tank is refurbished and filter is new. I haven’t pulled the plugs to look at them yet for signs of non -combustion, which I’m thinking is kind of a first thing to do. Haven’t had time yet. I drove home this afternoon after this started, swapped cars and went to baseball practice.
Question one: At what intervals should the valves be adjusted?
Could it have something to do with a „sticking“ valve?
I’m also thinking an injector may be malfunctioning. Thoughts?
Other possible culprits?
Thanks for sharing your thoughts and experience. Looking forward to reading what y’all think.
M.i.M.