Hello,

My trusty 264(yes, for real) has developed a kind of hiccup. It will randomly jerk and stop. Sometimes the damn thing even burns rubber, which is quite embarrassing in a quiet residential neighborhood. This happens during acceleration, but also while attempting to drive at a constant speed.

So far I have:
-changed the fuel filter
-cleaned the fuse connections and put in new fuses
-changed the air filter

All of this has been to no avail. Does anyone have any ideas? Water in the gas tank? Ignition system issues? Anything else?

TIA

My first thought is that you are experiencing sporadic fuel pressure variations. Maybe the main pump dying, or something erratic in the circuit that powers the pump.

In the K-jet system, such jumpy fuel pressure might translate into variations in the control pressure that acts to stabilize the airflow sensing plate, making it act like you were pumping the "gas" pedal.

In any case, a check of both System and Control fuel pressures is usually the recommended place to start on a possible K-jet FI problem. This is usually not a DIY thing, as a special pressure gauge setup is needed.
--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

If it were my B21 242GT, I'd have at the in-tank pump (again). That is what comes to my mind, but I do not know anything about the 264s.