I had a strange incident last night driving my 81 300 SD Turbo Diesel.
While running at about 40 mph downhill on a bridge, the car started to
slow down. I floored the accelerator pedal and the car didn't respond.
I pulled over and the engine began to run rough, as if it is choking
and ready to cutout by itself, but it did not. I turned off the
ignition and waited about 30 seconds and started the engine again. It
started immediately but idled rough for about 20 seconds and after
stepping on the accelrator while on idle a few times, the engine
started to run normal. I was able to drive the car home for about 8
miles as if nothing happened. This morning, the car started normal and
was able to drive it again, but after about 5 miles, the same thing
happened. The engine was not responding even though I floored the
accelerator pedal. I again pulled over while the engine was running
rough and turned off the ignition. After 30 seconds, I started the
engine and it idled rough for about 20 seconds and after stepping on
the accelerator a few times, the car seems to be normal. Is this fuel
related, i.e., clogged fuel filters or something serious that I need to
take to a mechanic? Are there any additives I can add to the fuel tank
such as "dry gas" as I thought maybe there is moisture in the fuel
tank/lines. I noticed the in-line fuel filter to be dark brown in color
instead of almost clear platic when new. Does this indicate that the
fuel system is dirty and clogged. I live is South Jersey and I don't
think the temperature has dropped that much yet to affect the fuel
system. Sorry for the long post and thanks in advance for any help.