Hello,
Suddenly my 1981 C3 has developed a rough running engine when it gets warm.
It happened as I set off one morning, all fine for first mile, then slowed down to go around roundabout and when I accelerated away the engine seemed to be running on only about four cylinders instead of eight.
It ran better at higher revs but same problem after slowed down to near standstill and accelerating away.
Initial thought was fuel problem, having occured on roundabout, or ignition coil?
I have changed the fuel filter in the Rochester quadrajet carb inlet, changed ignition coil and ignition terminal block/condenser/module in distributor, but no change.
I have removed all spark plugs and they are a good colour.
I have carried out a resistance check on ignition leads, six were around 11K ohms, two were around 6K.
I have just changed the two leads which had lower readings, but still no improvement.
I am not sure what to look at next?
Has anyone else had similar problems? or can suggest what to try next?
Suddenly my 1981 C3 has developed a rough running engine when it gets warm.
It happened as I set off one morning, all fine for first mile, then slowed down to go around roundabout and when I accelerated away the engine seemed to be running on only about four cylinders instead of eight.
It ran better at higher revs but same problem after slowed down to near standstill and accelerating away.
Initial thought was fuel problem, having occured on roundabout, or ignition coil?
I have changed the fuel filter in the Rochester quadrajet carb inlet, changed ignition coil and ignition terminal block/condenser/module in distributor, but no change.
I have removed all spark plugs and they are a good colour.
I have carried out a resistance check on ignition leads, six were around 11K ohms, two were around 6K.
I have just changed the two leads which had lower readings, but still no improvement.
I am not sure what to look at next?
Has anyone else had similar problems? or can suggest what to try next?