Stumped...need fresh ideas!!!
car(mustang with 2300)misses when coming off corner,doesnt clean up til it come back to an idle...sometimes 1 lap til the miss starts,sometimes 4 laps,sometimes 10 laps...lately it has been 1-2 laps.
here is a long list of what has been changed to try and cure the issue:
radiator
fan
complete cylinder head x3
head gasket
bottom end x3
intake manifold
carburetor
new fuel line
fuel fittings on cell
new fuel cell
new electric fuel pump (Holley red and blue)
all new wiring,new cables
new switches and push button
unhook tach completely
unhooked all gauge lights
starter
solenoid
battery
alternator(new,and unhooked/unwired)
distributor
module
coil
plugs and plug wires
checked cam(2A) and ignition(36A) timing
now for the strange part....
when we pulled the carb off to change the head a couple months ago,under the carb in the intake it was black under the carb,like it has been really hot..so we changed intake as well(carbed not EFI)
took complete head off another engine(no issues with this head)and put it on our bottom end...been fighting same issues last several weeks..pulled carb off yesterday,intake is black again under carb.
anyone got any ideas???
the sound it makes when it "misses" is like it dropped a cylinder or 2...sometimes if the throttle is played with,it will go away for 1/2 a lap.