please help 91 civic 1500 dual point efi
compression is 155 across
checked all sensors that i can with a meter
nothing showing on ecu
injectors ok , idles great and revs up to about half throtle no problem then just blue smoke and engine shakes and will not rev anymore. fuel pressure 52 lbs take vacum line off regulator engine revs a little more .Timing is ok
bad coil ? ecu? I just can't find ****
can ecu be bench tested?
unbolted the exhaust no difference
new plugs just carbons them up black
motor sounds perfect at idle no pings knocks just pers
put a used fuel regulator on and same thing
cam and crank marks ok
dist??
Help thanks

 

usually when there is blue smoke coming out of the exhaust, the head gasket is leaking or blown. you may want to remove the head and replace the head gasket. that could be your problem.