both timing & compression are normal. it just stop run while being driven then will not start it truns over I check the spark the fuel and air it getting all three I wonder if it has something to do with their the theft protection or a switch relay clutch start swich???? I have worked on cars a long time this has me stumped. maybe a fuse.
I get a code 21 it has to the coil resistor condenser or bad harness r connections