i have fuel, i have spark, cranks and thuds

[josephg15]

ok so i check my spark with a spark tester and i checked my injectors by pulling out the rail and visually seeing fuel while i had someone else crank the motor. the car cranks normal for a few seconds and then the motor makes a thud sound...its pretty loud. should i reset my cas. what is that thud sound im hearing? any info is good. thanks

[CoupedUp]

Sounds like your timing is pretty off and the motor is firing on the upstroke. I experienced that on my KA. HAHA.

[josephg15]

what are you saying, like its 180 degrees off, whats was wrong with yours???

[IanS]

try checking the electrical timing.

[josephg15]

whats the electrical timing?