Well I got some head work done and put it back on yesterday it runs a little rough, need to do a valve adjustment but now it is throwing a error code 4 which is CKP Sensor (Crankshaft Position Sensor) and I am just wondering if anyone has any idea why? I have everything brand new, I mean less then 500 miles on everything in and on the motor. Any help would be nice, and also where and how do I chek this, is it in the dizzy? if so where and how do I check this or change it? Any help would be appreciated. Thanks!!!!