Tach needle fluttering, possible crank sensor?
Since I changed the timing chain and sprockets on our 1990 LE, the engine has been running fairly decent, still have extended cranking time to get it to start, 5-6 seconds and the tach needle flutters randomly. I can feel seat of the pants lags in the power flow of the engine too, however I cannot catch it acting up at idle. Cam magnet is new, recent repairs have also included a new IAC motor and different EGR valve. Air filter, plugs and wires are all about a few months old.
Is the crank sensor responsible for sending the signals to the tach and is there a proper adjustment procedure for the spacing between the sensor and the discs? In the past, I usually just eyeballed the clearances to make sure it wasnt contacting the sensor.
Thanks so much!