What the heck was that noise?

[Drago]

I just de fueled my 3500 of BioD and refilled with DinoD, bled the air out of the fuel manager and cranked, I clattered like a SOB and then smoothed out, SES light now on but everything running normal. Would a little air working its way out cause the racket? Also is the IP timing controlled somewhat by the PCM or is it purely mechanical?

 

[Drago]

found it http://www.thetruckstop.us/forum/showthread.php?11754-FYI-TDCO-Timing-the-DS4-Injection-Pump

 

[tanman_2006]

Optical eye possibly fogged?

I know my 95 was real sensitive to wmo but would still run w/ ses on

Source Unknown

 

[Drago]

THAT would explain a lot. didn't someone on this forum ask about or came up with a way to bypass the optical sensor?

 

[Drago]

found it http://www.thetruckstop.us/forum/showthread.php?33574-Optic-Sensor-Fooler&highlight=optical+sensor