I bought a Ultragauge the other day. After hooking it up to the truck, it found it and everything is okay. My question is when i look at timing, it is saying it is advanced 30 deg. On my way to work today it fluctuated between 18 deg and 31 deg. This seems excessive. Has anyone else measured this and knows what it should be? The distributor has been out two different times for various reasons and im thinking it got installed a tooth off or something. Would it even run if it was actually 30 deg advanced?

 

I could never get them to run a tooth off.The timing is controlled by the computer and you should get a trouble code if somthings wrong.The vehicle runs okay?

 

I installed my distributor 1 tooth off and it ran, but it ran like junk, misfiring and shuddering like crazy.