|
Re: vacumm advance question
In most cases the so called "Pinging", otherwise known as spark knock happens under load or acceleration. If you have a metallic noise at idle, that would be another thing. I would try driving with the window down and listen as you accelerate your truck to get out onto a street or highway. If you here something that sounds like a light rod knock, then you are experiencing the "pinging" we have referenced to.
|