Slartibartfast Posted January 27, 2017 Share Posted January 27, 2017 I wonder if your timing is actually way advanced vs what the light says, but the only thing I can think of that would do this is if you installed the balancer without the key and it shifted a little as you tightened down the crank bolt. I'm guessing you didn't have parts left over, though. My first check would be the vacuum lines, just on the off chance something didn't go on properly. A lean mix can cause pinging, though I would be surprised if it was enough to make it ping at low idle--when I had an intake manifold gasket leak it just sputtered and shook at idle, though to be fair I didn't run it like that long enough to warm it up. (You did bleed the cooling system, right? Not that it's likely overheating in Canada this time of year.) If you start it again, and back off the timing when it starts to make the noise, does the noise go away? If it doesn't make the noise again the next time you start it, or doesn't stop when you turn down the timing, look for other causes. None of what you did behind the timing cover should cause this unless you left a tool in there or something. I recently tracked down a minor knocking noise on mine to the air conditioner compressor. Turns out it cycles when the defroster is on (with the silly auto hvac head, anyway) and the truck only made the noise when the compressor was engaged. Again, hopefully it's something simple. Link to comment Share on other sites More sharing options...
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