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Old 12-01-2007, 11:37 PM   #1
rwcook49
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Join Date: Dec 2007
Location: Elizabeth, Colorado
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1999 - Suburban - 454 Engine Knock

Hello,

Here is the scenario. I had the lower intake manifold gasket leaking so I replaced it, the upper, injectors (I have 160K miles, thought it was time). New cap and rotor.

When I put it all back together the engine started fine but has severe engine knock. Not in any one valve, but it seems to be all.

My assumption is I have the distributor in wrong, but I'm not sure how that could be.

I believe I put #1 in TDC and put the distributor back in per the instructions on alldatadiy. The only part I'm uncertain of if the timing marks on the front timing chain cover. There doesn't seem to be a scale but just a tab of sorts that sticks out. So I just lined up the harmonic balancer mark with this tab and listend for air coming from #1 cylinder.

What am I missing?

Thanks for the help.
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