I agree with the injection timing.
The chains are designed to break in. That's why you have different specs on chain stretch for new and old chains.

If the you or the PO retimed the pump with the old chain it will more than likely be out of time with the new chain.

Did you check for a woodruff key when you put the new chain in?

Did you replace the guides too?

But then again I had some of the same problems you described when my tank vent clogged. Does your fuel cap suck when you take it off?

Danny

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1984 300SD Turbo Diesel 150,000 miles

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