you change the tank sieve, try and flush then blow out the fuel line and have someone watch (or lay newspapers under the the line) and see if anything comes out. The PO of mine had to have this done and his indy listed it on the receipt.

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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!