Quote:
Originally Posted by Orv
...A lot depends on how deep it was flooded and how long it sat. I'd probably pull the valve covers and look for rust. If there's rust on the valve train it's toast. If not, change the oil and trans fluid and do a compression check. If that's good, you could try starting it, see if the FI and ignition systems function and if the engine knocks. You might get lucky...
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Knowing more about the flood it was in (fresh or salt water) and how long it sat will help guide you. Saltwater being extremely corrosive. I'd also look for clues that she was a running before the flood, so knowing the history would really help, if not, be a detective.
I agree on pulling a valve cover, I'd also drain the engine oil, the heavier than oil water will come out first; put a bucket under it pull the drain plug, put the plug back in just as the clear fluid becomes black. if it's got more than a few quarts of water, it may be a goner.
If you do try to fire it up, change the filters first, including emptying and dropping the fuel tank to clean the inlet sock, drop the transmission oil pan and get the water out of it before circulating it through the fuel system and transmission. A lot of guys will locate the ECM and remove the plug the check for corrosion and the terminals, probably above the passenger's feet, against the firewall.
good luck