Re: 5.7 OMC Cobra Cracked Block
I have a 1989 Donzi in OK shape took it out this summer only to find that someone put sugar in gas tank. Cyphened out old gas put in new ran for like 10 minutes, then stalled out and wouldn't start. Looked in the engine compartment-FULL of water. Upon further inspection realized the block is cracked on both sides where the water jets are....anyone have any ideas what happened and what the heck should I do now?
I guess these are really unrelated questions.
1. How do you know that you have sugar in the tank?
2. What do you think sugar does to your engine anyway?
Now, since you didn't drain the water from your engine block, it really doesn't matter.... (Sorry)
You will either need to obtain a long block engine from just about any marine engine rebuilder or any automotive machine shop experienced in building marine engines.
You could also get yourself a used engine from a wrecking yard (out of a pickup truck) and install the brass core plugs yourself. Transfer your intake manifold/carb over to the "new" engine. I would not use your old manifolds unless you can positively determine that they weren't cracked also.
Oh, if you think someone put something granular in your fuel tank, sugar, sand, salt, or other substance that doesn't dissolve in gasoline, you'll also need to remove your tank and flush it, the fuel lines to the filter, and replace the filter. (you do have a filter?) All that stuff would not have gotten thru your filter to the carb, so you probably don't have to fool with your fuel pump or carb.
Good luck!
Rick
