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Crap! I think my engine is hydrolocked!


GnatGoSplat

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The poor 1988 Cutlass, it's been sitting in the back yard for 4yrs or so and has been completely neglected and not started in the last 3. I decided to try to get it up and running again, and set a charger on the battery overnight. Amazingly enough, the battery charged up and is able to crank the car. I crank the starter, it turned over 2-3 times then CHUNK! It was as if the engine stopped in its tracks. Now it won't crank a full turn, it sounds like it only moves a 1/4 turn or less. I only did that once or twice because at this point I'm thinking it's hydrolocked and I didn't want to damage things worse. I checked the coolant reservoir. Empty! I pulled the radiator cap. Empty! I checked the oil, looks okay, but overfull. So I grabbed a breaker bar and turned the engine by hand on the TGP for a baseline to judge amount of effort required. Then I tried to turn the engine in the 88. It barely moved, even with a little muscle put into it, then it gets tight. It also seems to spring back when I release it. Damn.

 

I would pull the plugs to verify, but it's way too hot under the scorching sun out there.

 

Anyway, I'm about 99% sure it's hydrolocked, but I've never experienced a hydrolocked engine before. Expert opinions?

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You gotta pull the plugs and see if it will turn over. Whatever crap might be in there should blow right out.

 

I'd also dump a little motor oil or some MMO in through the plug holes so the rings aren't bone dry when you turn it over.

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Well I can speak from experience after just hydrolocking my '92 Cutlass 3.1 in May. When it first happened, all I heard was "CHUNK" when turning the key. The starter couldn't turn the engine. Several hours later, once the pressure subsided thru the blown head gasket, I could manually crank the engine with a breaker bar and the car actually cranked and started, but spewed white smoke.

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Yeah, I suppose I can't be 100% sure without pulling the plugs, but what else could it be but coolant? I did run the fuel pump a couple months ago to make sure it was good, but I'd think that would take more fuel than could leak through a leaky injector and that was a good couple months ago.

 

This sucks. I guess now I have to decide whether to fix it or scrap it.

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I can haz it???:laugh:

 

Yeah, pull plugs and go from there. Sounds hydrolocked to me. Sucks to hear.

 

Sounds like the headgasket or intake gasket just rotted out rest of the way due to sitting.

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If someone plans to fix it and drive it, they can have it for whatever a junkyard would give me for it. I'd rather see the car go to someone who'd fix it up rather than see it get crushed.

 

Yeah, I didn't even know head gaskets could rot out just sitting, but I guess they can. I'm thinking it can't be the intake gasket, because its coolant passages are separated from intake passages. A pushrod passes between the intake passage and coolant passage so a leaky intake would mean coolant gets in the crankcase, but not the combustion chamber.

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Is the starter cranking or does it just click because I had that happen in my 93 cutlass and it was the starter that crapped out. I couldnt turn the motor by hand because the starter was stuck.

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Is the starter cranking or does it just click because I had that happen in my 93 cutlass and it was the starter that crapped out. I couldnt turn the motor by hand because the starter was stuck.

 

x 2

 

Happened on both my TGP and TSTE. Though I knew the starter was going on the TGP for quite some time, the TSTE took me by surprise one day. I picked up lunch at a restaurant, and when I came back to the car, it just cranked a couple times, then wouldn't turn over.

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I might be interested if you're willing to let it go for the scrap price. But then it won't be scrapped, so it'd be a win/win :sasun:

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I might be interested if you're willing to let it go for the scrap price. But then it won't be scrapped, so it'd be a win/win :sasun:

 

I would. I don't think it'd be THAT expensive to move, you can rent a Uhaul car trailer for about $45, though you'd also need a winch or something to pull it up onto the trailer, you can buy those from Harbor Freight.

I don't have the heart to part out the car myself, and judging by the prices first-gen W-body parts go for on eBay, it's not really worth parting.

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