: Jeep Hydrolock Hydro Lock ???s


My1stNiceJeep
08-07-2008, 12:46 AM
I did do a quick search but answers do not apply.
Stock 95 YJ 2.5 4CYL AX5 Did I mention stock.I tried passing a friend on the left[bad mistake] I launched off a 6' hill into 8' feet of water 4th low range.Jeep was done.I didnt shut it off but it stopped on its own.Jeep was off, got winched out, tried catching in 5th 2wd and the wheels locked solid.I assume that its hydrolocked.Besides pulling/replacing plugs wires cap oil etc, Is there anything I can do to get it running other than the obvious?4am just outta the shower any help is appreciated.Jeep is 20 miles away and cant swim.Thanks

Little Jeep
08-07-2008, 03:40 AM
Hydrolock is water in the cylinders. Water does not compress, so if you tried to start the Jeep BEFORE you removed spark plugs and pumped out the water, you basically made your pistons attempt to compress water. :eek: As I said, water does not compress so something has to give. Unfortunately, your internal engine parts is what will give. :eek:

Urban Wheeler
08-07-2008, 06:13 AM
You can bend or break rods hydro locking a motor. I have had success in just pulling the plugs and cranking the motor over to get the water out, but make sure you are away from the motor unless you want a face full of water. (I know) Install new plugs and give it a shot, it may take a while to start.

My1stNiceJeep
08-07-2008, 06:41 AM
Yeah it was a dumb move on my part.As I said it was very late,I had a few too many and did somethin dumb.Im just gonna throw it on a tow dolly and bring it home.Thanks

JeepNatzi#2
08-07-2008, 07:44 AM
I have seen several 4.0 this season take a dunk and trash the motor. You know what needs to be done to get the water out.

Now cross your fingers and hope that you did not trash the internals when you tried to restart and than tried to pop start it.

jpfrk2001
08-07-2008, 08:59 AM
sounds like an oppertunity for a upgrade

My1stNiceJeep
08-07-2008, 09:37 AM
Well it has 208k on it but if a swap is needed it will be for another 4banger.Thanks for the help and quick responses

Little Jeep
08-07-2008, 12:23 PM
Well it has 208k on it but if a swap is needed it will be for another 4banger.Thanks for the help and quick responses


Good luck. Our fingers are crossed that you didn't kill your motor.

My1stNiceJeep
08-07-2008, 12:51 PM
Well I will know in about 20 minutes.Let it drain for about an hour,pulled the plugs and replaced them.Got the water out but my starter is bad so Ill try pushin it.Ill let you guys know the outcome.I only paid 500$ for it so even if I need to replace the motor it will still be worth it.I might have gotton a picture of it and if so I will post it.Again thanks for the help

Little Jeep
08-07-2008, 01:11 PM
--snip--

I might have gotton a picture of it and if so I will post it.Again thanks for the help

Photos are REQUIRED or it didn't happen.

JR650
08-07-2008, 01:25 PM
I filled up my 4.0 winter before last drifting on a swamp being a douche bag and went through the ice sideways at about 20 miles an hour, good times, almost had to go wipe my ass after that one. Turns out a 4.0 holds about 6.5 gallons of swamp water. if u get it going again, make sure you change the oil a few times in the first couple hundred miles, get all that water out of the motor or the bearings will be fawked soon. Pull the dizzy and dump it out too, then wd40 the shit outta it, let dry. Good luck, jeep motors dont seem to know when to die.

Mud Marine
08-07-2008, 01:50 PM
one word that might f*** your night.... computer, I bet you'll need a new one and they arent always cheap. an alternative would be a carb motor

The Rockslut
08-07-2008, 02:18 PM
one word that might f*** your night.... computer, I bet you'll need a new one and they arent always cheap. an alternative would be a carb motor

I bet you don't know what you are talking about. Jeep computers are sealed.

My1stNiceJeep
08-07-2008, 02:37 PM
And obviously he doesnt.The Jeep just started up fairly easy.Little bit of smoke and water out the exhaust and it cleared right up.Only bad part is the slave went out on my clutch after pushing it about 3 times.Like I said it has 208k miles and I think almost all the parts are original.A friends girl was takin pics all nite and hes the one that pulled me out so I hope she tooks some pics of it.If not I will be pissed cause she was takin pics of everything eles last nite.Again Thanks for the help and Ill see about pics.Even if I dont get the pics I know it happened as my shoes are still wet