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Old 01-01-2007, 09:32 PM   #1
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water in engine

was goin through a mud hole today and the front left corner of the jeep went under, and yup, water got sucked in.... we drained the oil, flushed some clean oil through, then filled with new oil, pulled the plugs blew everything we could outta the cylinders, changed plugs. we can get it started if we pop the clutch, but it is running HORRIBLE. almost no power. i'm pretty sure we basically sandblasted the cylinders, so i'm thinkin it's time for a rebuild. BUT, does any1 have any ideas what to do to fix it without a tear down. also, how much is a new or refurbished 6cyl? thanks in advance for the help

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Old 01-01-2007, 09:36 PM   #2
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What got sucked in??

Was it muddy water with lots of nasty stuff or just water??

What year Jeep? Fuel Injection or Carb??


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Old 01-01-2007, 09:43 PM   #3
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muddy water with lots of nastiness....... 91 yj, TBI i believe, i know i aint carb
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Old 01-01-2007, 10:24 PM   #4
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What do you mean by "running horrible"
is it smoking?
popping back through the intake?
did you take off the distributer cap and dry it out good? shoot a little WD40 in there, it'll disperse any water.
is your air cleaner clogged?
Unless it's puffing blue smoke or knocking a rod you probably don't need a rebuild.
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Old 01-02-2007, 12:36 AM   #5
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What do you mean by "running horrible"
is it smoking?
popping back through the intake?
did you take off the distributer cap and dry it out good? shoot a little WD40 in there, it'll disperse any water.
is your air cleaner clogged?
Unless it's puffing blue smoke or knocking a rod you probably don't need a rebuild.
Agree with Skeeter. Take a closer look first. I hadn't wrenched on a motor in years until I bought my YJ. I immediately changed the oil, filters, spark plugs and wires with the same results. Went back through and found a swapped plug wire!
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Old 01-02-2007, 07:15 PM   #6
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whitey made the right call, me and dad were lookin at it today and in all the frustration me and my buddies ahd hooked up the spark plug wires wrong. but when the wires were wrong, i could get it to start, but it would backfire in the intake. what causes this? just out of curiosity
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Old 01-02-2007, 07:53 PM   #7
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The cylinder is firing when the intake valve is still open, you can get the same effect from water in the distributor or bad valves.
Most of the danger from flooding a running engine is from a hard hydrolock, you might bend a rod.
For the most part, your air and fuel filters will keep dirt out of the engine.
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Old 01-02-2007, 08:12 PM   #8
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yea, the hydro-lock was what i was worried bout mostly, but as soon as we pulled the plugs and turned it over i was 90% sure that wasnt an issue
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Old 01-02-2007, 08:36 PM   #9
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Keep an ear to how it is running. I have had a hydro-lock, it ran great for a week and then a rod broke. Did you run it at all before you did the oil change and try to clear the cylinders? If you did not, you should be safe. Also, if it starts running rough condensation can build in connections and cause that. You might want to take a hair dryer to your sensors and replace cap and rotor if you have not yet.
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Old 01-02-2007, 09:13 PM   #10
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naw, we didnt run it until we did the oil change and blew out the cylinders. i think i'm gonna rebuild it durin spring break this year, just for the heck of it. it's been gettin ALOT of blow by and it aint got as much power as it should.
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Old 01-02-2007, 10:25 PM   #11
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whitey made the right call, me and dad were lookin at it today and in all the frustration me and my buddies ahd hooked up the spark plug wires wrong. but when the wires were wrong, i could get it to start, but it would backfire in the intake. what causes this? just out of curiosity
That's the beauty of this forum! Eventully even us old duffs are right about something!
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Old 01-29-2007, 10:00 PM   #12
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naw, we didnt run it until we did the oil change and blew out the cylinders. i think i'm gonna rebuild it durin spring break this year, just for the heck of it. it's been gettin ALOT of blow by and it aint got as much power as it should.
In that case i'm guessing you've mest up a piston ring or two from the innertia when it sucked in water (lower compression explains the power loss). Good news is those arent expensive, bad news is you still have to open up the bottom and the top of the engine to replace them
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Old 01-29-2007, 10:44 PM   #13
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the blow bye and power loss was from b4 the water ingestion. this jeep sat up for a while and i think thats why. but i may have worsened it with the water. like i said i wanna rebiuld it soon. should i wait until it completely goes out or will that cause more damage? i'm thinkin rebuild and prevent further engine problems
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Old 01-30-2007, 08:22 AM   #14
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If you wait till it blows on it's own you may be waiting forever. these are surprisingly tuff little engines but yes, if it blows on it's own you could well cause considerably more damage.
Rebuild whenever you feel like spending some money, it won't hurt anything.
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Old 01-30-2007, 09:07 AM   #15
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time is more my issue than money. by the time i actually have some spare time to do it. i'll have saved up plenty. fulltime student and employee is ridiculous
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Old 01-30-2007, 06:01 PM   #16
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fulltime student and employee is ridiculous
Tell me about it. I go to school (high school) full time and then work after wards part time and i think i'm busy i dont even want to think what it would be if i work full time.
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Old 01-30-2007, 08:19 PM   #17
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same here. i work part time and go to school.

i do have decent time for the jeep though........
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Old 01-30-2007, 08:24 PM   #18
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School and work pretty close to everyday for me too.... I got early release from school (high school), i get out at 11:50 everyday, The work till atleast 7pm everyother night..... besides that, Its down to working on the jeep or riding bikes....
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Old 01-30-2007, 10:53 PM   #19
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I get off from school at 2:20. it suks so much since you hear same junk over and over for 50 minutes every hour every day. I can probably go to school for half that time and still learn everything i learn now. Half the time i'm zoning out since its all stoneage stuff that i've heard since the first day of high school.
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Old 01-31-2007, 07:42 AM   #20
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"But it does me no injury for my neighbour to say there are twenty gods, or no god. It neither picks my pocket nor breaks my leg." - Thomas Jefferson, Notes on the State of Virginia, 1782

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Old 01-31-2007, 08:05 AM   #21
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I get off from school at 2:20. it suks so much since you hear same junk over and over for 50 minutes every hour every day. I can probably go to school for half that time and still learn everything i learn now. Half the time i'm zoning out since its all stoneage stuff that i've heard since the first day of high school.
its great bein homeschooled.

first year of homeschool and i love it. so much more freedom
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Old 01-31-2007, 11:14 AM   #22
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I see you learned good grammer in your home schooling.

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