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Unread 07-14-2013, 02:42 AM   #1
kfxnando
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4.7 V8 got hot, gasket gone, How far do I go. new info with video

Dec 2012, we went away, drove to destination, no problem, drove around there no problem
on the way home no problem(total trip 1800km), 2km before home, traffic was blocked up, sat and idled, and saw temp go up, yep on a hot day and aircon working
temp went up to 3/4, my jeep does not have temp specific markings
and it normally runs just below 1/2

pulled off the road, switched off and checked every thing
started up, heard the fan come on, temp dropped to normal and been keeping an eye on it, however its not a DD

last weekend, was looking around, pulled of the radiator cap,(vehicle had been standing for over 24hrs) as I have had to top up the water bottle twice this year
and on the radiator cap(replaced Dec 2011) there was a little bit of like a brown source, smelled and did not like the smell of it, despite me having done new colling fluids Oct 2011

checked dipstick all looked good on there!!
checked oil filler cap, looked like moisture on there!! however its winter here, and the jeep stands outside
so pulled out that other little stick thing inside the oilfiller neck, and there it sits
Mayonnaise/Yogurt what every you wish to call it!!

that tells me head gasket!!
fell free to tell me if you dont agree!!



NOW!!
do I do just the top - gaskets and send the heads in, in other words, just a top reconditioning/overall

or

take the plunge and spend the extra money and do the whole motor, bearing, pistons/or maybe just rings

milage, unsure as the electronics were changed before I bought the vehicle, and the milage displayed is not a true indication

the motor did have a problem of valve stem seals or guides before
however all indications were that the bottom was pretty solid, no noises coming from the bottom either!!

had one or two noisy lifter in the mornings(for about 1min), after that all was smooth and quiet

so let hear all comments and advice

thanx

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Unread 07-14-2013, 10:06 PM   #2
shockracer
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What are your plans with it in the future? If you only plan to keep it for a year or so just do the heads. If you are planning to keep it for a longer time and keep it completely reliable do a full rebuild. Standing water doesn't do good on any metal.

Good luck with what you do!
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2001 WJ 60th anniversary edition 4.7 quadra-drive
5" hybrid lift, 265/70/17 Guard Dogs load E, bilsteins 5100's, addco sway bars, JKS front quick disco's, JKS adjustable track bar, KOR durometer track bar bushings, IRO crucial path front L.A.s, 1.25" Spidertrax spacers

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Unread 07-15-2013, 06:11 AM   #3
Double E
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checked dipstick all looked good on there!!
checked oil filler cap, looked like moisture on there!! however its winter here, and the jeep stands outside
so pulled out that other little stick thing inside the oilfiller neck, and there it sits
Mayonnaise/Yogurt what every you wish to call it!!

HOLD ON! You may not have a problem at all. The buildup of a creamy-brown substance in the oil fill neck is normal and not an issue. Especially if oil on the dipstick is OK.
Read: http://www.jeepforum.com/forum/f13/u...advice-223014/

The definitive answer would be a pressure check of the radiator & compression check. Do that first before calling it toast.
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2000 Laredo 4.7L Selec-Trac. 177K miles, Leather, 245 tires, tow package, crappy CD changer, full size spare, roof cross-rails & sunroof.
Changes & fixes: Rear Addco sway bar & greasble bushings, upgraded headlights, upgraded tail lights, new hood struts (replaced 2X), new rear hatchglass struts, new radiator (replaced 3X), new oil pressure sending unit (replaced 4X), 2 new speed sensors, 2 new door lock actuators, new ignition key cylinder, chrome front tow hooks, Mobil 1 Synthetic 5/30, Purolator Pure One oil filter, EBC slotted & dimpled rotors, EBC Greenstuff pads, new front shocks (replaced 3X), new rear shocks (replaced 2X), new IRO steering stabilizer, new timing chain cover, new water pump, thermostat, new thermostat housing, new high pressure power steering hose, Michelin-X radials, new sunroof assembly, new single-piece lug nuts, new exhaust manifold studs & gasket on driver's side, new Durango alternator. Jeepforum.com sticker, Visit cobaltboatsforum.com when you can!
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Unread 07-16-2013, 01:00 PM   #4
kfxnando
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Plan is to kept the jeep for a very long ti me

Doble ee, now that info puts a whole different spin on the situation

Thanx very very much for the info
Still reading the link that you send me

Very interesting

Nearly pulled theheads off for nothing

Thing is its the 1st time I noticed
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Unread 07-16-2013, 01:06 PM   #5
kfxnando
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So far from what i have read, did do a lot of short trips begining oftne year and thefiller neck has been off when I took the valve cover off to replace a lifter and put the rocker back into place, will need to check all tnat for leecks
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Unread 07-16-2013, 07:24 PM   #6
Double E
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Good. Glad to assist from across the pond. If the oil change you do (now) indicates good oil, keep truckin. Next time the temp goes up, kill the A/C & run the heat to determine that the radiator is the issue. If it does not change, there's a leak or the water pump is an issue.

My feeling is that it's the radiator but there's no immediate issue as long as the oil change (now? right?) shows no milky issue.
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2000 Laredo 4.7L Selec-Trac. 177K miles, Leather, 245 tires, tow package, crappy CD changer, full size spare, roof cross-rails & sunroof.
Changes & fixes: Rear Addco sway bar & greasble bushings, upgraded headlights, upgraded tail lights, new hood struts (replaced 2X), new rear hatchglass struts, new radiator (replaced 3X), new oil pressure sending unit (replaced 4X), 2 new speed sensors, 2 new door lock actuators, new ignition key cylinder, chrome front tow hooks, Mobil 1 Synthetic 5/30, Purolator Pure One oil filter, EBC slotted & dimpled rotors, EBC Greenstuff pads, new front shocks (replaced 3X), new rear shocks (replaced 2X), new IRO steering stabilizer, new timing chain cover, new water pump, thermostat, new thermostat housing, new high pressure power steering hose, Michelin-X radials, new sunroof assembly, new single-piece lug nuts, new exhaust manifold studs & gasket on driver's side, new Durango alternator. Jeepforum.com sticker, Visit cobaltboatsforum.com when you can!
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Unread 07-16-2013, 11:55 PM   #7
kfxnando
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On the heat issue, seriously considering changes changing the thermostats and new antifreez again


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Unread 07-17-2013, 06:35 AM   #8
Double E
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I would just to oil/filter first to confirm there's no mixing. No point in emptying antifreeze and replacing a thermostat if the bigger problem is elsewhere, right?

Also, the thermostat housing was not really designed to be taken apart repeatedly and the bolts that hold it on are known to snap off due to poor design and difficult access. If you have a bad thermostat, the temp will not return to normal no matter what you do.
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2000 Laredo 4.7L Selec-Trac. 177K miles, Leather, 245 tires, tow package, crappy CD changer, full size spare, roof cross-rails & sunroof.
Changes & fixes: Rear Addco sway bar & greasble bushings, upgraded headlights, upgraded tail lights, new hood struts (replaced 2X), new rear hatchglass struts, new radiator (replaced 3X), new oil pressure sending unit (replaced 4X), 2 new speed sensors, 2 new door lock actuators, new ignition key cylinder, chrome front tow hooks, Mobil 1 Synthetic 5/30, Purolator Pure One oil filter, EBC slotted & dimpled rotors, EBC Greenstuff pads, new front shocks (replaced 3X), new rear shocks (replaced 2X), new IRO steering stabilizer, new timing chain cover, new water pump, thermostat, new thermostat housing, new high pressure power steering hose, Michelin-X radials, new sunroof assembly, new single-piece lug nuts, new exhaust manifold studs & gasket on driver's side, new Durango alternator. Jeepforum.com sticker, Visit cobaltboatsforum.com when you can!
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Unread 07-18-2013, 09:39 AM   #9
kfxnando
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Thanx

Do plan on doing oil and filter
Was very lucky to meet someone localy that works in an oil lab
And for a small price he can analise the oil, and see if there is any antyfreez in the oil

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Unread 07-18-2013, 05:45 PM   #10
Turbozcs2003
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What year WJ

What kind of oil do you use, some have a lot of sodium as additive, so it looks like coolant leak.

Have you had to add coolant?

How old is your fan,assuming electric or do you have hydraulic.how old is the radiator.

Doing an oil sample will confirm if your loosing coolant into oil.
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Unread 10-14-2013, 07:44 AM   #11
kfxnando
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This story is not over

Sadly

Motlr is hydro-lockeding

Either its fuel from a leeking injector or water past thd gaskets
Oil staying clean

Meantime fuel pump packed up, so to move the jeep connected an external fuel pump, that belongs to another project to feed fuel to the fuelrail tl be able to build structure for carport
Jeep had been standing for 3 weeks, and when I tried to start it it sounded like hydrolocked
Turned it by hand/ratched and could hear the fluid leaking towards the front, once it was free, it cranked free
Sunday needed to move jeep again and again hydrolocked
Hence the video
However sparkplug looks clean
Oil is also still clean

Havent changed oil yet!! Jeep has been standing while I build

Here is the video
Though I would of seen something coming out, however nothing, and the sparkplug, looks clean no rust

https://www.youtube.com/watch?v=cKnJhlLCdCg

Sadly, from where I stand, think at least on head is comming off

Advice and comments welcome
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Unread 10-15-2013, 07:20 AM   #12
kfxnando
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Sure there are lots with advice who were faced wih similar situatons
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