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SIMON64

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Posts posted by SIMON64

    3.9 v8 cracked head

    in Range Rover Forum

    Posted

    Your 6mpg may very well be unrelated to this problem, I would try and sort your water loss out first then work on the fuel problem.I reckon if it was the expansion tank then some dye would be noticable, My cap wasn't venting properly either so this caused a build up in pressure probably causing the failure of the expansion tank. Airlock, how to know? Hmmm tricky one. All i can say on this one is what my mate done for mine. The rad plug on the top left hand side of the radiator (as your standing at the front of the car looking into the engine bay) was removed, then with the engine started, he kept topping up the level tight to the top, reved it up to and just kept topping up until it stopped spurting water out and sat at just below the very top, then plug went back on, took it for a run to build up some pressure and took the expansion cap off and let it rev, looked like it settled down alot and during every rev you could see the water was circulating ok.

    When was the last time you had your timing checked?

    hi i have never had timing checked i have look at water level and have a go at what u surgest i cant take car 4 run at mo cuz it is out of tax and on a sorn regards simon

    3.9 v8 cracked head

    in Range Rover Forum

    Posted

    Hi Simon, your problem sounds a bit similar to the one i had a few months ago matey, I think you always assume the worst and think it'll cost you mega bucks. I was losing about 2-3 litres everytime i went out a run no matter how long or short the run was. It was a mixture of things. Expansion tank on it's way out,expansion CAP was shot and needed replacing, thermostat needed replacing as it wasn't opening up at the desired temp, timing was out by a good 10 degrees which caused it to run warmer then normal, and i think there was an airlock in the system too which was taken care of by undoing the rad plug at the top whilst the engine was running and poured water into it, carefull though as it spurted everywhere and nearly scalded my mate who was brave enough to keep pouring water in to make sure it kept filling up.After all that and after only spending about £15, Fitted everything myself and my mate done the timing with his light gun, it's....................well i'm not going to tempt fate but i haven't posted on here for a while :)

    Hope it's somit simple;)

    hi dc i will take a look at expantion tank but if leek was from there would it have shown up with the uv dye how can i check if it has an air lock and would any of the things metioned on the topic be causeing the 6mpg thing or is that a seperate thing altogether

    cheers dc regards simon

    3.9 v8 cracked head

    in Range Rover Forum

    Posted

    Heads don't crack on V8s they warp, and gaskets won;t ehn keep it all in

    Yours sounds either more like and internal leak (covered above) or external leak. you can get some leak visible dye to add to the coolant, this shows up far quick and clearer if external, worth a go 1st :)

    Nige

    hi have had this done with some kind of UV dye by local garrage they said they still could not find the leek thats why they did the preasure test on the heads but that came back good and are stumped as to what to do next

    3.9 v8 cracked head

    in Range Rover Forum

    Posted

    I have just noticed yours is LPG ..................... check for coolant leaks around the vaporizer .............

    Also have a good look around the underside of the water pump .........................

    Often a small leak will evaporate before its obvious ................ you can sometimes tell from the discoloration that the coolant leaves when dry.

    hi ok will check that the water pump is fine i have just had a new one fitted just in case it was that

    cheers bud

    3.9 v8 cracked head

    in Range Rover Forum

    Posted

    If the head gasket and liners are all fine then i would check all of the 'core plugs' especially any that might be fitted at the back (bulkhead) end of the block/heads for leakage. Also the inlet manifold might have a leak.

    will do thanks for help

    3.9 v8 cracked head

    in Range Rover Forum

    Posted

    In general a garage would not see fixing a liner as economic .............. they will fit a replacement engine.

    If the liner to block seal is porous then you either need top hat liners fitted (£800 - £1200 for the liners alone) or a replacement engine (£500 for a good runner or £1200 - £2000 for a short engine ................... on top of that you will have the garage labour to remove / refit and maybe build up the engine......for a completely fitted replacement full engine, then you wont get much change from £5000

    To rebuild your engine yourself is going to cost about £1500.

    so having had the head presure tested and is ok what is the likely hood that this is the problem and how can i tell find out for sertan that it is that, is there anything else that it could be or have i got a scappy on my hands

    :(

    3.9 v8 cracked head

    in Range Rover Forum

    Posted

    Go for a longish run and get the engine hot (10 miles or so) ..................... then pull in and switch off for a few minutes (no more than 5 minutes) ........ when you restart the engine keep an eye on the exhaust and see if you get a large puff of grey smoke (burnt off coolant which is also leaning the mixture).

    Also, on return from the run, remove the plugs whilst the engine is hot and see if any of them look cleaner then the rest (almost like its been steam cleaned) ?

    It could also be a blown head gasket...................... a compression check will easily diagnose this ................... if the compressions seem OK on a cold engine then you will undoubtedly have a liner problem.

    K seal works sometimes, but only in a very small % of cases.

    hi had compresion test done and that came back as good so cant be head gasket is a liner thing a big problem i know less that zero about cars so will need it to be fixed at a garage or some thing is this going to cost me mega money to sort out (what is a liner?)

    3.9 v8 cracked head

    in Range Rover Forum

    Posted

    try a compression test first, that would show up a potential head gasket problem, if you can get hold of some uv leak detector fluid bung that in the coolant and see if there are any leaks.

    does it use a lot of coolant?

    hi sorry just edited my reply to say had done both of them and all was ok lol only loses coolant when running about 2 ltres a week

    3.9 v8 cracked head

    in Range Rover Forum

    Posted

    A cracked head on the RV8 is very unlikely, but the symptoms will depend upon where the crack is …………….. in fact, to generalize, the symptoms will be the same as cracked block / porous liner / slipped liner syndrome (a much more common problem)..............

    Loss of coolant, pressurised hoses, and may be over heating.

    hi do have loss of coolant my hoses do stiffen up but i would not say they were rock hard far from it it never over heats and runs fine other than my mpg has dropped to about 6mpg (dont know if mpg is related or a seperate problem ) i did put some K-seal in to try and stop leek but it still leeks had head presure tested they said it was fine so cant be head gaskit prob also had water pump replaced but cant find sorse of leek even tried using a dye in the coolant but still sign where water going

    regards simon

    Class of people?!?

    in Range Rover Forum

    Posted

    Jesus David Sparkes! :blink: Supposed to be a joke! Bit of fun between all the technical stuff. Truth is i'd love a P38, and an L322, infact a few of each, and a bunch of Classics. Thing is I just love Range Rovers, they're vehicle perfection in my view.

    I started the topic because my very good mate Gav (see above post) has just purchased a really nice P38 and I thought I'd start a "what's the best Range Rover" thread for a laugh to celebrate. And it worked, he couldn't resist!

    So that's all it was David Sparkes, a bit of fun. But if i'm not allowed a bit of humour on here then I wont bother. I'll just stick to technical questions. In fact not even that. Don't want to come across as "screaming for assistance". Miserable git.

    Cheers

    p.s. Also David Sparkes, some of us are on a learning curve here and do ask questions about what you may consider to be 'simple' problems. Some of us haven't been working on cars for long. We're not all born with an encyclopedic knowledge of motor vehicles. Or would you prefer no questions? Would you prefer that the people who know, know, and the people who don't, don't. Door closed.

    WELL SAID V8DAVID I AM WITH YOU ALL THE WAY

    k-seal

    in Range Rover Forum

    Posted

    With the engine COLD………………….. remove the expansion cap and smell the coolant …………… does it smell of exhaust gases ?

    :)

    Ian

    NO THERE IS NO SMELL OFF EXHAUST GAS REGARDS SIMON

    k-seal

    in Range Rover Forum

    Posted

    Depends on what the problem is I guess. <_<

    My 3.9 was pressurising the cooling system, I compression checked it to confirm head gaskits were ok and then k-sealed it. This lasted 40k miles before it started pressurising again. So I did another compression test and 2 cylinders were slightly low but k-sealed it again because I had a cronic missfire as well as the geyser out of the expansion bottle. K-seal worked for 5 minutes before it packed up and started missfiring again. :angry:

    I removed the heads had them skimmed and crack tested, reassembled with composite gaskits and it still pressurised the cooling system and was misfiring like a person I'm not that keen on. While I was working out what my next move would be it pressurised so much that it popped the plastic plug off the top of the Rad, unfortunately I was on the M40 at the time. I was so used to the low cooling system warning light flashing away at me that I continued for a mile before the temp gauge started rising. I pulled over but the engine was cooked. :o

    If you have a pressurised cooling system It has got to be worth giving it a go but don't expect it to be a lifetime fix.

    The best thing to do is to fix the cause of the problem, if a head gaskit has blown should be a fairly easy fix, if a liner has slipped, block cracked then you have my sympathy :(

    I am not sure what problem is i have a water leek somewhere it only loses water when i am driving it took it 2 a garage who had it for 2 weeks

    they could not find the leak they put some kinda dye in water ans sent me home 2 return in weeks time plan was they would find the leek through the dye but still can not find it so they said it must be going inturnally so they did a head test and said no heads where fine so put some leek stop in and sent me home again but hay still got bloody leek some one else had look and said water pump was buggered so have just had that done yesterday and some one said try k-seal i had not heard of it so thought i would find out. regards simon

    PROPLEM WITH FUEL CONSUMPTION

    in Range Rover Forum

    Posted

    Simon - how many miles has your truck done, and what major work (if any) do you know of that's been done on the engine? For example, head gaskets, cam, full rebuild...

    hi its done 140,000 miles dont now what it has done to engine i have not had anything done but not had it long. my millage should not be a problem being so big or will it i dont have a clue i drive um thats about the total of my knowlage of cars

    regards simon

    PROPLEM WITH FUEL CONSUMPTION

    in Range Rover Forum

    Posted

    Why :rolleyes: ................. because there are a lot of Classic RR 3.9's that have had engine swaps to 3.5 flapper due to block & cam problems with the 3.9 engine.

    :)

    Ian

    is this something i should be aware off block & cam problems with the 3.9 engine. what are these problems and is there anything i should be doing to prevent them

    regards simon

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