GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: teeb on 27 February 2004, 19:14
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???
I have unhappy 16v 1991,
+ small yappy dog wifey, v. upset, lol.
It is in a garage in wilts, has recently had new head put on, was skimmed etc. The mechanic had trouble settling the water down in exp tank, he put a new thermostat on, which he said helped.
It is back in as it is using a lot of water, no obvious leaks, he says compression is fine on all, he thinks water pump is stuffed, but doesnt explain where water is going?? Top rad hose is at 88 deg lower stays at 40 always, he has tested rad with hose and water passes through, any ideas? I dont think he used new head bolts, he said his book said they werent required.. but if compression is okay then oh i dont know.
Muchos help required, thanks in advance.
teeb, stuck in london.....
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Should have had NEW GASKET NEW HEAD BOLTS.
HEAD STILL WARPED/CRACKED
BLOCK COULD BE CRACKED,
WATER PUMP COULD BE SH***D,
RAD COULD BE SHA**D,
HOSE/WATER PIPES COULD BE SHAG*D,
HEATER MATRIX COULD BE SHAGE*
CORE PLUGS COULD BE *HAGED
IF YOUR NOT SEEING SIGNS THEN YOU MAY HAVE HAD A MASSIVE AIR BLOCKAGE
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Sounds like the chaps that put the head on have bodged it, head bolts should always be changed as they are stretch bolts.
Get someone else to do the job.
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ta for replies, me thinks head bolts (lack of new ones could be a big problem, as for getting someone else to do it, well it is in their garage with various bits off, which is nice.
will know more from tuesday as that is when they can work on it again..
surely though compression would be down if the gasket was f..ked? He better not be lying as he is smaller than me. lol.
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could just be lying about the compressions test, ask to see the graph!
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you should also use a bigger head gasket after you skim the head as they seem to run really hot if you dont
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Why? ???
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captain bodge strikes again
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a few years back i had a head gasket go on a 1986 mk2 8 valve, my mate took the head off and said it needed skimming so he took it to his mate who works for brmotorsport he skimmed the head and sent it back. it got put back together and ran fine. didnt lose water or oil, but ran really hot. my mate phoned his mate at brmotorsport who said they had come across this problem a few times and it was something to do with the standard head gasket after the heads had been skimmed. i didnt ask any more questions as was selling the car anyway
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obviously when you machine the head you lose material, so i suppose you compensate by putting a thicker gasket on?
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mmm,
where would you get a thicker gasket? Do you get gasket paper and make it yourself?
Am back in wilts to console wife, and will pop in to see mechanic tomorrow and ask him why he didnt use new bolts. If he isnt frightened of me, then he should see my lovely wife angry...
hope it is water pump though, would be nice n easy.
He also queried the head that i gave him to put on, off ebay, 80k, but before the probs he said it looked fine, think i may rebuild the old one and plop it on myself.
aah well.
will update tues/wed with idiots findings......
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just back from garage, he did compression test in front of me, put 150 psi through each cylinder when at tdc, no air leakage.
took off thermostat, was new, does work, tested it in boiling water, hose from thermostat contained cold water, when we took off thermo hot water came out through pump, so looks like pump was buggered, poss due to old thermostat not opening more than .5mm.
he did hand crank of pump in water and there were no bubbles, so not pumping i guess. watch this space, really hope it is pump as missing having a car as wife has 8valve now. doh!
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well, have car back,
has new water pump, secondhand rad, with two speed fan, which he
has wired on slow speed constantly as without this after 30 mins it
boils, how weird is that?
car working though so musnt grumble.
any ideas about why it wants to boil so easily?
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Is the radiator the right size for the engine? Does the radiator and all the pipes warm up (i.e. blockage, clogged pipe?) Does the temp sensor that makes the fan kick in work? What does your temp guage say when the water starts boiling?
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hi again,
no access to comp during week, doh.
rad is bigger than last 1, i thought 8v size but he said it came off 16v.
Water now swirls in expansion tank so i guess travelling through well.
before he hard wired in slow fan speed, all pipes warm up as far as i know. temp guage reads just over half when it boils.
Temp sensor for fast fan speed works, not intermediate as i recall.
temp now only just gets over white even in traffic, great for africa, which is nice.
Thinking of handing it over to vw specialist, as i dont have much time (weekends) to get parts and the like.
Also have weird prob, which it had before new head fitted, when idling it stays around 900rpm but sounds like it is about to cut out for a fraction of a second, it does this constantly, when cold and not so cold. This is obviously a fuel prob? It has new coil, dizzy, timing is good, new leads, plugs etc.
Aah cars...
Still does 100 up the m3 nicely officer.....