onslow Posted August 16, 2007 Report Posted August 16, 2007 Hi just bought a cheap galaxy on a n reg just got a few problems with it and needed some advice 1.When u first start it up sounds like its misfiring but then ok,but u can only rev it up to about 5k wont go anymore,the bloke put new leads plugs on etc and tried second hand coil pack but still does it 2.looses water but cant see no water leaks Quote
mumof4 Posted August 16, 2007 Report Posted August 16, 2007 Hmmmm....if it has an egr valve thingy...that might need a clean.........mixture might be running lean..... as for the water....no idea...mind....im prob talking out my rear over the egr aswell....:rolleyes: Only going on when my veccy was misfireing. Quote
insider Posted August 16, 2007 Report Posted August 16, 2007 Could be a leaking head gasket - losing water into the combustion chambers. Could cause misfiring and lack of power. I hope not! Quote
Smilge Posted August 16, 2007 Report Posted August 16, 2007 Could be a leaking head gasket - losing water into the combustion chambers. Could cause misfiring and lack of power. I hope not! Tend to agree ........ check the dipstick for signs of the dreaded white sludge. Quote
erisaman Posted August 16, 2007 Report Posted August 16, 2007 You can also check inside oil-filler cap for signs of head gasket probs - the same white sludge. Quote
johnswlondon Posted August 16, 2007 Report Posted August 16, 2007 misfire and losing water sounds like the head gasket.the head will need skimming and a new head gasket,probably 350-400 pounds Quote
johnswlondon Posted August 16, 2007 Report Posted August 16, 2007 the misfire is caused by water entering the combustion chambers Quote
onslow Posted August 17, 2007 Author Report Posted August 17, 2007 no white sludge in the oil at all Quote
tim-spam Posted August 17, 2007 Report Posted August 17, 2007 ...which could simply mean that the leak is between the combustion chamber and the cooling system. You only get white sludge if water (or condensation) is getting into the oil. Quote
Bigjeeze Posted August 17, 2007 Report Posted August 17, 2007 You're probably all correct but Jesus do you have to go for the worst scenario straight away? Can't you at least hold out some hope for the poor guy? Let him down gently for chrissakes!!! Quote
AndyBee Posted August 17, 2007 Report Posted August 17, 2007 Sorry to keep on the head gasket failure theme, but the symptons do suggest this and it's something to try and rule out. Here's a few further checks : 1. Has the expansion bottle filled up (above the "Max" indicator) with water ? As others have said, the coolant water may be leaking into the combustion chambers - and in that case air is likely to also be leaking into the coolant. The coolant will then become pressurised, fill the expansion bottle and probably blow excess coolant out of the expansion bottle cap (check for signs of splashes/stains in the surrounding area).2. For the same reason, take the expansion cap off (very slowly and carefully and ONLY with a cold engine) - you may detect a smell of exhaust fumes or fuel. 3. It is likely that the engine will run hot as the water gradually gets replaced by air, to the point of overheating - ie water temp gauge pointing to the red section. The temp may be stable on tickover, but would climb quickly as the car is driven and the engine is put under load.4. Final check would be to watch the exhaust after starting - it is likely to contain a lot of moisture even in otherwise dry conditions and emit steam and water drips (this is where the coolant is going). Any or all of the above symptoms would suggest head gasket failure, I'm afraid. Not terminal, but a few hundrew pounds to fix (mainly for labour so a mechanic friend would be useful). If engine has been running like this for a while, the cylinder head could have been damaged and need skimming or replacing. I really hope it is something simpler, but can't avoid the obvious signs. Good luck ! Quote
onslow Posted August 20, 2007 Author Report Posted August 20, 2007 The cause of the misfire was down to the air flow metre not woirkin,and as for the water loss im thinking its because the fan does not come on,it doesnot loose loads of water just a bit Quote
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