Question about 2008 Aprilia RS 125

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Water coming from exhaust smoke coming out of radiator cap

Big pressure build up in cooling system

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Water coming from your exhaust is very bad. Best case scenario is a blown headgasket that can be replaced and then go on. Other possibilities are cracked or warped head or cracked block. All will require at least removal of the head to repair.

Did you really mean exhaust smoke, or simply bike is overheating and blowing steam out the radiator cap? If simply overheating the first thing to check is your thermostat. Remove it and test in a pan of boiling water. Does it open? If not, replace it.

Posted on Jun 24, 2009

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Posted on Jan 02, 2017

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2 Answers

Got water on number 4 cyn could this be head gasket


Must likely, Check the radiator with the cap off ( make sure you removed the cap when the engine is cool) and see if you see bubbles coming up to the cap when the engine is running. Also check for white smoke at the exhaust pipe when the engine is running. This is a sign that water is leaking into the cylinder. Best way to check is use a radiator compression gauge where you pump a low pressure in the radiator and see if it holds the low pressure, if not you do have a leak and the coolant system and the system is not sealed.

Oct 22, 2017 | Cars & Trucks

2 Answers

After driving long distance when i stop my car push water out off the radiator and coolant continer


Blown head gasket may cause this to occur as exhaust pressure goes into cooling system and builds up pressure over time

Nov 01, 2016 | Cars & Trucks

2 Answers

I have changed my thermostat and water pump on my 2000 impala but it still runs hot and water wants to blow out the top of radiator instead of circulating why


Coolant blowing out of the top of radiator , is this with the radiator cap on or off ? Do the cooling fans come on ? A coolant temperature switch activates the fan motors. This switch regulates voltage to the cooling fan relay. This switch operates the fan whenever the engine coolant temperature exceeds 110?°C (230?°F). For location and diagnosis, refer to Electrical Diagnosis. A transducer can also activate the circuit, depending on the A/C compressor head pressure going to the condenser.
The engine cooling fan relays provide the high current required for the cooling fan motors using a low current signal coming from the Powertrain Control Module (PCM). This signal is a function of various inputs.
Refer to Electrical Diagnosis for further information and diagnosis of the cooling fan relay.
The crossflow radiator uses a pressure-vent filler cap to allow a buildup of 103 kPa (15 psi) in the cooling system. The cap allows the system to operate at a higher than atmospheric pressure. This pressure raises the boiling point of the coolant to about 129?°C (265?°F) at sea level, which increases the cooling efficiency of the radiator.
If you are unfamiliar with these thing's , I suggest you take your vehicle to a qualified repair shop .
Ifd you don't

May 15, 2016 | Cars & Trucks

2 Answers

2002 Pontiac GTP supercharged trouble code po300 keeps coming up and I have pressure building up in the radiator is it a blown head gasket


Probably.
Code 300 is for a random miss, and yes the extra pressure could be from a leaking head gasket.
You may be able to pull the spark plugs and find coolant residue on one or more of them. A shop could check for exhaust gas in the radiator too.

Apr 02, 2016 | Pontiac Cars & Trucks

1 Answer

Is there a bleed vaule to remove any air pockets in the cooling system?


you need to perform a cooling system pressure test on the cooling system and test the radiator cap, taurus's had problem the coolant tanks splitting, and defective caps, also have a co2 test performed to determine if you have a headgasket leaking exhaust gasses into cooling system 23yr ford tech..

Mar 29, 2013 | 1999 Ford Taurus

1 Answer

How to tell if i have a blown head gasket


If the cooling system is loosing coolant and there are no leaks onto the ground, or if the cooling system is building up too much pressure, the problem could be a blown or leaking head gasket.
A mechanic would use an exhaust gas analyzer to "sniff" the radiator for exhaust gas. The radiator can also be capped and checked for pressure coming from the engine.

Jul 17, 2012 | 2001 Chevrolet Impala

1 Answer

I just put a brand new radiator and radiator cap in my car and its still over heating and now its misfiring what could be causing this?


Did you bleed the cooling system? and check operation of the thermostat, which should have been done after fitting radiator before finishing by putting on radiator cap.
If not remove radiator cap when cold get vehicle warm and check thermostat operation, while bleeding any air pockets in cooling system and if no flow and bubbles or it starts to boil (shooting water) out of radiator the thermostat could be jammed or head gasket blown.
Sounds like it could be a blown head gasket. Get it hot again and miss firing, remove and inspect all spark plugs you may find a very clean spark plug indicating water entry into that cylinder or even water/coolant droplets in spark plug. You can also hold paper over spark plug holes and give the engine a quick crank over to see if any water comes out of cylinder while cooling system is still under pressure, or use radiator pressure tester to pressurize cooling system, wait 5-10 minutes and then crank over checking for water/coolant in cylinders. Another tool to check for blown head gaskets that cause overheating is a TK Head check, which sniffs the cooling system for evidence of exhaust fumes in cooling system.

Jul 21, 2011 | 1992 Toyota Celica

1 Answer

Radiator boiling into recovery and boiing out


Does the vehicle overheat on the road? If it does and pushes big burps of coolant into the reserve tank then you could have a head gasket leak. Usually what happens with a head gasket leak is that the engine will often start and run normally but will soon start to push coolant out in a kind of foamy burp as the combustion gasses that accumulate in the engine block force their way out. You can have a small head gasket leak that allows combustion gasses to escape into the cooling system without getting coolant back into the engine and often the first symptoms of this kind of a leak is a motor that suddenly overheats, the heater quits blowing hot air and after a short while everything returns to normal for a day or so. As the leak worsens however it may keep pushing coolant out of the reserve tank with a cool or cold engine as the pressure builds to quickly for the reserve tank to handle it fully. Having said that if you have a perfectly good cooling system that is hot and take off the radiator cap it will spray blistering coolant coolant all over so never remove the cap from a warm or hot cooling system! Most additives won't stop a head gasket leak as there is just too much pressure for them to "stick" in the leak and they just get forced out of source of the leak. It's rare but you could have a water pump that's not circulating enough coolant around but usually you have different symptoms than this.

Jun 01, 2010 | 2000 Jeep Grand Cherokee

1 Answer

White smoke coming out of exhaust, engine not overheating loss of power does not appear to be losing water


White smoke from the exhaust is a sign of coolant entering the combustion chamber. You say no coolant loss, or overheating. Is there a white foamy substance under the oil cap, & air bubbles escaping from the radiator? If so you have a leak and more than likely it is a blown head gasket. I would have a cooling system pressure test run. Do not continue to drive this Ford in this condition. Something is not right and you need to find out what is going on.

Apr 09, 2010 | 2000 Ford Focus

1 Answer

SHO coolant leak?


Well this might be not too bad to oh ****. When the engine is cool have an assitant start your car. You stand with the radiator cap in your hand. Make sure the water level is at a level you can see it. When you start the engine look to see if you have bubbles coming up in the water/coolant. I have seen the bubbles from a small stream to boiling out of the top. So pay attention. If you have bubbles it is very possiable that you have a head gasket that has a crack from the cylinder head to the water jacket. If not have your cap checked. Now if this doesn't get to the problem, why are you saying dripping on the exhaust system. If you think you have a water leak in your radiator then you might find a water pressure checker. It is a device that allows you to pressure up the cooling system without starting the engine. Get a mirror and follow the water/coolant.

Dec 18, 2008 | 1995 Ford Taurus

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