Does rust cause a blown head gasket?

Does rust on the outside of an engine indicate a blown head gasket?

No not usually, but i guess it could. Try cleaning od the rust and the engine, then it should work again.

What does it mean if you have rust on first part of your oil dip stick?

Moisture is getting into the oil pan. If you are loosing coolant with no apparent leak then you may have a blown head gasket.

What could cause 94 jeep Cherokee sport dipstick to rust and it looks like mud or melted coffee ice cream on the end of dipstick. There has been no change in the coolant level or performance.?

there is water in the oil most likely from a blown head gasket or cracked head. Check the coolant level when cold to see if it is low.AnswerYou have water or anti-freeze in the oil. The most common cause is a blown headgasket.

Why would a Ford 390 blow white steam and water from one side of the dual exhaust?

You possibley have a blown head gasket on the side that is blowing water and steam. 390 s are good solid blocks pull the head on that side and check carefuly to see if you can spot the bypassed gasket. If not a gasket a good idea to have the heads checked for cracks then the engine. Small steps. could be a blown head gasket on that side, or a bad intake gasket. The side you see white smoke from has a head gasket or cracked head problem. If sparkplug has water or rust on it you have located the cyl of question. Is it the Intake manifold or head gasket. Water runing into intake valve would be noticeable when you pull the intake manifold. You might hear knock when motor is hot, that would indicate steam knock from blown head gasket. Piston in question would be steam clean from antifreeze hard blast on ignition................. ........ do a compression test, a week cylinder could indicate not only a blown head gasket but also tell you what cylinder.

W reg astra 17 dti 16v Isuzu engine with head gasket gone have strip it down and one of the head bolts had a bit of rust on it is it head gasket caused it or do you have a crack in the lower?

Hi Don't panic this is normally caused by the failed head gasket seeping coolant on to the head bolts It is very unlikely the block is cracked best wishes

If the antifreeze looks like chocolate milk what can that be a sign of?

To my knowledge brown antifreeze is a sign of a blown head gasket. If its been in there a while (years with alot of mileage) this is the sand that has broken away left over from casting the engine block. if its this bad YOU REALLY NEED TO FLUSH THE SYSTEM! Its mud and rust litterally.

Why does a radiator crack?

There are several reasons why a radiator can crack. The list includes rust, a faulty thermostat, a leaking head gasket, and extreme heat and cold.

How do you know if your water pump went out?

Often it will make a horrible screaming sound. This usually begins when the car is started or turned off and later becomes noticable all the time before it fails. Serious overheating after driving about 5 - 10 minutes is usually due to a failed water pump or the lower reservoir of the radiator being empty (sometime both). A blown head gasket or rust fouling the radiator can produce the same symptoms, but the blown head gasket will usually have other symptoms, too, such as running very roughly, white smoke, even a machine gun like sound from the engine. Rust fouling the radiator or an empty cooling system are pretty easy to spot.

What causes air to escape from spark plug hole next to the one being tested?

if you can test them you should know this! try tightening the plug. if it has been removed, check for rust scale or other debris on the plug or hole. If the plugs are all removed and you are doing a compression test and air is coming out another hole, then you have a blown head gasket.

Do car magnets cause rust?

Car magnets doesn't cause rust.

What are the signs of a blown head gasket?

Signs of a Blown Head GasketNote: You can only truly confirm your suspicion by actually seeing the gasket, although precursor signs are usually evident.Input from s.com contributors:If you see coolant leaking from the water pump, I would pressure-test it and pinpoint the leak and fix that first; oil seepage isn't necessarily abnormal.Typical symptoms of a blown head gasket may include these: bubbles of air coming up into your radiator (remove cap before starting); a leaking radiator; milkshake-colored oil; overheating; rough running; coolant or oil running from head; spark plug(s) that have a green tint (if green coolant); white-colored or sweet-smelling exhaust.White smoke from your tail pipe, or loosing coolant through your overflow. Take the cap off and rev the engine: if you see bubbles, or if it comes out, you'll know.A blown head gasket will leave a dark smell in the radiator. And you will have high back pressure coming though your radiator cap.Take your car to a radiator shop to have a detector installed: If the blue liquid inside a "bulb" turns yellow, you have a leak.Beware that if you drive for too long and it overheats, a blown engine will be your outcome.A blown head gasket can go out in different areas causing different symptoms. Do a compression test to give you some idea. Don't confuse low compression for a bad head gasket, though. A bad valve can lower compression. And a bad ring.There are lots of clues you can look for. When in doubt and you have tried everything, have the head checked out by a well-established machine shop first, to see if the head was the problem. This way you're not wasting your time replacing the gasket.My car once had a blown head gasket. I had a great deal of coolant loss. The engine lacked power and ran poorly. It had white smoke coming out the tail pipe. And it overheated very quickly. Also, it had water in the oil.A quick way to check: Look at your spark plugs; if coolant squirts out, you definitely have a blown head gasket!Low compression does not necessarily mean a blown head gasket, but it is a good indicator if there is a sharp drop in compression on one or two cylinders, with no drop in the others. Sometimes a blown head gasket will cause a whistling or wheezing sound, but not always. It will not always cause water to enter the oil - or oil to enter the water - but they are signs to look for. Overheating will almost always occur, due to the exhaust entering the coolant. Check your overflow bottle for exhaust smells. Watch for bubbles or overflow of coolant from the radiator while running the engine. Check for muddy gray-looking oil or bubbles on the dipstick.Often (but not always), a blown head gasket will also cause deposit of water on a piece of cardboard held an inch from the tailpipe output while the engine is running (when this is happening, it is likely that the catalytic converter has been ruined and the muffler will corrode in short order as well). Sometimes drops of water will be seen dropping from the end of the tailpipe.Another clue: Turn on the heater; often when the head gasket is blown an odor of antifreeze and synthetic rubber will emanate from the heater vents.Many of the symptoms of a blown head gasket can be caused by some other problem in the cooling system, without the head gasket being damaged. Conversely, other problems with the cooling system can cause a blown head gasket and/or warped head. For example, a corroding radiator can send chunks of rust through the cooling system which take out the thermostat and water pump. If the thermostat is old, sticking and corroding, it can send those chunks through the system and take out the water pump or cause a blockage in the radiator, etc.Radiator leaks can be the primary cause, or a result, of failures in other cooling system components.Don't keep driving with the car overheated, especially if your engine has an aluminum head; you are likely to warp it. If it is warped beyond a certain tolerance, it cannot be planed and will have to be replaced when the head gasket is replaced.One of the most common tell-tale signs is a milky-gray ring around your oil cap. When coolant enters the engine oil through a crack in the head or through a blown gasket, it evaporates and leaves a milky ring around the oil cap. Another easy way to tell is to check your oil dipstick. Change your oil and pull out the dipstick. Make sure that you take note of how far up the dipstick the oil is. Top off your cooling system and fill your cooling reservoir to the top. Screw radiator cap back on and start engine. Run engine for about 20-30 minutes or until it reaches normal operating temperature. Allow engine to cool (engine must cool completely to get accurate oil reading). Check oil dipstick again. If the oil has a watery appearance and has risen noticeably up the dipstick, then you probably have a blown head gasket or a warped head. Also, look for a sweet-smelling liquid coming out of your tailpipe. Any of the above symptoms could be the result of a blown head gasket.The easiest way to tell is with a compression meter. This replaces the spark plug and lets you know what compression each cylinder is running at. If your compression is abnormally low, then you have a blown head gasket or a warped head. (Note: check the repair manual for appropriate compression of each cylinder.)This can be detected in a variety of ways: One way is to note whether that part of the engine block is leaking fluid. This is difficult to determine since there are many other parts of the engine nearby that can also leak fluids, especially when a vehicle is parked in one place for more than a few hours. One of the best indications of a blown, or nearly blown, head gasket in most automobiles is when the cooling system appears to be malfunctioning. The cooling system's efficiency and performance can be directly affected by the quality of the head gasket.If your radiator is getting low on water often, this is a sign. The water could be discharged through the tailpipe on your automobile. Another sign is if your car motor has a miss in the engine. The water could be going in on top of the cylinders. This will foul the plugs and cause it to miss.There are a few simple indicators you can check for with the engine cold and not running: 1) contaminated oil - it will have a milky appearance from the water mixing in the oil 2) oil on the top of the coolant inside the radiator (if your vehicle has a remote header tank you may not get this); 3) Have someone crank (remove the coil lead or disable the electronic ignition) the engine on the starter with the radiator cap or coolant jacket bleed hose/bolt removed. If the coolant pulses up and down or blows bubbles, you could be in trouble. If you find any of these symptoms move on to removing the spark plugs (label the plugs and the leads as you remove them, so you can put them back in the same place) and again crank the engine on the starter. Depending on how badly your head or gasket is gone, you may get coolant or oil coming out of the plug holes. Inspection of the plugs will also reveal problems during combustion: if you have rusty flaky deposits on the plugs, you may be burning off water; and if you have a heavy carbon, you are burning oil. If you have any of the first 3 items listed (water in oil, oil in water, or pulsing coolant - but don't get any result from checking the plugs) change the oil and water as appropriate, then warm up the engine without the radiator cap on (or the bleeder hose/bolt) and watch for bubbles as the engine warms up. Put the cap back on the cooling system and take the vehicle for a short drive, or run the engine till the entire system is up to temperature and then check the oil for contamination. Having these symptoms is not always indicative of a blown head gasket; usually if the gasket is gone, there is going to be some warping of the head and or block of the engine.Loss of engine coolant with no external leaks, a continuous stream of bubbles can be seen with the radiator cap off, black gummy and sometimes crusty stuff around the radiatorSeveral common signs of a blown head gasket:Blue/white smoke coming out the tail pipe which indicates oil is burningDripping oil from the gasket itselfCarbon Monoxide or hydrocarbons in the cooling reservoirExcessive coolant loss with no obvious source of leakageLoss of power or a rough engine due to compression lossWater mixing with oilOil mixing with waterLow compression in 2 or more adjacent cylindersRemove dipstick and let a drop of fluid fall on hot part of engine - oil will smoke water will "sizzle"

Does hydrogen cause rust?

no, oxygen causes rust.