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What could cause a car to run sluggish then make knocking noises have white smoke from the engine then die and not start again?
Wiki User
∙ 8y ago
Check your oil,- is it foamy?
Examine your coolant. Does it smell like oil?
Is the smoke sweet smelling?
Knocking has nothing to do with a head gasket, sounds like you have multiple engine issues to me.
And finally...if changing a head gasket is simple, why does it cost so much? because if you don't work on cars all the time it is most definitely not simple and includes timing belt removal usually.
Overheating can cause knocking. then refer to the above....
Your best bet is to replace your motor because usually the knocking noise is caused by a spun bearing which would cost a lot to repair.
*** New Below ***
The white smoke is from a blown headgasket, your coolant is leaking into one or more cylinders and that's actually steam that you see coming from your tailpipe.
When this happens, your coolant level drops (because it's pumping it out the tailpipe), your car overheats, and of course it will knock as it overheats. An overheated car is sluggish, as well.
Another bad thing that occurs by driving a car with this problem is that the coolant is washing the oil off your cylinder walls and your rings will tear up your cylinder walls as they self-destruct.
Head gasket replacement is not an easy fix nor is it cheap, and usually you'll need to get the head machined to make it perfectly straight again - heads warp from overheating. A good mechanic can do a head gasket replacement in a few hours.
- Dazani
This soudns like engine failure. Probably blew head gasket and ruined the engine due to it being run with bad head gasket too long.
You can find a god used engine with lower miles for around 800 at the most. usually more around 500 or 600 at most yards if you call around.
Labor to replace an engine we charge about 300 to 400 usually.
The car may not be worth doing this with however, some are not.
Most are though, if clean straight and drove fine.
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If your vehicle has a Diesel engine, then you may just be looking at 'fuel starvation'! All of the above are to a degree correct - but unlike Petrol engines, Diesel engines are also known to emit white smoke through the exhaust system when fuel delivery to the cylinders is restricted and give off the same appearance as a head-gasket problem.
This could also cause 'sluggishness' or lack of power, bad starting or non-starting and also a low type knocking noise.
Change the filter and check that the fuel lines are not clogged or restricted; you could even possibly run your own fuel supply line from a can to check this part out if it's easier for you!
Start the engine and rev it at about 3,000 rpm for a few minutes or take it for a short drive to see if it still loses power, if it still does then assuming all has been changed and cleaned, you might look to see if there is something in the fuel tank that could be blocking the supply pipe!
Wiki User
∙ 8y ago
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Why did your car make a loud noise than shut down?
Well it could be a number of things. If the car will not start or even turn over it may have seized the engine or spun a connecting rod bearing which is a major problem. If it does start up again and the loud noise continues, sounding like a knock u should not try to drive it to the shop. Shut it off and call a towing company. If it starts back up and doesn't make any noise it may be fine. Just keep an ear out for pinging and knocking sounds.
What are the Effects of driving car with no oil?
the engine will run hot and eventually it will blow on younot true.. if you have no oil in your engine it will not last long enough to overheat... the force of the pistons moving will cause so much friction, add that to the lack of lubrication and your engine will seize up and never work again...
What cause a engine knock and make the oil smell like gas this is a new motor in 2008 Nissan?
This is a sign of a very serious problem. DO NOT run this engine like this, especially under load!! Fuel in your oil basically means that the oil is incapable of lubricating the engine, you might as well run with no oil.The symptoms described in your question sound very much like the piston rings have failed in at least one cylinder. This allows fuel to go directly into the oil sump and would probably be accompanied by knocking noises usually referred to as 'piston slap'.There are multiple causes possible. The likely ones, regardless of engine age, are:Improper piston ring installation. (new or rebuilt engines)Improper engine break-in. (new or rebuilt engines and usually the driver's fault)Improper engine build or rebuild. (it happens)Defective rings. (again, it happens)Piston oiling malfunction in at least one cylinder causing the rings to fail.Long term ignition failure in one or more combustioin chambers could lead to raw fuel seeping into the oil sump.A blown out fuel injector would flood a cylinder with raw fuel which would seep into the oil sump.Bottom line: If the engine is new or freshly rebuilt, go after the seller right now for replacement, not repair. I wouldn't trust the engine after this unless all of the pistons are reringed and all of the cylinders are rebored or sleeved and all the valves resealed, etc., it's basically been run with no oil; Pretty much a complete rebuild anyways, but if you allow them to repair it, they will reuse as many parts and gaskets as possible to save themselves money; Reusing parts that may not be up to specification any more. If you paid for new, demand new. Don't wait, this problem is guaranteed to destroy your engine if it hasn't already.
Why does the ac get hotter when you give it gas then when the rpm goes down it get cold again?
The computer turns the AC clutch off when accelerating for maximum engine power. The AC compressor uses up some engine horse power.
94 5.8 Ford Bronco won't start without Starting Fluid It will run ok until I cut it off and the same will have to be done again what could cause this?
It could be as simple as a leaking fuel pressure regulator that allows fuel pressure to drop when the engine is turned off, and it's not getting up to pressure when you try to start the engine. Try this: Next time the engine sits for a while and you're ready to start it, turn the key on but don't try to start the engine. Leave the key on for about five seconds then turn it off. Repeat the process, THEN try to start the engine. It might help but then again, if it doesn't you aren't out anything.
Can a crank sensor make engine knock?
No it will not. Has nothing to do with engine knocking. You need to define the word KNOCK. Need to ask your question again. THANK YOU.
What can i use to stop the knocking in my 99 kia sportage?
ok where is the knocking coming from, brakes, engine ? only happens during acceleration ? if it is truly an engine knock, check oil immediately, but maybe to late, again need more info.
What does the word continuously mean?
It means over and over again. He continuously made popping noises noises to try and irritate me. This means that he made popping noises over and over again. Hope This Helps!
You have 85 celebrity 28 carb loud knocking from lower engine loss of power oil changed regulary no leakage usage took oil cap off with engine running looked dry could it be oil pump or rod knocking?
The rod knocking is caused by loss of oil pressure. Did the oil light not come on? That light is red, red means stop. Do not start this engine again until the problem is corrected. You are probably looking at way more than just installing a new oil pump if the engine was run for very long without oil pressure. A complete overhaul may be in order.
What causes a car Ford Taurus to make a knocking sound and feel at times as if it will shut off knocking is not constant?
SOUNDS LIKE THE ENGINE IS OVERHEATING, HOW OLD IS IT ??? ARE ANY OF THE DASH WARNING LIGHTS ON??? COULD ALSO BE THAT YOUR PLUGS NEED BADLY TO BE CHANGED , YOUR GETTING SPARK NOCK, DOES IT DO IT WORSE WHEN YOUR GOING UP HILL AND TRYING TO ACCILERATE??? WHAT YEAR AND WHAT MAKE??? ASK THE QUESTION AGAIN WITH MORE INFORMATION.
Why is your 99 jeep grand Cherokee engine knocking It stops knocking when I disconnect 6 injector connector.?
"knocking" is very broad so just a wild guess here. I think the reason the knocking stops when you disconnect the number 6 injector is; you are creating a "floating piston". In other words, this piston and cylinder are no longer producing power, they are no longer under a load, and they are no longer compressing the fuel that you have prevented from being injected into the cylinder. So, if you have something wrong with that cylinder, such as a bad piston, piston pin, connecting rod, rod bearing, etc., you have relieved the pressure which will quiet the knock. Again, just a wild guess!
The oil drain plug came off my Hyundai excel 99 while i was driving was making knockin noises and then the yellow check engine light came on the stearing went hard i turned it off will it run again?
Unfortunately, it sounds like your engine bearings (and maybe other parts) are damaged. Refill with oil, and if the noise is gone or almost gone, you are lucky. Otherwise,you will need an engine rebuild, or reoplacement engine.
How do you adjust valves on 50cc gy6 engine?
Take a look at the engine. If you stand on the side where the variator and the air filter are, to the left of the carburetor you will see a black cap-looking like part. its sitting on an oval-like cap which is held down by 2 or 4 bolts. You have to take the cap off, and you will see the mechanism for regulating the tention of the chain which drives the valves. From what Im thinking the problem seems to be in the valves knocking, which mostly happens due to the chain stretching out with time. Tighten the chain up a little bit, start the engine. As the knocking continues, turn it off and tighten again. repeat as needed.
How can you tell if sea-monkeys are ill?
They will be a little sluggish or will look tired (by sinking and suddenly moving again). Sea Medics can cure them noticeably.
Is there a sensor that cuts fiat bravos 1.4 engine if it gets too hot?
No, there isn't. If the engine runs too hot, you will start to hear squeaks and strange noises from the engine while driving, as the engine metal parts start to expand because of the excessive heat that will cause the engine's interior parts to have a more narrow space to move. This can burn the head gasket, which needs to be replaced or even worst, can eventually kill the engine, which then needs to it's parts replaced and re-tuned to work again.
Can an O2 sensor tps throttle switch prevent a car from starting?
I have a magna Executive with a o2 sensor. I have been having problems with ever since I had to replace the main computer under the dash. I keep getting chech engine wring lights on my dash. Since then I have had the engine checked and the o2 sensor repalced only thave to problem come back to me again and again and going back to the dealer. So I disconnected the sensor from the engine to the computer and the engine still starts and I get excelleration and the car runs, though it does run sluggish and feels fuel strvations is there, but yes you can run the car without the o2 sensor especially in a Magna TR....
What would cause a subaru impreza to knock and white smoke?
You need to be more specific about '...and white smoke' BEST CASE - If the white smoke is coming from under the hood, you have a coolant leak; the engine is knocking from overheating - do not run or drive for any extended period, or you will quickly push your engine towards the: WORST CASE - If the white smoke you mention is coming out of the exhaust, it is steam from water/antifreeze entering the combustion chamber, & the knocking may indicate broken piston/bent con rod. Most likely culprit: blown head gasket/cracked head & further engine damage from hydrostatic lock. Please don't start the engine again without determining the exact cause - the damage I described may or may not have already occurred beyond the point of repair; starting/running the engine further in it's current state will simply guarantee an engine replacement is in your future.
