0
Just put replacement cylinder head on and there is a loud knocking from top of engine?
Wiki User
∙ 12y ago
Sounds like something fell on top of one of the pistons. I had this happen to me once. A check ball out of the carberator fell on one of the pistons.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
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!
How do you fix a knocking noise coming from engine?
Cant you just ask the people at the car place?
Could that knocking noise from the engine and that smoke coming from the muffler have anything to do with the car not starting?
If you have knocking from the engine and smoke from the exhaust then you have far more problems than the car just not starting. Sick professional help immediately.
1999 subaru impreza 2.5rs is knocking after your rear wheel bearing broke?
If its the engine knockins their is no connection just a quicondense. If the knocking is in the rear could be a cracked rotor or something.
What is the knocking noise in 350 Chevy only after it warms up?
Probably worn engine bearings. When the engine oil is cool, it's thicker, sometimes just thick enough to keep a worn rod or main bearing from knocking.
Why is your engine knocking on BMW745?
knocking as in spark knock? or engine knock? spark knock is adjusted through a knock sensor via ignition timing. eng. knock is due to brg. knock as in low oil pressure or sluge in engine or just a tired motor
What damage is done if I accidentally put 87 octane instead of 91 octane into my 03 Aviator?
There most likely will not be any long-term damage. On this tank of gas, you may experience "knocking" or "pinging" in the engine, meaning that the gasoline may ignite prematurely in the cylinder. If the knocking is severe and/or continues for a long time, it could cause engine damage. On the other hand, if the engine runs just fine on the lower-octane fuel, then there's no problem at all.
What is the function of engine cylinder?
The cylinder is where your piston runs, so in easy terms its just your piston housing. So a 4 cylinder engine simply means it has 4 pistons and so on.
I have 2005 gmc sierra with a 4.8L vortec engine. One cylinder is misfiring so it's causing the engine to make a ticking or knocking noise.?
are you sure its a cylinder? i just had to replace one of the lifters and cam in my 09 silverado 4.8L. the lifter had gone bad and wore into the lobe of the cam at 45500 miles. lucky for me it was all warranty work thru the pwrtrain warranty. it sounded like a loud bird chirping in sync with RPM change. just a thought for you.
What causes a knocking sound in your car?
many many things, Loose lug nuts which lets wheel make knocking noise. Engine will make a knocking noise if it is really low on oil. Some timing belts make a knocking, slapping noise just before they break.These are just a few examples . Have someone ride in car with you as you duplcate the noise and see if they can determine which part of the vehicle it is coming from.
What is the difference between a diesel engine and a petrol engine - mixing of the air and fuel?
in the original gasoline (petrol) engine fuel and air were premixed in a carburetor before entering the cylinder through the intake valve, ignition is caused later when the spark plug fires (to prevent high compression high power engines from knocking and thus damaging themselves it was necessary to use only high octane fuel, which typically required adding tetraethyl lead a deadly poison to the fuel)in the diesel engine the fuel is injected into the air filled cylinder at maximum compression and instantly ignites (from the heat of compression)in the modern fuel injected gasoline (petrol) engine fuel is injected into the air filled cylinder just before the spark plug fires (to prevent the chance of knocking (i.e. preignition) because of use of low octane fuel)
How do you help engine knocking?
there are a few reasons for engines knocking......... - bad type of fuel - higher gear ratio at slower speeds if your engine knocks when you start it up then you have probably got a bad or dirty fuel in your car... change the filters or just get away with using it and change your petrol station if the engine knocking happens during driving then its because you are putting more gas on at lower speeds and higher gear ratios...you just need to lower your gear. say change from gear 3 to gear 2 and try increasing the gas gradually and slowly and the knocking should go away....
