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Engine problems If someone says that a engine has a rod knocking does that mean that a rod bearing has spun?

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It depends on the knocking sound its self, but it could be a wrist pin instead of a spun bearing

Posted on Jan 04, 2008

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It can be a spun bearing or the rod itself gets wore out and stretches into an egg shape this will also cause a knock but usually when a bearing spins it will make the engine hard to crank over. then as it wears out the knock will develope, or it will just suddenly appear and the blow apart.

Posted on Dec 22, 2007

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Posted on Jan 02, 2017

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2 Answers

What is the deep internal knock coming from moter on 2002 dodge durango v8


deep lower engine knock can possible be whats called rod knock --where damage to a piston rod either spun bearing ,wrist pin,crack bent causing it to slap on crank or piston cylinder

May 04, 2017 | Dodge Cars & Trucks

1 Answer

99 olds.intruge 3.5 engine


loud knocking internal lower part of engine usually means [ rod knock ] --bad wrist pin -spun bearing -or piston ring]s] --that the worst other can be timing failure --or component failure --you need to isolate the noise and diagnose from there

Oct 01, 2016 | Cars & Trucks

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I have a 2001 cadilac deville that has a wicked knock in the engine. it is a rod knock (from the sound) so i figure my options are to change the engine, or change the rod ect. I wanna know if the engine...


Thats going to be a tricky pull. you can actually do BOTH methods fro pulling that motor. Which ever is easier for you would be better.

As far as the rod knock. Rod knock simply means that the rod bearing has spun and is no longer a smooth surface. potentially, you could pull the motor and replace just that rod and bearing if the crankshaft was unaffected. the majority of the time, more work needs to be done. I think in this case, it may be cheaper to remove the motor and replace the crank and bearings. A replacement used motor will probably run about 1k if you can find one at a yard.

Apr 07, 2014 | 2001 Cadillac DeVille

1 Answer

Engine knocking noise


this could be a rod knock. it would require droping the oil pan. a rod cap could be loose or it could be a spun bearing. this could also mean having to replace the crank shaft. hopefully it is an accessory on the engine that is loose

Feb 18, 2012 | 2007 Hyundai Tucson 2.7

1 Answer

Got a 94 integra this kidd left the oil cap off now it has a real bad knocking i dont think its a rod cause i can turn the motor at the front with a socket what do you think it could be and is it worth it...


Being able to turn the engine just means that it is not seized up yet, but there can still be a spun rod bearing or crank bearing, and the engine will still turn over until it seizes up.

If the engine is full of engine oil and it is making a loud knocking sound, especially from the lower end of the engine (sounds like someone is swinging around a ball peen hammer inside of the engine), then it will most likely be needing a new engine very soon.

May 05, 2010 | 1994 Acura Integra

1 Answer

My 1996 gmc jimmy is making loud knocking noise when I start it and shaking and sounds like it will cut off at any moment and the engine check light is on I know I have to take it in but you give me some...


Spun bearing = time for engine rebuilt. Sounds like your engine spun a crank shaft bearing or connecting rod pin is loose or worn out. If your lucky, it may just be a worn distributor gear that is causing your knocking due to bad timing.
Good luck and try not to run the engine with the knocking, it may be a simple fix that will lead to a major problem.
Thank you for using fixya and is the engine oil level right where it suppose to be???

Apr 09, 2010 | 1996 GMC Jimmy

2 Answers

2002 Mazda Protege 5 knocking engine


Uhh there are no rods in the head. That dealer has a loose rod in his head maybe.
The crank, rods and pistons are all in the bottom end of the engine.
What it likely is is either a broken piston skirt or a spun rod bearing.
Spun crank bearings are rare and sound deep.
A spun rod bearing can be fairly quiet on idle depending how bad it is worn out, but it will be really loud on acceleration. Piston slap from a broken skirt can be pretty loud too but it mostly sounds like diesel rattle only a bit less. Some have described it as a loud pinging sound like detonation.
Drain the oil and check for metal debri. If you can tilt the vehicle a bit for the oil to drain more towards the drain hole that could help. Then look for metal pieces and judge their size. There should be NO glitter whatsoever in engine oil, or any kind of debri. Now a rear end or transmission is different. Those always have a little metalic sheen to them.
Best of luck.

Apr 01, 2010 | 1986 Mazda 626 Coupe

1 Answer

Oil pump went out replaced it. now the truck wont turn over.


Usually a knocking noise means that a rod bearing is worn out. Since your oil pump was replaced, you may have spun a bearing. I would suggest that your engine needs to be replaced.

May 20, 2009 | 2000 Chevrolet S-10

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