Question about Nissan Pulsar

2 Answers

I was told I have a rod bearing going out because of the knock in my engine. How do I find out which rod bearing it is and how do i replace it with the engine in the car?

Posted by on

  • szbadgirlgon Oct 12, 2010

    i'm new at fixing this car can you be more specific? what about pulling the spark plugs one at a time will that isolate the knock? How do i change the bearing once i figure out which one it is?

  • szbadgirlgon Oct 12, 2010

    thank you at least now i know i can do it with the engine in the car. That's not what i had been told

×

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,874 Answers

1. For find out which rod bearing is out of order you need to use an engine stethoscope.
2. You can replace the bad rod bearing with the engine in the car, by removing the oil pan and the cylinder head. I strongly recommend you to replace all rod bearings of the engine, (one complete kit).

Posted on Oct 12, 2010

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Nissan Master
  • 6,826 Answers

One could use a stethoscope, but this would not isolate the knock as coming from any particular cylinder except it would get louder the closer one would probe at the bottom of the engine.

I would say that an overhaul of the engine is in order, in which case, the rebuilder would be able to identify the bad rod bearing when changing the piston rod bearings out.

I'm afraid that the usual procedure is to take the cylinder head off and take the pistons out after removing the two bolts that hold each piston rod to the crankshaft.

This is a major job which requires pulling the head and the oil pan off, which is actually most of the engine.

Good luck on this repair.

Posted on Oct 12, 2010

  • Duane Wong
    Duane Wong Oct 12, 2010

    There's an idea, if you would remove the spark plug from each cylinder, the noise should change if it has less pressure on the piston.



    I could copy and paste some of the procedure on fixya.com if yo provided the year, make, and model of the vehicle as well as the engine size.



    However, the procedure is so long, that I doubt it will fit into the page.



    I would purchase the service manual from Chilton or Haynes and/or the factory repair manual in order to get a clear picture of what is involved.



    It is considered a major repair that requires special tools and know how.

    ---

    Fundamentally, you're right, the bearing failure is one that is simple. But, the procedure to do fix it is quite lengthy, in my experience, to do the job right.



    Good luck.

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

What's the torque on rod bearings?


Engine Noises ' Knocking and Ticking ' Common Causes

www.justautorepair.com/whats-wrong-with-my.../knocking-ticking
The following are causes of connecting rod bearing noise: ... Loose torque converter-to-flywheel or flywheel-to-crankshaft bolts will sound similar to bearing knock. .... I got a 1998 tahoe its making a lil ticking noise after I got unstuck on some ice ... 2001 FordTaurus with a loud mechanical noise that is constant when engine ...

Change 4.6L rod bearings with engine still in vehicle? 02 Explorer ...

www.ford-trucks.com > ... > Modular V8 (4.6L, 5.4L)
Aug 11, 2011 - The regular everyday rattling noises seemed to get louder than usual. ...So I dropped the pan and this is what I found: ... Is it possible to change the rod bearings with the engine still in the vehicle? ... If you decide to go with new bearings,torque your caps down on some plasti-gauge and see if you get the ... 7.3 engine r&r
Mar 22, 2012
Rod Bearing Replacement
Dec 27, 2010
More results from www.ford-trucks.com

Dec 28, 2015 | 2000 Ford Explorer

1 Answer

2009 Dodge Charger SXT 3.5L V6, has an engine knock, what is the cause?


Rod bearings are certainly a cause of knocking sound in an engine. You drive it hard? Don't change the oil, or let the oil run low? Have a whole lot of miles on it?

Jun 04, 2015 | 2009 Dodge Charger SXT

2 Answers

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

I have a 2002 sebring with thw dreaded 2.7l engine. I have had it for a year and a half and have gotten routine maintenance done on it . I went for my 60,000 mile check and evreything looked great. They...


I would run high-octane fuel for one round, and brand new spark plugs. Also, check to make sure that the timing is correct, and the MAP sensor is working. Run it for a bit. But I would not do this for very long. If the knocking persists, you might wish to drop the oil pan, and see if any of the pistons/rods are damaged ... perhaps it is a bearing going out. Either way, first make sure it is not fuel related, and then try and do some checks on your own, if you have jackstands, are comfortable with working under cars, have tools, can spot issues, and some plastigage helps. I hope that through some not quite basic, but not too hard tune up, the knock will go away, before requiring bearing work.

Jun 28, 2011 | 2002 Chrysler Sebring

1 Answer

I have a knock in my 2000 Toyota Tundra 4.7 V8 engine. It sounds like a rod knocing. However, I have been told that it is not a rod. Any ideas?


If you have a knock, then you have a bad rod bearing. If you have a tick, then you have a bad lifter or an out of adjustment rocker arm. One way to see what clyinder it is, is to have the engine warm and running. Then one by one remove a plug wire from a cylinder. Replace the wire and go to the next one and you should be able to hear a difference in the knocking. This will tell you which rod bearing is the issue. The best way is to take off the oil pan and give each rod cap a tap with a hammer. If you have a bad rod, it will have a hollow sound and the good ones will sound solid. I hope this helps.

Apr 10, 2011 | 2000 Toyota Tundra

2 Answers

I have a 2002 ram 1500 with 4.7 magnum truck


There are several reasons why you would hear a loud knock from the engine, and the knock will usually be either in the top end or in the lower or bottom end of the engine.

The first thing that should be done is to drain the engine oil, and then pour the oil filter into a pan where you can see it, and if there is a lot of metal flakes, or a fine cloud of brass floating in the engine oil, you will not want to waste the time or the money trying to repair that engine by dropping the oil pan and replacing the piston rod bearings, it will only be a very temporary patch at best, that is if the patch even lasts for a day.

If you do find metal flakes in the engine oil and oil filter, the piston rod bearings will not be the only bearings in the engine that will need to be replaced, and the crankshaft main bearings can only be replaced by removing the engine and placing it upside-down on a good engine stand. The biggest problem would be that even if you did successfully replace the piston rod and crankshaft main bearings, it would only take one piece of metal flake that was left over in the engine block to find its way to one of your new bearings and then it will take no time at all before that engine will be right back where you started, and that is how important just the cleaning process is in repairing or replacing internal engine components.

If you do not find any metal in the engine oil or oil filter, then you should attempt to find the actual cause of the knock before you decide how to repair the engine, and you will have to remove the engine oil pan to inspect the rod bearings, and if you do remove the engine oil pan make sure that when you inspect the rod bearings that you only do so one at a time because you can not mix up the rod caps, and be very sure that when you remove a rod cap that you do replace it the same way that it came off, and if you turn around the rod cap and install it the wrong way or scratch the crankshaft bearing surface the rod bearing will fail.

If you can hear the knocking louder from under the vehicle then the most likely causes for a lower end engine knock are a damaged piston, worn out piston rod bearings, a broken piston rod, a broken flex-plate, and sometimes loose torque converter to flex-plate bolts, and the only parts that you can really check out without opening up the engine would be a broken flex-plate, or for any loose torque converter to flex-plate bolts.

If you can hear the knocking more from the top of the engine, then the most likely causes for an upper engine knock would be a faulty lifter, or broken rocker arm, or a broken valve spring allowing the valve to contact the piston, and it will require the removal of the valve covers and possibly the intake manifold to inspect for the problem.

If you have any doubts then it would be a good idea to consider a good used engine that you can hear run before you buy it, or a rebuilt engine for that vehicle.

I hope that this information will help you out and save you some time and a lot of money.

Jun 07, 2010 | 2001 Dodge Ram 1500 Truck 2WD

2 Answers

How do i stop my rods from knocking


There is no cure for that other than taking out the engine and tearing it down and replacing the rod bearings. There is probably too much clearance between the bearings and the crank journals do to worn bearings.

Dec 21, 2009 | 1997 Buick LeSabre

1 Answer

2001 silverado - My engine knocks for a few


You may have a bad intake manifold gasket, which is leaking the antifreeze in to your engine. Note" Antifreeze is corrosive to the engine bearings" and the knocking your getting from the engine may be worn connecting rod bearing and the pistons are knocking till it warms up and expands to take up the space the worn bearings created. Replace the faulty gasket, change the engine oil and filter as much as possible to till you address the leak and add Restor engine treatment and Lucas oil treatment for now. This may stop or slow the knocking for now, but your going to have to tear the bottom end down and replace the crankshaft and connecting rod bearings if the knock has not gone away. As the weather starts to get colder, your going to have to warm up the engine before you start to drive, getting hard on the engine while it's still cold may cause the bearing to slip and then your looking at a bigger and more expensive job. Good luck and keep me posted.

Oct 28, 2009 | 2001 Chevrolet Silverado

1 Answer

MY ENGINE HAS A VERY SLIGHT KNOCK, I WAS TOLD THESE ENGINES HAVE NO ROD OR MAIN BEARINGS, AND IT JUST DOENST SOUND RIGHT. IS THIS TRUE?


While it is possible technically to build an engine that did not have bearings, the necessary machine work and metallurgy would make that so expensive that your engine would need to be about ten times more expensive to manufacture. Even if it was manufactured that way, engine life would be considerably shortened.
As there are hundreds of reasons not to produce an engine without bearings, and none on the benefit side, and, since I've opened up thousands of engines made by pretty much every manufacturer except kia, and all use bearings of one kind or another, I doubt if what you were told is even remotely true. If you have a slight knock, it can be caused by a rod bearing or a bad wrist-pin. a good tech can usually tell the difference by listening to it. Once identified, you can then plan how to go about correcting it.

Sep 26, 2009 | 2005 Kia Sephia

1 Answer

Knocking noise in 3.8 lit 95 ford taurus


You can not put a liquid where metal is supposed to be. Just a general rule of thumb. The high RPM's had been too much for the engine, and A rod bearing, or rod knocking is about the same thing. Dont try the heavier oil thing, I hate when ppl suggest such stuff. Just replace the bearing, or in most cases and cost efficent, the engine.

Jan 15, 2009 | 2002 Hyundai Santa Fe

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

89 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

76649 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

726 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...