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Knocking engine

Coulr this be just shells and is access easy

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Double posted, see 1st post on topic.

Posted on Nov 23, 2013

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Dursngo sounds like a valve or rod when acelerate and running bad

If it knocks heavy under acceleration it will be a big end first or a main second. Disconnect each plug wire until there is no knock under acceleration and that will point to the piston and big end that is faulty. Remove the sump and that big end bearing and if the crank is still good replace the bearing. As you cannot get a single bearing shell then it may be a good idea to replace all the big ends . On the back of the shell will be the size of the bearing in thousands of an inch so if it says .002" then you need shells that are that much over size. Take a shell into a spares department and just ask for bearings that match that shell.

Jan 22, 2014 | Cars & Trucks

1 Answer

Bottom end knock

which engine, ?????
the main bearings, pound and make deep sound under heavy engine load. the rod bearings are LOAD RAP RAP sound, like hitting the block with a ball peen hammer.. so does no gasket on exh. flange.
why guess. there are easy tests to find cause.
and if you meant main bearings shells, that is :
1: if just shells, and no damage its 20hrs labor or more.
if crank bad, add $150 for a regrind of same and new bearings.
same for rods,

buy the FSM and read the engine overhaul section its all there.

see this page on noise the black art.
see methods , used, for engine noise.....

the noise can be isolsated by some tricks.

Nov 19, 2013 | 2002 Jeep Grand Cherokee

1 Answer

Knock sensor

The knock sensor on many cars is fitted to the engine block. It is often about the width of a ping pong ball and may have two wires leading from it. They are generally easy to replace, depending on access. It should be something you can do yourself.

Nov 02, 2012 | Oldsmobile Cars & Trucks

1 Answer


You did not mention the year make and model, but unless it is a diesel I doubt the weight of oil would do it.
I would take it back as quick as possible before it locks up.
You have checked to make sure the oil level is full, right ?

Sep 20, 2012 | Cars & Trucks

1 Answer

How do i get to the freeze plug?

You don't say which engine you have, but most freeze plugs are accessed from underneath the vehicle. Sorry to say that they are never in an easy place to get too. The old one is easy to knock out or in which ever the case. Use a long screwdriver of pry bar to tap the edge of the old plug. Be careful not to scratch the hole that the plug sets into when knocking the old plug out.

Mar 24, 2012 | 2003 Chrysler Sebring

1 Answer

I have a 2003 chevy siverado 2500 hd and knock sensor code is on but truck runs smooth what should i check before taking it to dealership

Hi, the knock sensor helps the computer optimize ignition timing and yet avoid detonation. When the sensor fails, the computer defaults to a timing that is less fuel efficient. Replacing a knock sensor is usually easy, provided there is access under the engine. Depending on which engine you have, it's usually centered on the block just below the cylinder head. There is one sensor on each side, and the trouble code should have indicated bank 1 (driver's side) or bank 2 (passenger's side).
Please let me know if you have more questions, and thanks for using FixYa.

Typical knock sensor:


Mar 28, 2011 | Chevrolet 2500 Cars & Trucks

2 Answers

Low psi and knock at start up 2002 dodge dakata 125,000 miles, check engine light on

sounds like you have failed rod or crank bearing, this is causing the loss of oil pressure.

Nov 09, 2009 | 2002 Dodge Dakota Club Cab

2 Answers


Knocking sounds in the lower engine area usually are from loose/damaged connecting rod bearings. Repairs are centered around resurfacing or replacing the crankshaft and the associated bearings. (many penny!)

Oct 27, 2009 | 2002 Nissan Pathfinder

1 Answer

Knocking noise coming from air intake section on top of engine

The top section of the engine is called a '**** shell' there are baffles inside tha break away and knock. If you press down on this plastic section and the knock goes away. then you have to replace it. It unbolts usinh\g 10mm socket. You need a short one and a long one. also remove the IAC solenoid above the throttle body. **** shell is a dealer item only. also replace the gasket seal.
If the **** shell does'nt come, out gently use a pry bar between the throttle body and the cowl area, for more clearance.

Feb 21, 2009 | 2000 Ford Windstar

1 Answer

Does a honda prelude have main crank shells

The engine described has Crank shells but is is more likely to be the big end (Con Rod) shell or shells worn.
If the vehicle is driven with this fault it may throw a leg out the bed i.e. Snap the con rod sending the other half through the crankcase there by completely totalling the bottom half of the engine.
Paul 'W'
Onyer~EDson(:0) {#><
Please remember to politely rate my effort.

Jan 21, 2009 | 1992 Honda Prelude

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