Question about 2002 Nissan Xterra

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Low end knocking noise; 220K miles;

New timing chain 2 yrs ago;

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Remove the oil sender and fit a gauge must be over 7 psi at idle and 30 + at fast idle , if low remove oil pan and check oil pump pick up screen they some times get blocked with muck, If no blockage engine rebuild.

Posted on Dec 04, 2015

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Sounds like a bad rod bearing. if auto trans put in drive hold brake firmly with left foot gently push on gas pedal with right foot if knocking increases with engine rpms bad rod bearing time for engine rebuild

Posted on Dec 01, 2014

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1 Answer

2006 nissan murano 3.5 engine noise i thought it was timing chain got the cover off chain is tight what is that noise


How many miles on it? I have similar engine, and when oil is low, the timing chain tension system doesn't. At 120000 miles, I need to replace sparkplugs. I understand you can get the same sound when it needs new plugs... It's a pain to do.

Jun 30, 2015 | Nissan Murano Cars & Trucks

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My 2004 chevy trailblazer is knocking


could be a big end or main bearing but there are a few simple checks that can be done first
1--have the oil pressure checked using a mechanical gauge
if there is a bad bearing there will be low pressure at idle
2 --check the exhaust for smoke under load
if there is a bad bearing , the escaping oil will overload the oil ring and produce smoke
( if smoke comes after idling at lights and on taking off that is valve stem seals)
3--- run the fault codes and check for knock sensor problems
the noise could be detonation under load from lean fuel mixture or incorrect timing
4---check the ignition timing
5-- run the engine when it is knocking and remove a plug wire and see if the knocking stops
bearings will stop knocking if there is no combustion to place load on the crankshaft
That will also indicate which big end you have to check if you have to pull the sump
Too far advanced will cause the pistons to slap the cylinder walls hard for too far advanced ignition
you statement that the noise goes after 40 indicates that it is not a bearing as the high the rpm the louder the noise
taking the foot off the pedal indicates detonation
lastly if all the checks prove good , you could always have the sump removed and check each big end and main individually for damage
sometimes a failing cam chain if fitted ( no motor identified) will knock as the chain hits the timing cover

Jul 23, 2017 | 2004 Chevrolet TrailBlazer

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Knocking noise upper passenger side 99 expedition


have you changed the oil since it was rebuilt?? 2 quarts low is a lot. not suprising you may have a bad lifter

May 08, 2017 | 1999 Ford Expedition

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I own a 2005 altima w/ 180,000 miles on it. about a yr ago it started making a pecking noise.(the sound that makes you think it's low of oil, only the oil was fine) recently the pecking has gotten very...


Yes It could be the timing belt because as your car ages and the belt gets worn it starts to stretch. If your timing belt stretches enough your car will come out of time and that will cause a peck or knock. Another thing that you may look into if you have not had a tune up recently is spark plugs and wires. If you have worn plugs or wires it can also cause this to happen on occasion. I hope this helps you out.

Aug 26, 2011 | 2005 Nissan Altima

1 Answer

I have a 318i 1999 m it has a knocking/rattling noise when u rev above 3000 or accelerate. but when it drives no noise at all until u push down to overtake or speed off is the noise there. please...


Hi quintincoetz,

If your noise is a ratlling noise, more like a chain top end noise, then I would recommend first checking your oil level and condition. If the oil level is ok, you can remove the oil cap while the engine is running and look for oil lubrication on the valve train. It will probably splatter out a little. The most common cause of the noise is a failing timing chain tensioner. It allows the chain to have too much slack and slap against the guild rails. The tensioner is not too hard to replace and not very expensive either. If you have more than 100k miles, it is recommended to replace anyways. If your noise is more low pitched and more like a knock, I would recommend having a technician look at further.

Jun 22, 2011 | 1999 BMW 318 ti

1 Answer

1995 Ford Windstar Engine Knocking at startup. Driven 2800 miles since last oil/filter change. Oil level SAT, Coolant level SAT and no visible leakage. Engine completely rebuilt 2 years ago. Engine has...


No if the oil light has flickered you have oil pressure loss some time just belive the sensor do help us out. lifter do not cause oil pressure loss pressure is built in the rotation of the crankshaft. The knock under the plenum will point you to that cylinder that is affected, (main bearing) as for a 1995 the injectors can only cause a misfire but no knocking noise,will they honor the warranty

Apr 21, 2011 | 1995 Ford Windstar

3 Answers

4.3 vortec engine , engine noise, knocking or tapping on top of engine, not when cold , but starts noise when it heats up, and gets louder as it gets hotter and hotter!!! Sounds like noise is in the center...


The knocking or ticking is going to determine if it is in the top end, lifters, push-rod or rocker arm issue or the bottom end that would include pistons or bearings.
If it is a ticking noise, it will more than likely be a valve train issue.
If a knocking noise, piston or crankshaft related problem.

Attached is a web site that you can listen to a piston slap which is a known issue for your 4.3.
Listen to the noise and see if it sounds similar to your problem. A piston slap will generally sound as though it is coming from the central area of the engine.
Listen to the recording and let me know.
Regards,

Apr 19, 2009 | 1996 GMC Jimmy

1 Answer

91 oldsmobile cust cruisr, shuddering, engine loping


do u have a OBD 1 scan tool? try and find one on ebay for your car, I sold mine some time back, was $400 new got $50 for it, but I fixed allot of problems like yours because it allowed me to look at real time engine data going to and out of the engine control computer (ECM)

Feb 11, 2009 | 1991 Oldsmobile Custom Cruiser

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