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What could be the problem with my vehicle .when i start it they is no problem but if i drive it for 5 or more kilometres i hear a sound from the engine,like a knock sound then i park it

Recently purchased and has not gone for service

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  • Cars & Trucks Master
  • 4,514 Answers

Get it to a honest private mechanic--sounds like some major engine part is failing

Posted on Nov 19, 2014

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 398 Answers

SOURCE: 2002 s10 manual trans 2.2 engine knock (low end?)

check out your knock sensor , just a thought.

Posted on Mar 07, 2009

  • 1 Answer

SOURCE: engine or transmission knock / rattle upon

I had the same problem on my 2006 Lucerne and it was the engine mount located on the front of the vehicle behind the radiator.

Posted on Aug 24, 2009

  • 1619 Answers

SOURCE: Car jerks with loud knock when shifting from park to drive

Ok the knock is your flex discs on the drive shaft are bad along with the carrier bearing. Replace before you get stranded or it comes loose.
Fuel distributor may need work if it is hard to start when warm, Replace OVP relay by battery also, its always an issue.

Posted on May 16, 2010

  • 1 Answer

SOURCE: severe vibration and knocking sound!

My sons explorer had a similar problem. beleive it ior not, it was the shakles, they were severely wroughted, I changed them and the vibration is gone.

Take a look, it may help

Ken

Posted on Jun 07, 2010

ZJLimited
  • 17970 Answers

SOURCE: Infiniti G35 - 2006 Sedan

Smoke on start? Could be a valve problem where all your oil is in the bottom at start? Belts are squeaking too? Maybe a tensioner went bad?

Saw this service bulletin---

TAPPING / KNOCKING NOISE FROM ENGINE AT COLD START
This bulletin amends ITB02-049. This version amends the Applied Vehicles.
Please discard all paper copies of the earlier version.
APPLIED VEHICLE: 2002 - 2004 Q45 (F50)
2003 - 2004 M45 (Y34)
2003 - 2004 FX45 (S50) with V8 engine.
IF YOU CONFIRM:
A tapping or knocking noise (similar to a piston or valvetrain noise) when starting a cold engine,
NOTE: The engine is considered “cold” when it has been OFF (not running) for several hours.
ACTIONS:
1. Dislodge and remove any carbon deposits that may have caused the noise and confirm that carbon
deposits were the cause of the noise.
• While the noise is occurring, quickly rev the engine several times to approximately 4,000 RPM. Then
release the accelerator quickly, as soon as the engine reaches 4,000 RPM.
• The noise should disappear immediately if carbon deposits are the cause.
NOTE:
• If the customer reported a noise that exactly matches the symptoms listed above, but you cannot
duplicate it, the cause may still be carbon deposits. Go to step 2.
• If the noise does not stop after revving the engine, or you observe any other noise that doesn’t match
one described above, go back to ASIST for further diagnostic and repair information.
2. To prevent this incident from occurring again, add a bottle of Nissan In-Tank Fuel System Cleaner
P/N 999MP-FSC00P to a full tank of fuel (in the vehicle’s fuel tank) according to the instructions on the
label.
• This product is proven to reduce carbon deposits on pistons and combustion chambers, as well as
cleaning other components of the fuel system.

Hope helps.

Posted on Sep 08, 2010

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