Sounds like knocking or miss firing at cold start. Anyone else have ...

05 Duramax lly knocking/tapping noise diagnostic and cold start.

compression test leads me to a slightly unexpected result. looks like we need a engine.

Technical - small block knocking sound on cold start, balancer?

Sounds to me like its coming from the harmonic balancer. I move my head all around the motor and put my hands on anything that's not moving, and ...

Missfiring and knocking engine. Anything to try?

The engine did not starts immediately, then had a hard knock. The engine eventually started and now it is making knocking noise with misfire ...

N54 missfires and knocking noice - BMW 3-Series (E90 E92) Forum

On my 335i I was having a misfire on warm starts, when it did it, it does sound like rod knock. After chasing the misfire with plugs, coils ...

Tap/tick on cold start (video)? - Acura Enthusiast Community

From what it sounds like is you have a bad tensioner. The puller is part of the tnesioner itself, which is hydraulic. When the tensioner is cold it makes noise.

2007 CRV cold start tapping/knocking

The key point is, the sound occurs when cold. My guesses are its nothing to do with stuff that the serpentine belt turns. You say it sounds like ...

Funky cold start noise | Toyota FJ Cruiser Forum

I know its hard to diagnose without hearing but thought maybe someone else may have had the same issue. ... If its sounds like an engine knock ...

Engine knocking badly at the first(cold) start - VW Beetle Forum

So, while I could not decipher any of the "knocking" sounds from your first video; it could be something as simple, as the lifters being dirty ...

Auris rattles on cold starts - Toyota Forum - Toyota Owners Club

Hi everyone! I really need your help asap. My Toyota Auris hybrid 2013 has a weird sound on cold starts (kind of knocking sound) and this ...

Knocking sound from back end??? - Cobalt SS Network

Condition/Concern: A noise may be heard from the rear of vehicle; typically 3-5 knocks during initial cold start. The noise may sound like ...

cold start knock - 6-6-6 | Drive Accord Honda Forums

That's completely NORMAL. Mine has been knocking for 4+ years only when cold. If you don't like that, do another valve adjustment. The sounds ...

bad knock when cold???? - Nissan XTerra Forum

this seems to be temperature related, the warmer it is outside the less noticeable the noise is. also once the engine is warmed up, the knock is ...

tapping noise during cold acceleration - GenVibe

Mine has become worse over time - it started out as a bit of a tick, but now it is more of a knock, thus spawning the name of my car, Sir ...

Rod knock on cold start - NASIOC

Rod knocks do not go away, if they are out of tolerance, they go away, when it has oil enough for the given tolerance (seems simple to type out ...

Cold Start Ticking/Tapping/Knocking Noise - Honda Pilot Forums

If you experience a fast-tapping noise at cold start up that fades as the vehicle warms up it is likely that the timing belt tensioner is going out.

Start Up Knocking Sound **With Video** | IW STi Forum

Inspected the oil pan and filter for metal and found nothing. Made the same loud ticking/knocking upon startup and slowly got quieter as the car ...

2019 Raptor cold engine knock

Yeah, cam phaser ( the failure to “park” the cam phaser correctly ) manifests after a cold soak start, 12+ hours without running, upon startup ...

Strange sound at cold start up | Sprinter-Source.com

I've had this on other vehicles. Starter out, lube etc solved it. Haven't seen this issue reported often on this forum. A video of the noise ...

3.6 knocking start - Subaru Outback Forums

As mentioned above, a thorough scanning for codes should be a first step to diagnosing this issue. Was it a knocking akin to a fuel knock, or ...

Engine knock on cold startup! - Ford Taurus Forum

The knock on a cold engine usually means the old is not flowing to the bearings as fast as it should. But you are using thin oil so that really should not be ...