Vapor lock. You opened the gas cap and it released the pressure. It only works when the vehicle is running
2026-11-10 06:16:52
37
C63S_Fantazma :
Maybe a timing chain tensioner
2026-11-10 04:33:41
18
Spencer Totten :
If the other car knocks now, it was the gas! 🤣
2026-11-10 04:23:57
203
Yan Zhang MD :
yes, cheap gas could make a premium car knock. This car need 91 gas.
2026-11-10 03:39:21
317
vla-da🪖|🩸🇺🇲🇮🇱🪓 :
combombulator is probably loose
2026-11-10 06:15:34
65
PKT Revenant :
Probably there was some debris obstructing the fuel pump and it was sending intermittent fuel and air... hopefully the Jetta won't be suffering with the transfer
2026-11-10 03:14:25
48
cyb3rsword :
My dad had a 2010 one, same thing happened after we started it after 2.5 years. Mechanic said it’s something with the engine computer that messes up the ignition timing and knock sensors when there is old or bad gas in it
2026-11-10 03:00:49
114
markycigs8 :
Check those cylinder walls lo
2026-11-10 13:46:55
0
Zachariah Henry :
Over time, volatile components in gasoline evaporate, lowering its octane rating and resistance to pre ignition. This causes the fuel to ignite prematurely from cylinder pressure rather than the spark, creating that knocking sound. The key misconception is that old gas is just weak, when really it's become too unstable and combusts
2026-11-10 13:28:37
1
Ichie Billions :
i want to buy it
2026-11-10 13:30:39
0
saad 🇲🇦 :
The last owner
2026-11-10 02:58:10
129
Dean Mclaughlin485 :
I would check the timing chain it might be loose
2026-11-10 13:21:50
0
LUDWIG ZLK :
dayligth drive GOLF my boy not a jetta
2026-11-10 04:44:38
1
sup_a6 :
Could have been evap system, there are so many valves, flaps and vaacum hoses in the system so simply after opening gas tank, the vaacum could have been released
2026-11-10 06:38:31
10
Mach :
Could the old fuel have caused a vacuum and when you undone the fuel filler cap it equalised?
2026-11-10 03:14:06
14
VoloST :
Bad gas my guy 😭
2026-11-10 04:13:33
6
V_DUB67 :
Wait is the mk7 jetta your reffering to a jetta or golf 7 estate cause in Bosnia they call it a golf
2026-11-10 03:51:44
0
Kv Monteiro655 :
nope the gas canister is either leaking or blocked
2026-11-10 05:25:15
12
runawaykillian :
Being so early, the video lagging and it’s making me mad🤣🤣
2026-11-10 02:55:30
24
T.Tech :
is it me or there's a ticking sound. might not be knocking but I still hear a ticking sound. 🤔
2026-11-10 03:22:24
12
john :
condensation from the humidity in the air in the half full tank settled into a bit of water.
.
pumping it out you took the water from the bottom of the tank fixing the issue and put it into your car.. oops.
.
we drain a small amount from our tanks on our boat for this exact reason
2026-11-10 04:48:29
7
HondaHeadd :
Definitely a possibility of either bad gas or the wrong gas. that vehicle is supposed to take premium. if regular got put in it can cause detonation which could cause a knocking sound.
2026-11-10 03:45:17
6
Hector Blabla :
greetings from mexico!! love your videos!!
2026-11-10 02:54:46
5
MeLaPlaz :
Its the combobulator 💯percent sure!!
2026-11-10 05:13:07
7
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