put new head gaskets, lifters, trays, new seals in the head, new injectors, new coil packs, wires, plugs and still had a p0300
2026-08-20 20:48:26
684
Aintloud.Tim :
I’ve come to terms, if it starts n sounds fine, it’ll be fine. My oil pressure gauge been cracked at 80psi for 4 years now it’s leaked oil for idk how long but hey it makes boom boom
2026-08-20 21:52:27
70
a_4alx :
Mine was a clogged cat
2026-08-20 20:31:52
33
𝒟𝒶𝓋𝒾𝒹 𝑀 :
Until it starts flashing at you 🥀
2026-08-20 22:05:53
120
sergio📿 :
Got an 03 with a 5.3 From a 05 yukon, Runs perfectly fine while driving but at idle it has a random cylinder misfire but the check engine light doesn’t even come on nor any codes but still misfires, Did plugs, Coils, Wires, Injectors/Connectors, Manifold gaskets and It don’t go away… Im so confused😂😂
2026-08-21 04:36:07
1
Biggshawn24🇺🇸🦅🙍🏿♂️ :
It’s crazy to scroll and see all the different answers for this one code. I feel so at home.
2026-08-21 00:50:30
13
Vincent Bohmann :
Clogged cat
2026-08-21 00:15:53
44
cj m :
plugs and wires my g.
2026-08-20 21:12:26
8
Bully5.0 :
Me with knock sensors
2026-08-21 00:15:43
14
Morgan G :
mine doesn't have any codes but it has an intermittent crank no start🥲
2026-08-21 02:56:33
2
The Great Einz :
Shit mine just decided to never turn back on.🤣 died at the Lowe’s parking lot now Its been like 6 years parked full of junk. Still doesn’t run. No codes either. Same as my ford focus. Forgot to plug in the throttle body and now it’s junk lawn ornaments. Dealer ships and mechanics just ask for the price of my car because they won’t fix it unless I let them tear the whole car apart. I just need to learn to fly at this point. 🤣
2026-08-21 15:29:52
3
5.0_peyt :
Dw the p0300 got my 350z 🥲😢
2026-08-20 21:43:12
0
dat04sierra1500 :
Had a cyllender 6 misfire sense I got it. I replaced an injector, plugs, coil packs, plug wires, and it’s still choppin like it’s got a cam. Ppl tell me because of all of my exhaust leaks the O2 sensor in the exhaust is reading wrong so it’s dumping fuel. Try and look for exhaust leaks it should fix it
2026-08-20 22:38:52
2
jacksonn :
Turbanburban cuz it’s bouta blow up sonion ring
2026-08-22 03:42:07
1
cm punk860 :
Crank re-learn
2026-08-21 01:10:49
7
Chris :
Beyond easy to fix. All you have to do is pay
2026-08-21 15:51:29
9
a_4alx :
Pressure washed it and now it runs better
2026-08-20 20:32:06
8
lucylovesmikey666 :
I have a P0308 did spark plugs,wires to them,got a new fuel injector. Did compression test which passed and still got the issue. Also got the code for a evap purge valve changed it and thats still there too😭😭😭 and i need a smog in like 2 weeks
2026-08-21 08:28:48
1
Matt :
Inspect the camshaft
2026-08-20 23:49:58
0
user2302621567826 :
Can anyone help me with a P0455 (evap system detected large leak) I have an 06 Colorado 4cyl. I recently fixed a major misfire on it by replacing plugs, coil packs, the vent solenoid for the charcoal canister, and a pcv crankcase hose, and it’s still throwing that code and has a tiny misfire at idle
2026-08-21 05:52:08
4
Nate Villarreal :
It’s flashing but can do 90-100 easy still need injectors tho
2026-08-21 03:20:26
3
Minitruckin269 :
It’s the intake gaskets leaking hose
2026-08-21 14:12:28
4
Esjj305 :
Could be an egr valve could be a piston losing compression. Oh what a joy😂
2026-08-21 07:53:49
3
ericneli :
Just replace everything from the head gaskets up just to find out it’s a bad ground
2026-10-03 14:46:04
2
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