@oneeyedgarage: Random misfire P0300 code could lead to replacing your engine. Sometimes repair cost more than just an engine swap. #oneeyedgarage #enginerepair #autorepair #automotive

oneeyedgarage
oneeyedgarage
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Region: US
Sunday 08 February 2026 18:08:40 GMT
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elsilverdlt
De La Torre :
Cylinder leak down test and no need to remove engine my boy
2026-02-10 01:03:08
102
nyck1111
nyck :
Did you check if the timing was off? A timing belt thats is off by one or two sprockets can create a misfire but still run on some cars. Especially if its a variable valve engine with turbo.
2026-04-03 23:06:09
1
chocogreybeard
92bmw :
did sommeone ban leak down tests?
2026-02-09 18:18:32
22
71on71
71on71 :
so why did we replace the engine? a valve reseating job or head replacement was needed..
2026-02-08 21:04:28
7
davidmarvel17
David Marvel :
Worst troubleshooting ever
2026-02-19 21:53:22
22
mcgillivray93
Adam McGillivray :
leak down tester would have told you what you needed to know. pull head send out for valve job.
2026-02-11 01:36:43
8
deecaddell
DollaBillDee😎🔛🔝💵 :
Lmao. All that for 2.5 warranty pay when all you had to do was a simple leak down test and got that diag😮‍💨😂
2026-02-26 02:44:44
1
honda_guy007
Honda guy :
Leaky valve can not cause misfiring..
2026-03-01 20:31:46
2
codyburgess07
Cody Burgess230 :
does the vin on the car start with a K?
2026-02-09 23:10:19
0
jeeptech97
jeeptech97 :
Do that air leak with a new head or recently rebuild head and you will see air bubbles too.. the air will slightly push the valve open and cause bubbles
2026-02-09 22:32:50
1
chuchos_rt
Jesus Abarca Penaloza :
That’s crazy ,bad valves I probably would’ve been spinning my wheels on this one. Doing the basic diagnosis maybe thinking it was bad injectors. Great job finding the problem bro stay blessed.
2026-02-08 19:25:18
6
mrrjmdxrdn1
tassla :
Could’ve found this with a leak down test. Then give the customer the option of pulling the engine apart.
2026-02-15 02:17:28
2
toysontheshelf
toysontheshelf :
The customer decided not to buy it after all he found somebody cheaper he said. If you could put it back together that would be great. Also he said he needs it by lunch time because his kid has soccer practice at 1
2026-03-07 10:53:35
1
mr.xxx336
Mr XxX :
So much work jus do leak down test
2026-02-16 15:40:23
1
a.southworth
a.southworth :
That’s a bad valve seat. Not valve.
2026-02-09 18:48:10
0
brianbronston
brianbronston :
Can’t afford a HF leak down test 20 bucks ?
2026-02-18 17:37:50
1
martyaguilar909niteowls
Marty Aguilar909 nite owls :
Q25
2026-03-10 02:52:14
0
fabian71100
Fabian :
My 2007 Alpina B7 P0300 code for misfire #1. Two exhaust valves and its holes in them. Head pulled 3/2/2026.
2026-03-03 15:09:19
3
user7170695234216
Nyc153 :
All you had to do was remove the spark plugs and the camera would have shown you this 🤷🏽‍♂️
2026-02-09 23:56:49
0
k153814
k153814 :
Ive driven my volvo b5202s with a misfire for 4K kilometers and now its at 260k😂
2026-04-23 21:20:36
0
alleenleegte
alleenleegte :
You could have done compression test to find out without taking out the whole engine
2026-04-27 13:05:26
0
tech.a.to.z.dev
tech A to Z dev :
na na na making a big mistake here shop air is compatible to break the limit of sealing capacity of valve spring if doing from back side
2026-02-16 14:44:47
0
sydneymhembere
SCM :
Nissan engine in the outlander I think🤣🤣🤣those engines often fail after 100k
2026-02-11 20:05:10
0
michaelvasquez2020
Michaelvasquez18 :
Nissan Altima QR25DE common head gasket too valve chamber fail
2026-02-09 21:50:49
0
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