(VW Jetta) Diagnosing a P0300 and P0301 misfires codes

2012 VW Jetta GL 2.0L

[@ae70gts]

also typical problem with these wires . the wire's insulation at the tip fail and power is grounded to the metal cover before it reaches the spark plug .

[@8power0]

GOOD DIAGNOSTICS ,,, PLEASE KEEP THE VIDEOS COMING GOOD TO SEE YOU BACK 👍👍👍

[@EliTheOBDTech]

Thanks bro!

[@sethwolff2153]

Eli, very clear and comprehensive video applying scanner problem solving. As a noob, I learned alot. Hope you leep them coming

[@EliTheOBDTech]

Thanks for the support

[@gio5099]

I changed the sparkplug, wire plugs, ignition coil and tested the fuel injectors; they are good and still I have an engine light on and it rattles with lost of power.

[@AhmedAli-rg9iu]

Hi Eli, do you recommend going to iridium plugs on a 2015 VW Jetta 2.0L gas sohc.? I was having engine misfire & flashing check engine light sometimes when I was driving and accelerating, so I replaced my spark plugs, spark plug wires and ignition coil as well. Instead of putting in Bosch FR7HE02 which I saw in couple of youtube videos and which are Nickel plugs, I put in NGK ZFR6FIX-11 which are Iridium plugs, Also I replaced the wires with Denso Ignition wire set and Ignition Coil with NGK Ignition Coil. I don't have engine misfire or flashing check engine light anymore but I can hear like a sparking sound after some time when the engine starts. Do you know where I went wrong? Also could you please tell the name & model of the OBD scanner that you used in the video. Thank you

[@EliTheOBDTech]

Yes, only if the original spark plugs from manufacturer are Iridium. Sometimes the heat range of Iridium plugs can run too hot.

[@EliTheOBDTech]

Launch x431 Pros Mini

[@EliTheOBDTech]

It would be nice if you had capable scanner that can read misfire counts to make sure your replacement parts was a fix.

[@nathanaelrodriguez9490]

Most informational video i've seen by far ! Gracias

[@sebbykaiser6466]

I love seeing people properly diagnose cars. I own a mk6.5 jetta S with this motor mated to the 0AF transmission. I'm an apprentice mechanic and it bugs me seeing so-called DIYers throwing spark plugs and wires at a car to see if it fixes a misfire. Test, don't guess!

[@tjbaretta]

Will the check engine light need to be reset at the dealer or will it go off after the repair?

[@EliTheOBDTech]

@@tjbaretta If the PCM no longer sees any problems, the check engine light should go out after several drive cycles.

[@colinf5464]

Thank you for the great video. at 5:59 you say you are connected to chassis ground not the body negative. what does this mean and what is that wire connecting to that is showed on left hand side of vehicle? appreciate the help

[@EliTheOBDTech]

Hey Colin, chasis and body ground is pretty much the same. I was trying to convey that is not good to connect a test to battery negative post, it can cause an explosion to the battery.

[@colinf5464]

@@EliTheOBDTech Thank you, replaced my ignition coil and wires yesterday using this video and fixed my cylinder 2 misfire. great video

[@michaelherman5658]

Great video. What OBD Tool / App is that?

[@EliTheOBDTech]

It's an old scanner that I still own and use at times. Autoboss V30

[@kamaldhillon5622]

Good 👍👍👍👍👍🙏

[@keelyaguilar8102]

do you know the best spark plugs for a 1999 vw jetta mk4 4 cil?

[@EliTheOBDTech]

@@keelyaguilar8102 Here are the part numbers that recommended for that engine Part #: 101000062AB or 101-000-062-AB

[@therealimpact9673]

What’s the difference between ignition coil and plug wire

[@EliTheOBDTech]

Ignition coil is the unit that creates energy voltage spark to be delivered through the plug wires

[@MrMarcos1011]

Ive run into this issue and took it to the dealer they told me it was the sparkplugs and valve cover. Does the valvecover have ANYTHING to do with a cylinder 1 misfire? The car doesnt stutter, no loss of power no noticable loss of fuel economy no delayed crank. What do you think?

[@EliTheOBDTech]

Only of the valve cover gasket is leaking oil around the spark plug hole and allowing the plug to get wet with oil.

[@panchovillaxx7]

I have never seen a car throwing multiple misfires because of 1 wire,is because is motrinic? Good job and thanks for the vid

[@EliTheOBDTech]

It's some times do to companion cylinders or the computer can't detect the correct misfiring cylinder

[@jannowak368]

haw to replace fuel volume regulator control circut /open?

[@EliTheOBDTech]

Hey there, I haven't come across that scenario on a VW.

[@Iebaxos]

Do you know what it could be when my Volkswagen starts shaking because of the engine , like should I just get rid of it then because I don’t know how to fix cars :(

[@EliTheOBDTech]

It could be many things that can caused engine performance issues such as misfires due to bad ignition coils, plug wires, spark plugs, faulty injectors, faulty intake manifold gasket and worst case scenario mechanical problems such as low compression or faulty head gasket. Other possibilities would be jumped timing chain, faulty VVT control solenoid, cam sensor, crank sensor and faulty MAF sensor.

[@EliTheOBDTech]

Best thing is to have your vehicle checked out by a professional. If not, get your vehicle scanned by Autozone and have them print you a copy of all codes stored, if any are present.

[@Iebaxos]

@@EliTheOBDTech thank you I got P0300 random/multiple cylinder misfire detected and p0302 Cyl2 misfire P0301 Cyl 1 misfire and P0304 Cyl4 misfire and P0351 ignition coil A primary/secondary circuit and P050B cold start ignition timing and P130A hide cylinder, do you think it’s worth fixing up? Because I feel like the misfires are expensive and I don’t know what to do or if I should just sell it for scraps

[@EliTheOBDTech]

@@Iebaxos It's hard to say, you need to find the source of the problem first, to determine if it's worth fixing. You may have a jumped timing chain causing these codes or a faulty ignition coil module.

[@moeali254]

Hi hope u doin well I have Jetta 2013 and i have done injectiers cleaning and sparkling change after i did that some viberation appears when the car at N from time to time what is the solution Thanks

[@EliTheOBDTech]

What about your ignition coil?

[@jaysrt21]

Did you find the issue?

[@sandrabuell3940]

What is the name of the part??

[@EliTheOBDTech]

Can you be more specific on which part?

[@Mrfurballs]

my VW 2001 MK4 Golf gti VR6 has these codes , I read online that im running the wrong NGK spark plugs , Need the two prone NGKR ones .

[@EliTheOBDTech]

It is crucial to run the correct heat range spark plugs for your vehicle.