What Causes High HC Hydrocarbons? Failed Smog Inspection for High HC. High HC Fix.

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🔍 Experiencing high Hydrocarbon (HC) levels in your smog test results? Don't worry; I've got you covered! In today's video, I address a viewer's question about failing a smog inspection due to elevated HC levels and provide insights into the possible causes and recommended fixes.
⚙️ Topics Covered:
Understanding HC Emissions
Common Causes of High HC Levels
DIY Tips for Lowering HC Emissions
Recommended Repairs and Maintenance
Q&A Session - Viewer Questions Answered!
🛠️ Whether you're preparing for a smog test or simply curious about maintaining a cleaner, more efficient vehicle, this video is packed with valuable information to help you troubleshoot and fix high HC emissions issues.
🔧 Ready to take control of your vehicle's emissions? Watch the video, and let's get your vehicle running cleaner and more efficiently. Don't forget to like, subscribe, and share this video with friends who might find it helpful!
#SmogTest #HighHC #EmissionsFix #DIYAutoRepair #CarMaintenance #CleanAir 🌍💙
If you have more questions or need further clarification on any topic discussed in this video, feel free to leave a comment below. Your feedback helps the community and keeps our engines running smoothly! 🛠️🚙
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Опубликовано:

20 фев 2024

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Комментарии : 12

@Robert-we9jp 2 месяца назад

I have a 1990 4 cylinder Toyota Camry. I barely passed hydrocarbons at 25 MPH, but failed at 15MPH. It drives fine, but miles per gallon has dropped somewhat. Already checked for vacuum leaks with carb cleaner spray - no idle speed changes. Had spark plugs replaced a couple of years ago with Iridium plugs, will pull and check them tomorrow (and clean them, check gapping). Hopefully there will be no oil in the spark plug holes (from leaking gaskets).

@RestoreITdontJunkIT Месяц назад

Thank you.

@ScottiesHobbies Месяц назад

my pleasure!

@jodawall Месяц назад

I have a 1992 Nissan pathfinder xe. Had a smog test performed. Everything passed except HC levels at 15 mph. At 15 mph the level was 119. At 25 mph it came down to 47. The technician advised me to start with my oxygen sensor as I’ve never replaced it. If that doesn’t fix it he suspects the catalytic converter. Any advice/ thoughts?

@joninvegas 26 дней назад

I have a 95 chevy c1500 5.7l that failed all emissions test. CO2 13.9\14.2 O2 0.7\0.6 HC (PPM) MAX 115\67 AVE 45\34 MEAS 181\169 CO% MAX 0.43\0.74 AVE 0.10\0.14 MEAS 0.69\0.66 NO (PPM) MAX 699\601 AVE 317\238 MEAS 1310\1099 Tested at 15mph\25mph respectively I have rebuilt the throttle body, new cap, rotor, icm, wires, plugs, MAP sensor, O2 sensor, EGR solenoid, ECM, temperature sensor. It was suggested it might be the catalytic converter since it previously passed smog in Nevada and I'm now living in California. Any suggestions where I go from here? TIA

@ScottiesHobbies 26 дней назад

Can you shoot me a picture of your readings? 925 418-5096

@susanaquintanilla5694 5 месяцев назад

I failed Deq do to high hydrocarbon for a ford f150 75 I changed the distributor cap the rotor and still doesn’t work I cleaned the carburetor and I installed all new gasket kit for it what else can I do ?

@ScottiesHobbies 5 месяцев назад

Carburetor.... I surprised that one is still running in a emissions inspection state.. but, did you check the spark plugs? Make sure the gap wag good? How are the wires? How is the Ignition timing? The Carburetor could need adjustment, but honestly, I am not a Carburetor guy.

@trixie9867 9 дней назад

Got a 98 S -10 - HC juist barely passed 2 years ago.. I'm due again.... Does cat cleaner help? 87 or 91 octane? Early morning when it is cooler or is it ok to go on a hot day in the afternoon?

@ScottiesHobbies 9 дней назад

How are you on a tune-up? Like the spark plugs and air filter? If you have not done a oil change in a while, fresh oil can help out a little too. Lastly, old pre-cat oxygen sensors could be replaced. Especially if they have over 100k miles on them. The time of day.... honestly won't make much of a difference. Just make sure you drive the vehicle for 20 ish minutes before you go in and try to get them to hurry and test it hot. I hope that helps!! Good luck! 🤞🏻💪🏻

@frankiejayy578 5 месяцев назад

Can you do a video for causes of high nox emissions

@ScottiesHobbies 5 месяцев назад

I'll try and get one done. Did you fail emissions? Can you picture message me your smog inspection? You can mark out your license plate and vin, if you'd like. Text me at (925) 418-5096.