thank you for the great tutorial and you are right a car vw golf mk5 fuel tank cap if it's not genuine it will cause random error for low fuel tank pressure causing the engine to limit it's max rpm even with full throttle is pushed down . 👋👋
Hi there , your video is great and was giving a great detail on the evap , I originally was looking how to fix my problem with the car . So far was not able to find the problem, hope maybe someone here will be able to ... When I put gas in the tank it trigger up right a way and some gasoline goes out a little , don't matter if it half empty or completely empty but if I put it in a slow barely triggering it in it will fill but I am standing there and holding it for 30 minutes to fill , was being in a shape and they changed the charcoal canister and the back valve but still have the same problem...have no code at all ...
What type of car, year, make & model? How long has this been happening? Did you have any recent repairs done prior to this starting? Where are you located?
@Master Automotive Training it is nissan frontier 2004 , I got the car about a year ago and it . And on my first fill up it cleared on me , I did the driver valve cover on it at that time . And as of the problem to filling up I taked it to a shop where they replace the charcoal canister with the valve in it . But the problem still there ...
Had a P0446 code. Replaced vent solenoid and gas cap. Solenoid was bad for certain but now the code comes back only after the cap is put back on after refueling. So if I delete the code after I refuel each time the money light stays off until the next refuel. 2005 colorado
You haven’t fixed the problem at all. You misdiagnosed it. It’s a faulty Fuel Tank Pressure Sensor that’s sits in the top of the Fuel Pump and Gas Tank. This is common. I just did this repair on Monday. Dropped the tank and replaced the sensor. Erased the P0446 code and it runs great and the code is not returning. 2019 Chevy Colorado I believe. And yes I am a professional technician.
Engine running,front door open,back door closed..........engine off, front door closed, back door open....you have to command the back door closed via scanner....to check for leaks,,,,but if the back door stays open while command closed ....clamp off the hose to it then check for leak, if no leak...well by now you know the back door is the prob...but still check for power and control always....
Capless systems are the same if its a vacuum decay system. It has a springloaded closure flap inside. Your fuel door acts as a seal to keep dirt out of the closure flap.
oye tengo un problema tengo un minicuper 2007 n12 no turbo digamos que le puse motor ajustado válvulas. capuchones. y tapa de válvulas nueva claro válvula pcv nueba por la manguera de recirculacion de gases esta jalando aceite . al parecer creo que tiene mucha presión al jalar grado que aspira aceite mucho .y empieza ha fallar una bujía o el sensor de el árbol de levas intake después de quemar el aceite
But is it possible to have an evap leak that isn't being detected (no trouble codes)? I'm trying to solve my vacuum issue. At highway speeds 55+mph if I give the car decent amount of throttle to increase speed, the a/c vents start cycling - few seconds on defrost, few seconds on feet, then eventually returns to normal vents. Also I have issues where from time to time it will throw a code for open injector circuit. They may or may not be related, I haven't figured it out yet. But it's annoying! the van goes into a limp mode and i have to reset it before it will drive normally. more recently it actually went into a fit with some backfiring (little pops). I had to nurse it to the side of the road and feather the throttle gently to get power back. its all so intermittent though! I wonder if i just have to wait for it to get worse 😭
I have a P0442 small evap leak on my H3. I took it to Firestone repair shop and they did the smog test to the system. They said they couldn't found any leaks in the system. NOW, I notice gas smell right behind the driver rear under the fender. Can that be the small leak that the code is giving???? Forgot to mention, is on the same place side were I add gas to the H3. I replace the gas cap for a new OEM gas cap. And still give me the code. Help!!
P0457 pt cruiser 2005 non turbo .. gas fills fine. New gas cap oME , smoke test showed nothing , purge solenoid replaced leak detector pump... Still have P0457 I'm in NY it won't pass inspection soon help! Some people are telling me there is a filter before the leak detector pump... I'm basically throwing parts at it saying are you fixed yet?? Help!
Hey Kathy! The P0457 indicates your EVAP system detected a small leak and it thinks its the fuel cap. Have you inspected the purge solenoid? See if the solenoid isn't sealing after it allows vacuum into the fuel tank then you can also get this code. Please let me know if you have further questions.
@@MasterAutomotiveTraining all parts replaced after smoke test showed nothing. Purge solioid, leak pump detector and OEM gas cap so what else you got! ?
@@MasterAutomotiveTraining I figured it out. Just had to watch lots of videos till it sank in. I diagnose the faulty fuel tank pressure sensor today on that car and now it's good.
Your video on HOW DO YOU TEST AN ENGINE VACUUM was amazing, this video shows nothing. You seem like a smart and articulate technician, hope this video can be restructured. Again, thanks for your efforts. God Bless
If it’s powered solely by CNG no EVAP test will be required. California Smog check Manual section 1.4.6. States: • Vehicles powered exclusively by diesel, compressed natural gas (CNG), liquefied natural gas (LNG), or liquefied petroleum gas (LPG); are excluded from having an EVAP test performed
