Mercedes High Exhaust Pressure But DPF Not Blocked??

Рет қаралды 24,420

Күн бұрын

Пікірлер: 66

@JoseSilveira-newhandleforYT 7 ай бұрын

Improperly serviced and unacceptable blunders from previous shops, along with, probably unneeded, parts canon... Good job getting it right, Jimmy!

@RogerM88 7 ай бұрын

Jimmy once again for the rescue. Many Dealerships wouldn't even touch that car, or would start replacing parts instead of diagnosing the problem.

@broqua4 Ай бұрын

Great job Jimmy. True helping hand. Just what to spread the news based on things I learned working on similar problem on my car. B28/8 (DPF differential pressure sensor) is part of DPF subsystem and will not "limp the car". At 4:18 we can see sensor called B60 (Exhaust Back Pressure Sensor) - it is part of the turbocharger subsystem and it shuts down the turbocharger - max allowed value is 1500hPa, and in idle revs should not go over 1100hPa - this sensor was defective for me and after replacement it solved the problem - it is easily accessible anybody can replace it bw. Back on the actual video the root cause might be due to whole Add Blue system looking strange ( 3:25 in video). Even it looks switched off it might have clogged, nitrate crystals can form if urea leaks.

@jamesward5721 7 ай бұрын

Mates a main dealer merc mechanic - he was telling me about how many people come in going "I want a quality German car, not some French muck so I picked Mercedes.." Yeah... you got it sussed, Pal..."

@-DC- 7 ай бұрын

GLB200 Built in Mexico with a Renault Engine, German as feck lol

@eoghanhennessy443 6 ай бұрын

We had a customer bring there car back after we told them

@hughmarcus1 6 ай бұрын

@@-DC-even worse are the ones who pay through the nose for their overpriced pickup, which is basically a Nissan with a Renault engine (a rubbish engine too). 😩

@paulcornock8287 Ай бұрын

When changing DPF sensors do you need to change the adaptions

@jamesward5721 Ай бұрын

@@paulcornock8287 I don't believe you do - but you're best to do a dpf clean & then tell the 'confuser you fitted a new dpf ( I.E fib) at the same time, to start with a "clean slate". Otherwise it will probably continue to sulk.

@ritchieschofield1185 7 ай бұрын

Have this problem on vw tdi engines. Low pressure egr blocks up with adblue causing back pressure and setting p2002. I reckon the low pressure egr is the cause. Great detective work. Think you're on point with that. Excellent video

@davesmith5914 7 ай бұрын

As always, thank you for taking the time to make your videos.

@ThePoacher19 7 ай бұрын

Hi jimmy I think the exhaust flap works with the back pressure between the dpf and catalyst so if there's a problem with the exhaust flap it could be stuck closed causing back pressure in the dpf and giving high readings ..just a thought 😊

@slvs91 6 ай бұрын

My car has a similar issue , and also has an exhaust flap middle of the exhaust pipe , i also got a bit of soot on tailpipe and soot G going up very quickly

@RideBikes_Walkplaces 7 ай бұрын

This video literally answered my question from the other day about what pressure the differential pressure shows. Nice one, buddy! Great video and diagnosis.

@renatairmarius123 7 ай бұрын

I have seen the same high presure after dpf on Rav 4 euro5 engine. Back box was causing 44 mbar presure after second cat, 90 mbar presure in front of dpf. I think back box was block some way. After hard drive by owner on motorway dpf light go away so didn't got a chance to remove back box an see way it's causing mbar presuure. Thanks for video.

@malcolm6951 7 ай бұрын

Surprised it also doesn't have scorch marks from the 'parts' cannon being fired at is so often!!

@nigelcarter7740 Ай бұрын

Glad I was sensible 8 yrs ago & bought a E-Class 350 v6 convertible with one of the best engines Merc built, cooler Gaskets that’s all it’s needed and oils changed every 3k will sell it in the new year though 😢

@peterbarnett4082 9 күн бұрын

Top man, sure know your stuff 👌 love your videos 👍

@ORileysAutos 9 күн бұрын

Thanks 👍

@neildean7515 7 ай бұрын

Interesting video this jimmy and please let us know outcome. What was the age and milage on this BMW. Is it possible these DPFs are getting more restrictive in their designs to catch more pollution (therefore having higher values (and does Manufacturer data not give normal operating values!!! )These DPF issues are just putting people off buying diesel cars.. Maybe thats the idea

@paulnolan1352 7 ай бұрын

Cheers jimmy. So they’ve had a go at it and given the guy his Car back with all the Air system loose and badly refitted and not fixed either. Par for the course these days.

@tomsurrey2252 6 ай бұрын

Good one, as per usual!!!

@ORileysAutos 6 ай бұрын

Thanks again!

@lifeRobrandom 6 ай бұрын

As far as I'm aware these are fitted with a back pressure flap that does keep some pressure in the exhaust system however the soot does indicate the DPF is damaged

@Phantom0309 7 ай бұрын

What does the DPF cleaner do the SCR catalysts?

@diesel-technology5507 15 сағат бұрын

Did you ever find the source of the problem with the back pressure? I suspect it had a dpf and AdBlue delete, and the soot then decided to all accumulate in the scr

@royritchie4184 6 ай бұрын

Most newer mercedes have a exhaust damper shutoff flap near backbox so pressure is probably normal.

@SanuMotorswithCharlie 6 ай бұрын

Hi, I have a same problem too. Basically I upload one video months ago. Someone drilled couple of drill hole in a DPF because of the high Dpf Fisher but Dpf not blocked what I found there is a faulty mass airflow sensor because of that they change EGR maker two holes in Dpf and came to me I couldn’t find any problem with Dpf or other related. I’ll check any boost leaking even I can’t find any boost leaking. Finally I found faulty mass airflow sensor basically you someone remove that horse and leave it as it is, could be the problem, other thing we can’t find any faulty code for airflow sensor. And also, if sensor problem is effected to the gear shifting Good luck mate

@jrh86 2 ай бұрын

Proper pro 💯💯💯👍

@mikeday8999 7 ай бұрын

Hi jimmy. My exhaust pressure before dpf is 1220hPa on the live data. With exhaust back pressure 275hPa . Would this indicate a severe blocked dpf. I e already ordered the launch dpf cleaner to spray thought the front side of the dpf. ?

@ORileysAutos 7 ай бұрын

Is it a Ford?

@mikeday8999 7 ай бұрын

@@ORileysAutos it's a bmw 3 series. Live data shows soot level at 79%

@shaunblakemore7150 7 ай бұрын

Good job 👍

@RideBikes_Walkplaces 7 ай бұрын

With the launch, how does the connection to the Internet work?

@ORileysAutos 7 ай бұрын

Hotspot off my phone

@simonsherwood7169 7 ай бұрын

Be nice to know if that high pressure was normal on that ,bit of a unicorn car with that engine in

@krzysm5 6 ай бұрын

Jimmy, I have 14 530d my exhaust-gas pressure before dpf sits at 500 hpa no movement with rpm at all. Thanks

@jimmyk2001 6 ай бұрын

Theres a lot of soot at the tailpipe, something has clearly caused it to dump all that unburnt fuel out of the exhaust, dont think this is the last we will see of this

@slvs91 6 ай бұрын

What can cause soot on the tailpipe? I have a 2016 clio 1.5 dci no adblue with tailpipe clean, and then i have a megane 2020 1.5 dci with adblue and has soot on tailpipe and it also regenerates quite often ,about every 150 miles , injectors been checked and they all good , egr been cleaned too

@tayfurkirici7832 6 ай бұрын

Jimmy I need your help with my glc

@simonmiddleton4977 7 ай бұрын

Nice techie video 👍😃

@wackey3455 6 ай бұрын

hi jimmy just texting a long message and i clicked into a different video now i lost my text so i keep it quick i have vacuum gun the same as yours mine is stuck on vacuum the knob is stuck i cant twist it any ideas how to fix it, Done some googling not much help im afraid, Another very good video i would say he a happy camper drive in away

@AhkKk-wc4tl 3 ай бұрын

Probably fitted with a throttle flap on the exhaust

@PassioneParametri 7 ай бұрын

Ciao Jimmy potrebbe avere la farfalla bloccata di scarico dopo il pdf?

@rachidslimani5601 7 ай бұрын

Good job jimmy many dealerships wouldn’t even try to touch that car , i changed the DPF and i still have the fault code P246309 !! Any advice please ??🙏

@davidoff59 7 ай бұрын

Another Jimmy video with that exact code kzbin.info/www/bejne/mKPLe2mkhtSKg9U

@rachidslimani5601 7 ай бұрын

Thank you so much 🙏 i guess thqt was the problem from the beginning not the DPF because i had change it 5 days ago and still the same .. we don’t have good mechanics in france 🇫🇷, it’s already cost me a lot for this DPF , thanks again 🙏

@neiltitmus9744 6 ай бұрын

Those hands and that leather lol

@jrh86 Ай бұрын

The Garage I used spent 16 hours on my car to diagnose a DPF Sensor fault and to clean my DPF filter...still the same eml on, really disappointed with the level of so called expertise.

@alouisschafer7212 7 ай бұрын

Once again previous shops messed about with parts cannon repairs without actual diagnosis... Some garages are just shocking cant even diagnose it. Its 2024 the car literally tells you whats wrong with it.