how to replace fuel pressure regulator on mercedes m104 &119 engines 

it's absolutely the same for the m111 engine of my '94 C200 w202 you can add it in the title of the video, the difference between before/after this little change is unbelievable!!

Brother! i owe you a six pack of beer for this one 🍺🍺🍺🍺🍺🍺 I have had this rough start issue for months. Mine was weird. It would start great after about 5 hours. Or after a quick run. But if it sat for about 40 minutes to an hour, it would barely start and rough idle. I was about to buy MAF, Fuel Pump, Fuel Filter and just start throwing money at it until i found this. I found that Bosch FPR on RockAuto for $30 and bam! All good. The pliers with the ring was hard for me to get off but aside of that it all went smooth thanks to you. Much appreciated for this video. Saved me a ton of money and headaches

I have a 98 mercedes Benz c230 it's a 4 banger non supercharged, with 250k miles on it knowing even though a previous mechanic had it. I had to change alot of parts to it especially the fuel system I'm about to do this and I bet through it's whole life THAT hasn't been changed at or looked at, thank you for this another awesome information that something so little can cause such horrendous problems thanks again mercedes source helps alot on older models mecerdes.

Thank you for posting this valuable video on RU-vid.

Thank you! Mine is leaking too. Just checked it after your video... going to order the new one

You're awesome Bro! Thx! Keep up the good work!

Really good vid. Thank you.

Great job. Thank you !

Thanks a lot. I will do this!

You just save me almost $200.00. I couldn't even remember having made that exact repair over 30 years ago. LOL

Going to give thisw a try. We've had this issue for FIVE YEARS now!

Very nice vedio, I just replaced a new one on my W124. The engine start become easy. Many thanks for your vedio.

This solved my issues. thanks!

It worked! You were right, mine was dripping when i pulled the hose off. Used bbq tong tips bcuz didn't have nose pliers. Your vid was great intel and diagnostic clues were spot on! 99 w140 m104 . Next project soft close doors!

Excellent! I just recently did an engine overhaul and now facing cold starting difficulties and believe the issue is that fuel pressure regulator since I already replaced the pump and the filter.

Outstanding.

Thanks! Man!

Have you ever changed the fuel injectors on your E320 ? Your videos are very helpful! About to tackle my injectors on my 95 Sl 320.

Thanks man!

This is a good video. Today I followed it on my e320 1994. I succeeded, but almost had a big problem. I was working on a warm engine (an hour after being driven) on a fairly warm day. Before removing the regulator, I unscrewed the brass cap and depressed the Shrader valve with a screw driver. I got a hiss and then some gas dribbled out. I let it dribble for about ten records and then replaced the cap. Next I disconnected the rubber hose and pulled out the C-clamp. I wiggled the valve with my left hand. It popped out followed by pressurized burst of gasoline that sprayed my face, jacket, etc. Luckily the glasses protected my eyes. I washed my face and finished the job. Getting the c-clamp seated again took quite a few tries. Question - why was I sprayed with about a pint of gas? I’m assuming that after I closed the Shrader valve, the internal fuel pressure started to climb again because of the warm engine. Is that right? If so, is this avoided by working only on a cold engine ?

Hey man, thanks for the video! Would the fpr also cause a rough idle that vibrates the car?

Nice video ...also did the engine run rough and sputter at idle?

Thank you! I just checked mine on my 95 E320 and it is leaking through. Going to change is ASAP

Nice video! Can it cause cold start issues as well? Mine struggles to start up in cold weather after sitting for a couple of days. When it eventually does it idles rough but when it warms up, everything is ok and restarts properly. Thanks!

Hi there, just want to know if the regulator can cause flooding when I try to crank it over, car is a 1996 W202 C280 with M104, I have spark (tested all 6 plugs) but when I crank the engine it won't start, cranks very fast and can smell fuel out exhaust, I pull the plugs and all are soaked in fuel, I clean them off and reinstall and try to crank and same thing happens again. All plugs coils and leads are new genuine parts, battery is brand new. Fuel pressure regulator is original MB factory part (25 years old) Don't want to keep throwing parts at it. Any help greatly appreciated.

Top Ferrero

Same problem here. Strong startup when starting the engine cold. Starting again when it's hot is very hard + strong gasoline smell from exhaust.

Top merci

im having the same issue after replacing both fuel pressure regulators in Mercedes SLR (M155) seems the new regulators are making this long cranking issue

thanks for video.i got same regulator bosch made in brasil.how about yours?

Eha adjustment to lean that’s why your getting the clicks. Still after fuel pressure regulator. Your still forcing in more fuel but your missing the fine tune adjustment.

I wish this is the problem of my Mercedes , i have replaced air filter and spark plugs but nothing changed . i ll check the regulators then. thanks

About to change my part ill let u know how it goes

My fpr hose smells gas, is my regulator bad?

Does this work for an e350?

Where's the part number ?