280e fuel pressure problems
- 1973_280E
- A Class
- Posts: 13
- Joined: Wed 27 Jul, 2005 3:57 pm
- Model you own: w114
- Location: Brisbane, QLD
280e fuel pressure problems
I'm at the tail end of a full engine reconditioning process for my w114 280E M110. Going through the engine testing phase we have found the fuel to be a bit lean. The 280E has 2 fuel regulators from what I can gather (one for in flow and one for out flow), making it difficult to tune the fuel pressure correctly.
I find that all the manuals available to me go out of their way to avoid the 280E fuel and injection system... so annoying!
Has anyone else had a similar experience in adjusting fuel pressure on this engine model? Anyone have some data on seting the pressure between the two regulators?
I find that all the manuals available to me go out of their way to avoid the 280E fuel and injection system... so annoying!
Has anyone else had a similar experience in adjusting fuel pressure on this engine model? Anyone have some data on seting the pressure between the two regulators?
- OzBenzHead
- 300 SLR
- Posts: 2140
- Joined: Mon 22 Aug, 2005 9:11 am
- Model you own: w126
- Region: New South Wales
- Location: NSW Central West
G'day, 280E :)
Might be worth trawling through this manual: http://handbook.w116.org/.
Sure, it's for the W116 mostly, but it covers the M110 with both D-Jetronic and K-Jetronic systems.
Good luck.
Might be worth trawling through this manual: http://handbook.w116.org/.
Sure, it's for the W116 mostly, but it covers the M110 with both D-Jetronic and K-Jetronic systems.
Good luck.
OzBenzHead
Currently:
1983 C126 500 SEC – Bruno
2003 BA Falcon ute 4.0L Barra 182 – Henry
Formerly:
1955 W180 220a – Ponty
1964 W112 300 SE/C – Béla
1965 W111 220 S – Hektor the Heckflosse
1970 W108 280 SE – my first Benz – Karl
1973 W116 280 SE Crayford Estate – der Rolfwagen
1975 W116 450 SE – Goldy Horn a.k.a. Thirsty Merc
1980 W116 280 SE – Boris
1989 W124 300 E – Hester
1992 W201 180 E – Babe I
1992 W201 190 E 2.0 – Babe II
+ numerous W108/116 rolling spares
Prior to my M-B epiphany:
53 cars including many British oil-leakers (e.g. 14 P4 / P5 Rovers!), frequently cursed by Lucas the Prince of Darkness. Learnt to drive grey Fergie tractor and '27 Nash paddock-basher ute aged 8. First car owned (age 13): 1953 Fiat 500.
Currently:
1983 C126 500 SEC – Bruno
2003 BA Falcon ute 4.0L Barra 182 – Henry
Formerly:
1955 W180 220a – Ponty
1964 W112 300 SE/C – Béla
1965 W111 220 S – Hektor the Heckflosse
1970 W108 280 SE – my first Benz – Karl
1973 W116 280 SE Crayford Estate – der Rolfwagen
1975 W116 450 SE – Goldy Horn a.k.a. Thirsty Merc
1980 W116 280 SE – Boris
1989 W124 300 E – Hester
1992 W201 180 E – Babe I
1992 W201 190 E 2.0 – Babe II
+ numerous W108/116 rolling spares
Prior to my M-B epiphany:
53 cars including many British oil-leakers (e.g. 14 P4 / P5 Rovers!), frequently cursed by Lucas the Prince of Darkness. Learnt to drive grey Fergie tractor and '27 Nash paddock-basher ute aged 8. First car owned (age 13): 1953 Fiat 500.
- Nutz
- E Class
- Posts: 74
- Joined: Fri 30 Dec, 2005 8:44 pm
- Model you own: w116
- Location: Hawaii [ Maui ]
Re: 280e fuel pressure problems
Set it at 30 psi ( 2 bar) 8) The regulator is adjustable from 28 psi to 32 psi and if you can't achieve this,replace. Good luck1973_280E wrote:I'm at the tail end of a full engine reconditioning process for my w114 280E M110. Going through the engine testing phase we have found the fuel to be a bit lean. The 280E has 2 fuel regulators from what I can gather (one for in flow and one for out flow), making it difficult to tune the fuel pressure correctly.
I find that all the manuals available to me go out of their way to avoid the 280E fuel and injection system... so annoying!
Has anyone else had a similar experience in adjusting fuel pressure on this engine model? Anyone have some data on seting the pressure between the two regulators?
Last edited by Nutz on Sat 31 Dec, 2005 6:56 am, edited 1 time in total.
- OzBenzHead
- 300 SLR
- Posts: 2140
- Joined: Mon 22 Aug, 2005 9:11 am
- Model you own: w126
- Region: New South Wales
- Location: NSW Central West
G'day, Nutz! :)
Good to "see" you over here! Long way from Alaska! :lol:
Good to "see" you over here! Long way from Alaska! :lol:
OzBenzHead
Currently:
1983 C126 500 SEC – Bruno
2003 BA Falcon ute 4.0L Barra 182 – Henry
Formerly:
1955 W180 220a – Ponty
1964 W112 300 SE/C – Béla
1965 W111 220 S – Hektor the Heckflosse
1970 W108 280 SE – my first Benz – Karl
1973 W116 280 SE Crayford Estate – der Rolfwagen
1975 W116 450 SE – Goldy Horn a.k.a. Thirsty Merc
1980 W116 280 SE – Boris
1989 W124 300 E – Hester
1992 W201 180 E – Babe I
1992 W201 190 E 2.0 – Babe II
+ numerous W108/116 rolling spares
Prior to my M-B epiphany:
53 cars including many British oil-leakers (e.g. 14 P4 / P5 Rovers!), frequently cursed by Lucas the Prince of Darkness. Learnt to drive grey Fergie tractor and '27 Nash paddock-basher ute aged 8. First car owned (age 13): 1953 Fiat 500.
Currently:
1983 C126 500 SEC – Bruno
2003 BA Falcon ute 4.0L Barra 182 – Henry
Formerly:
1955 W180 220a – Ponty
1964 W112 300 SE/C – Béla
1965 W111 220 S – Hektor the Heckflosse
1970 W108 280 SE – my first Benz – Karl
1973 W116 280 SE Crayford Estate – der Rolfwagen
1975 W116 450 SE – Goldy Horn a.k.a. Thirsty Merc
1980 W116 280 SE – Boris
1989 W124 300 E – Hester
1992 W201 180 E – Babe I
1992 W201 190 E 2.0 – Babe II
+ numerous W108/116 rolling spares
Prior to my M-B epiphany:
53 cars including many British oil-leakers (e.g. 14 P4 / P5 Rovers!), frequently cursed by Lucas the Prince of Darkness. Learnt to drive grey Fergie tractor and '27 Nash paddock-basher ute aged 8. First car owned (age 13): 1953 Fiat 500.
- Nutz
- E Class
- Posts: 74
- Joined: Fri 30 Dec, 2005 8:44 pm
- Model you own: w116
- Location: Hawaii [ Maui ]
- ADow
- C 111
- Posts: 854
- Joined: Tue 21 Jun, 2005 4:25 pm
- Model you own: w108
- Location: Gilberton, Adelaide, SA
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Great collection - how do you keep them out of the weather?
Alastair
1971 280SE 3.5 - Don Ottavio - sold
1980 300D (formerly daughter's) - Heidi - sold
1999 C200 Elegance (currently daughter's)
1981 300D (son's) - Hektor (departed)
1998 Puma Clubman with 250 RWKW SR20DET - Percy
2011 VW Tiguan
2007 Jeep Cherokee
http://www.youtube.com/user/adow77
1971 280SE 3.5 - Don Ottavio - sold
1980 300D (formerly daughter's) - Heidi - sold
1999 C200 Elegance (currently daughter's)
1981 300D (son's) - Hektor (departed)
1998 Puma Clubman with 250 RWKW SR20DET - Percy
2011 VW Tiguan
2007 Jeep Cherokee
http://www.youtube.com/user/adow77
- Nutz
- E Class
- Posts: 74
- Joined: Fri 30 Dec, 2005 8:44 pm
- Model you own: w116
- Location: Hawaii [ Maui ]
- 1973_280E
- A Class
- Posts: 13
- Joined: Wed 27 Jul, 2005 3:57 pm
- Model you own: w114
- Location: Brisbane, QLD
Thanks for the tips guys. I'll have to take it in to my mechanic again as I don't have the appropriate tools for checking the pressure.
Further to my previous explanation on the symptoms, the fuel pressure seems fine on starup. It's only once the engine has warmed up that the idle gets 'bumpy' and it starts to die on me.
Nutz, I assume the regulator pressure you mentioned refers to the one leading into the engine. Any ideas on what the one coming out of the engine is for (on the fuel return line, lower in the engine bay)? And what the effects of adjustments to this are?
Further to my previous explanation on the symptoms, the fuel pressure seems fine on starup. It's only once the engine has warmed up that the idle gets 'bumpy' and it starts to die on me.
Nutz, I assume the regulator pressure you mentioned refers to the one leading into the engine. Any ideas on what the one coming out of the engine is for (on the fuel return line, lower in the engine bay)? And what the effects of adjustments to this are?
- Nutz
- E Class
- Posts: 74
- Joined: Fri 30 Dec, 2005 8:44 pm
- Model you own: w116
- Location: Hawaii [ Maui ]
1973_280E wrote:
Nutz, I assume the regulator pressure you mentioned refers to the one leading into the engine. Any ideas on what the one coming out of the engine is for (on the fuel return line, lower in the engine bay)? And what the effects of adjustments to this are?
Do you have a photo of the area on your M110? I haven't seen a D Jet setup on a M110 yet.Going by the setup on my M117's,the feed line goes to the first regulator then to the second one.I have no regulator on the return line,so I'm a bit confused :lol:
- 1973_280E
- A Class
- Posts: 13
- Joined: Wed 27 Jul, 2005 3:57 pm
- Model you own: w114
- Location: Brisbane, QLD
- 1973_280E
- A Class
- Posts: 13
- Joined: Wed 27 Jul, 2005 3:57 pm
- Model you own: w114
- Location: Brisbane, QLD
- O319-coach
- Mercedes Guru/Admin
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- 1973_280E
- A Class
- Posts: 13
- Joined: Wed 27 Jul, 2005 3:57 pm
- Model you own: w114
- Location: Brisbane, QLD
- O319-coach
- Mercedes Guru/Admin
- Posts: 456
- Joined: Mon 20 Jun, 2005 5:29 pm
- Model you own: w124
- Region: New South Wales
- Location: Canberra
- Contact: