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Fuel Metering head kits?
Topic Started: Sun Oct 5, 2014 12:45 am (2,052 Views)
coomo
Newbie
[ * ]
Hi Guys, have been lurking here a while.Its been a valuable source of info working through issues on my 2.5 16 valve.Ive the common problem of a worn fuel metering head .I was told by Merc specialist rebuild kits were available for these.Does anyone have any ideas where These can be sourced? Thanks.
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JustbeCoz
Part of things
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When you say worn, which parts do you think are worn and what are the symptoms? I have seen a post on here about the kit but cannot recall who posted. A bosch specialist / service centre should be able to help you though .http://www.cis-jetronic.com%2Fpublic_doc%2F07.3-0997-06.pdf

Keep us posted.
Edited by JustbeCoz, Sun Oct 5, 2014 8:22 am.
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coomo
Newbie
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JustbeCoz
Sun Oct 5, 2014 8:18 am
When you say worn, which parts do you think are worn and what are the symptoms? I have seen a post on here about the kit but cannot recall who posted. A bosch specialist / service centre should be able to help you though .http://www.cis-jetronic.com%2Fpublic_doc%2F07.3-0997-06.pdf

Keep us posted.
Hi Apparently the diaphram is not in good condition.Tickover is a tad lumpy,and not what it should be.The merc specialist, told me its very worn.
Edited by coomo, Sun Oct 5, 2014 4:37 pm.
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JustbeCoz
Part of things
[ *  * ]
Being a fellow 2.5-16 owner I am always interested to hear of others experience. I don't know of any diagnostic that would tell you the diaphragm was worn. I could understand if it was holed and fuel delivery would be crap or nonexistent. From my own experience of the car I would say there are any number of other things that would be checked or tackled first before going for the fuel dizzy.

In no particular order......

Plugs correct non resistive
HT Leads
Dizzy Cap and Rotor
Fuel Filter
Idle Control Valve
EHA leaks
Airflow Potentiometer
AFM plate centred properly and free movement
Throttle open/closed switch
Idle microswitch
OVP plus socket and wiring
Fuel Pump Relay + etc
Temperature sensor block and airfilter
Valve timing correct.
Injectors not weeping
AFM rubber boot and idle air hoses
Cold start valve working properly

I've probably missed some but unless these have all been checked I would avoid the Fuel Distributor.
Is it a well known specialist you spoke too and did he have the car in for diagnosis ?

I've had my car 8 years and only just worked through the above to where I think it's running ok. A long running issue with cold start and stalling was the most elusive being caused by the rubber boot below the AFM being perished and split which caused a lean misfire and stumbling idle. Several owners over the years had apparently tried to counter this with mixture adjustment which was way out when the boot was replaced.
Best of luck and keep us informed. These are great cars when running right.
These people repair KE http://www.atpelectronics.co.uk/p/mercedes-190e-fuel-injection-ecu-ke-31-jetronic-4.html
Edited by JustbeCoz, Sun Oct 5, 2014 6:34 pm.
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coomo
Newbie
[ * ]
JustbeCoz
Sun Oct 5, 2014 6:27 pm
Being a fellow 2.5-16 owner I am always interested to hear of others experience. I don't know of any diagnostic that would tell you the diaphragm was worn. I could understand if it was holed and fuel delivery would be crap or nonexistent. From my own experience of the car I would say there are any number of other things that would be checked or tackled first before going for the fuel dizzy.

In no particular order......

Plugs correct non resistive
HT Leads
Dizzy Cap and Rotor
Fuel Filter
Idle Control Valve
EHA leaks
Airflow Potentiometer
AFM plate centred properly and free movement
Throttle open/closed switch
Idle microswitch
OVP plus socket and wiring
Fuel Pump Relay + etc
Temperature sensor block and airfilter
Valve timing correct.
Injectors not weeping
AFM rubber boot and idle air hoses
Cold start valve working properly

I've probably missed some but unless these have all been checked I would avoid the Fuel Distributor.
Is it a well known specialist you spoke too and did he have the car in for diagnosis ?

I've had my car 8 years and only just worked through the above to where I think it's running ok. A long running issue with cold start and stalling was the most elusive being caused by the rubber boot below the AFM being perished and split which caused a lean misfire and stumbling idle. Several owners over the years had apparently tried to counter this with mixture adjustment which was way out when the boot was replaced.
Best of luck and keep us informed. These are great cars when running right.
These people repair KE http://www.atpelectronics.co.uk/p/mercedes-190e-fuel-injection-ecu-ke-31-jetronic-4.html
Hi The merc guys had it in to fix a cold start issue which they did.He mentioned that the Fuel dizzy was very worn.Have known these guys many years, they are top notch.
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coomo
Newbie
[ * ]
coomo
Sun Oct 5, 2014 8:00 pm
JustbeCoz
Sun Oct 5, 2014 6:27 pm
Being a fellow 2.5-16 owner I am always interested to hear of others experience. I don't know of any diagnostic that would tell you the diaphragm was worn. I could understand if it was holed and fuel delivery would be crap or nonexistent. From my own experience of the car I would say there are any number of other things that would be checked or tackled first before going for the fuel dizzy.

In no particular order......

Plugs correct non resistive
HT Leads
Dizzy Cap and Rotor
Fuel Filter
Idle Control Valve
EHA leaks
Airflow Potentiometer
AFM plate centred properly and free movement
Throttle open/closed switch
Idle microswitch
OVP plus socket and wiring
Fuel Pump Relay + etc
Temperature sensor block and airfilter
Valve timing correct.
Injectors not weeping
AFM rubber boot and idle air hoses
Cold start valve working properly

I've probably missed some but unless these have all been checked I would avoid the Fuel Distributor.
Is it a well known specialist you spoke too and did he have the car in for diagnosis ?

I've had my car 8 years and only just worked through the above to where I think it's running ok. A long running issue with cold start and stalling was the most elusive being caused by the rubber boot below the AFM being perished and split which caused a lean misfire and stumbling idle. Several owners over the years had apparently tried to counter this with mixture adjustment which was way out when the boot was replaced.
Best of luck and keep us informed. These are great cars when running right.
These people repair KE http://www.atpelectronics.co.uk/p/mercedes-190e-fuel-injection-ecu-ke-31-jetronic-4.html
Hi The merc guys had it in to fix a cold start issue which they did.He mentioned that the Fuel dizzy was very worn.Have known these guys many years, they are top notch.
Hi the merc, guys fixed a cold start problem for me.They told me the fuel dizzy was very worn.Ive known them years, they are top notch.
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jeremy
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Too Far Gone To Help
[ *  *  *  *  *  *  *  *  * ]
There are 2 other companies that I know of. Kmi in Letchworth is one and there is a guy in Exeter

Jeremy
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Chris Martens
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Part of things
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This http://www.ebay.co.uk/itm/291253709166 is a repair kit for the fuel metering head, they ship from UK as well.

regards,
Christian
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JustbeCoz
Part of things
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Alternative US ebayer here with some good detail photos of where the o-rings go

http://www.ebay.com/itm/Repair-Kit-for-4-CYL-Alloy-Bosch-Fuel-Distributor-for-Mercedes-Audi-VW-/171482662643?vxp=mtr#ht_6895wt_1238

also rebuild guide if not already posted http://www.cis-jetronic.com/public_doc/07.3-0997-06.pdf
Edited by JustbeCoz, Mon Oct 6, 2014 9:40 pm.
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coomo
Newbie
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JustbeCoz
Mon Oct 6, 2014 9:31 pm
Thanks Guys.Cost of rebuilt unit is £375 plus vat via the specialists.Not sure, if these rebuild kits will fit mine though? My part no. is 0438 101 037.Which is a 2.5 these listings seem to be for 2.3 models?
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coomo
Newbie
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coomo
Tue Oct 7, 2014 5:49 pm
JustbeCoz
Mon Oct 6, 2014 9:31 pm
Thanks Guys.Cost of rebuilt unit is £375 plus vat via the specialists.Not sure, if these rebuild kits will fit mine though? My part no. is 0438 101 037.Which is a 2.5 these listings seem to be for 2.3 models?
Ah ! there seem to have one.Ive mailed them to check.Will update when completed!
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coomo
Newbie
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coomo
Tue Oct 7, 2014 5:54 pm
coomo
Tue Oct 7, 2014 5:49 pm
JustbeCoz
Mon Oct 6, 2014 9:31 pm
Thanks Guys.Cost of rebuilt unit is £375 plus vat via the specialists.Not sure, if these rebuild kits will fit mine though? My part no. is 0438 101 037.Which is a 2.5 these listings seem to be for 2.3 models?
Ah ! there seem to have one.Ive mailed them to check.Will update when completed!
Hi guys.Sorry for late response.Have been waiting for parts and fitment.Anyway, I got my fuel metering head back from ATP.Wow, they even repaint it.Not just clean it.Fitted it, and engine settled down to a perfect ticover.Just as my Merc specialist said.After 100k these cars need a new unit.Now its like a new car.No uneven tickover, and lightening throttle repsonse.Best £420 Ive ever spent!
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optimusprime
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Thats good but you could buy 4 for that . But if you have the cash ,then its the right way to go.
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