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Old 06-20-2012, 02:37 AM
Registered User
Join Date: Jul 2003
Location: BC, Canada
Posts: 106
Fuel Pressure Test kit

I want to do a fuel pressure test on my two MB's.

Car 1) 1989 300E (M103) with Bosch KE- Jetronic
Car 2) 1999 C230K (M111) with Bosch ME Motronic ??

For the M103, as I understand the basic test - you disconnect the fuel inlet line from the distributor and install a short nipple that has a fitting for the pressure gauge line. On the M111, I understand there is a Shrader valve on the fuel rail which is the tap to measure fuel pressure.

Problem is that I can't find an economical kit to do either car. I can find base kits for $60 or less (designed for Ford and GM systems) but then I can't find the fittings that work with the fuel systems for Mercedes. Cheap kits use hose clamps on fuel lines whereas the expensive kits appear to have many fittings but these kits are $250 to $350. Surely there is a fuel pressure test kit under $100 that can properly and safely measure fuel system pressures of these two cars. The device seems elementary to me - fittings, fuel line, and gauge.

I could't find a rental unit either.

Can anyone suggest a kit or another process to acquire fuel pressures? Can I get a kit that will work with both cars? Anyone have a used kit for sale?

I appreciate any direction so I can economically assess the fuel system.


1989 300E
1999 C230 Kompressor
2005 Toyota Highlander AWD

Also owned:
1964 Chevrolet Impala (first car)
1972 Fiat 124 Sport Spider (first sports car)
1976 VW Scirocco (first new car)
1970 Pontiac Parisienne (epitome of bland)
1980 VW Scirocco (last new car)
1953 GMC 6x6 (amazingly well engineered)
1967 Austin Healey 3000
1987 F150 4x4
1978 F150
1987 VW Jetta
1992 Toyota Previa AWD
2003 Toyota Sienna
2001 Nissan Pathfinder 4WD
1949 John Deere Model M
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Old 06-22-2012, 10:22 PM
Registered User
Join Date: Jun 2011
Location: Tottridge,London
Posts: 193
Smile FP test kit

i got mine from Harbor Tools . good price and quality .This was for a CIS
system. JCwhitney also carries them.


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