mercedes benze 190E 1991 model
 

Hi

My car has developed a problem over the last 3 years Can anyone help?

Make mercedes 190E 1991 model Mileage 89.000

The pattern

• Over the 3 years it has gradually lost power unnoticed and is getting worse

• I have replaced the fuel head and rubber gaiter and there is no positive improvement

· Three different Mercedes garages have investigated with no positive answer to the problem.
I love this car can anyone out there help? Asp

The car runs well on normal roads, the problem starts when I climb hills and not very steep hills. It then looses speed and power dramatically.
According to mechanic and quote “not enough petrol is delivered through the fuel head due the piston not operating properly”

Siorapwil

:confused:

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thread moved

May be a plugged catalytic convert or pre-cats. Try loosening up the front exhaust pipe (JUST to test it, don't leave it this way, it will be very loud and you can get CO into the cabin, so leave your windows down when doing this test) and road test to see if performance returns. 2.3's are known for plugging the pre-cats especially, and this CAN lead to serious engine damage if left indefinitely.
In regards to the fuel system situation has anyone checked the fuel ratio either by on-off ratio or with an exhaust gas analyzer to see if you are running too lean?
Gilly

Oh, PS if it was a problem with ONE piston in the fuel distributor, you would have a miss on one cylinder, would run rough due to one cylinder not getting enough fuel. If it runs smoothly, just a general lack of power, I would discount the diagnosis of a problem with one piston in the distributor.
Gilly

What is a rubber gaiter?

I think he means the part under the distributor/air horn assembly where it connects to the intake manifoild proper.
Gilly

190E problem
 

Hi Gilly

Sorry for being so long in answering you letter. Thank you very much for this helpful information, I will follow this up asap, thanks again

Siorapwil

Hi
I have replaced the fuel head and rubber gaiter and there is no positive improvement

Answer to
What is a rubber gaiter?
__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

the rubber gaiter is under the fuel head an petrol passes through to the pistons.

Hi
The problem has been found and solved by a Fred Smalley.

It was a worn camshaft. the car is now brilliant apart from my (new post problem)
Thanks to all who took part in solving my problem.

Siorapwil