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Old 05-10-2008, 08:24 AM
simmo1961's Avatar
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Join Date: Apr 2008
Posts: 8
Wink 1989 230e 2.3 hard to start hot or cold

hello i having a few problems with my 230e first its hard to start hot or cold the engine winds over and over and then will fire up then stall try again it will start runs rough like it was flooded then it run ok when you drive it once you turn it off and wait 5 or 10 mins same thing would the
ovp be causing this i have replaced the following
fuel injectors
spark plugs
fuel filter
air cleaner
fuel pressure reg
the fuel looks not that old looks new
fuel check valve
does any one have i deals please before i set fire to it

after tring to fix this veicle for 2 months now i spoke to an old mercedesbenz mechanic from the seventys and he told me what caused this problem and how to fix it

he said the problem was that the sencer plate was bent or out of shape and is caused by a back fire in the intake it is easy to check just take off air cleaner lid
and have a look at the cross bar covering the sencer plate take it off and check it if it is bent if so try to straighten it up (vise)
now havea look at the sencer plate to see if the plate is coming all the way back if not loosern the 10 mil bolt on top and adjust the plate so it comes back with out binding in the housing once you have done that tighten 10 mil bolt refit crossbar start and check he also said to and mixture start and have the engine warm to hot maybe 10 min s remove round cap (diaignos) and
check voltage with amultimeter the voltage should should be between 6.9 to 7.2 once you done fixed maybe mine is runs really good and start s real easy now

Last edited by simmo1961; 05-12-2008 at 08:01 AM. Reason: update ive fixed starting problem
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Old 05-10-2008, 07:10 PM
yal's Avatar
yal yal is offline
Join Date: Oct 1999
Location: New York, Long Island
Posts: 2,706
Spark plug wires?
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Old 05-11-2008, 11:51 AM
slk230red's Avatar
WECO Installer
Join Date: Jul 2006
Location: Tampa, FL
Posts: 819
Did you replace the OVP relay?

If not, did you check the fuse and/or bench test the OVP relay?


1993 190E 2.3
2001 SLK230
1971 LS5 (454) Corvette Convertible
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