The usual morning start takes only one click and the engine starts purring like a kitten.

These days I am getting very hard startings everytime usually twice before it gets fired-up.

Members with any ideas please advise.

Appreciate it and Thanks.

Year, engine, and mileage??

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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)

Good Day David,

Year of Model W-140 (300SEL'92) and Mileage about 190,000KM
or 119,000 Miles done.

I remember having the butterfly valve at the airintake being clean-up due to dirt accumulating and after that onetime all is well but now experiencing hard starting over again.

Hope you can help out! Thanks.

I have a 93 400SEL, it had been starting fine, just today started starting hard, actually wouldnt even start, until I pressed the gas pedal down a little and held it. It was really hot today, and later in the afternoon it seemed better.
Maybe plugs/wires? Is there an adjustment on the throttle linkage?

Hi SClass4Ever!

Seems to me you have the same problem that I have someweeks back. Try cleaning up the butterfly valve in the air-intake!
I have been told by my BenzMec that it could be throttle problem.
Well sending in for a checkup tomorrrow morning and maybe will advise you outcome by end of the day.
Look forward to members in trouble shooting and advise. Thanks and regards.

Ill give it a try. What did you use, spray carb cleaner? Ive worked on cars since I was a teenager, but Im new to these German cars. They sure are different to work on than American and Japanese cars. Ill try cleaning that valve and a nice new set of bosch platinum plugs and some new NAPA Belden wires and see if that clears things up..

Guys,
Other than the hard starting trouble, are any of you experiencing problems with the instr. cluster having electrical problems? I currently own a 86 300E, but I thinking of purchasing a 92/93 W140 in the near future.

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Richie
1986 300E

Yes Rich!

The instrument cluster gets short circuit every time an electrical connection is made. Like turning on the wipers sets the instrument panel up like a chrismas tree.
But apart from that you learn to live with it. Car runs and purrs like a kitten most of the time. Good Luck!

Rich, Im not having any problems with my instrument cluster, 93 400SEL with 139,000 miles on it.
But Im definitely having some hard start when HOT conditions lately in our hot Minnesota days here recently. Anyone got any ideas?

Chris,
What price have you been quoted in order to fix this problem?(If you went looking for a quote).

__________________
Richie
1986 300E