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Author Topic: Rough start then perfect.  (Read 1858 times)

Paul99

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  • United Kingdom, England, Hampshire UK
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  • 230 SL White. 1966.
Rough start then perfect.
« on: September 17, 2023, 20:16:54 »
When starting hot or cold it starts well then after about 20 secs starts to run rough.... like it's running on 4 or 5 clys. After another 20 secs or so runs perfectly.

New plugs. 123 ignition. 

Guess it's fuel either too much or not enough
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ja17

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  • USA, OH, Blacklick
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Re: Rough start then perfect.
« Reply #1 on: September 18, 2023, 01:24:27 »
Do a split linkage test when it is running rough. It should tell you something.
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Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

stickandrudderman

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  • United Kingdom, England, Richmond
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    • http://www.colinferns.com
Re: Rough start then perfect.
« Reply #2 on: September 18, 2023, 09:51:51 »
Time to test your injectors.
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