S-Class (W126) 1979-1991: 300 SE, 300 SEL, 380 SE, 380 SEL, 420 SEL, 500 SEL, 560 SEL, 360 SEC, 500 SEC, 580 SEC, 300 SD TURBODIESEL, 300 SDL TURBO, 350 SD TURBO, 350 SDL TURBO

1985 380se hard start help!!

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Old 03-10-2010, 10:52 PM
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mercedes 1985 380 se
1985 380se hard start help!!

I have a 1985 380 Se, 200000 miles. It use to start fine when cold, but terribly hard to start when hot. Just spent 900.00 at a local shop to fix the hard start problem, now very hard to start when cold and hot.

They replaced the warm up regulator and fuel pump check valve, and it did not change my problem, actually made it worse.

Can anyone help with what is wrong and what needs to be replaced.

thanks
Old 03-23-2010, 10:32 AM
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1985 380SE
Mine has been doing the same thing for some time now. I will advise if we finally get the correct fix.
Old 03-23-2010, 11:52 AM
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Cruiser,

Thanks for your help!! Please let me know what you find out!!
Old 03-23-2010, 11:57 PM
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85 500 SEL
I would replace the ignition coil. If it is old the electrical properties break down , usually hard hot start first. Then gets worse. For the $60 or so on line it is worth the risk of being something else.
Old 03-24-2010, 09:41 AM
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thanks dave I will try that. I really appreciate you taking the time to post to my problem.

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