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Author Topic: Backfiring  (Read 3482 times)

n/a

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Backfiring
« on: November 12, 2005, 19:29:35 »
Hi Guys - new to this site and wanted to know if any of you can help. My 1968 280SL backfires a lot, even when warmed up. Do any of you have the same problem? The garage says that I need an engine rebuild???? Does he really mean that? Thanks
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Dick M

  • Guest
Re: Backfiring
« Reply #1 on: November 13, 2005, 00:34:30 »
That seems to be a big jump from engine backfires to needs engine rebuild... What else did garage say about the engine condition?
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hands_aus

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  • Australia, Queensland, Brisbane
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Re: Backfiring
« Reply #2 on: November 16, 2005, 18:20:58 »
Hey Fah1978,
Back firing often means that the car is running too lean. This usually can be adjusted.

Use the Search function on here and look for 'backfire'. This has been discussed many times.

I would not be rushing into a rebuild until I had really done my home work.

Bob Smith (Brisbane,Australia)
RHD,1967 early 250 SL, auto
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Bob Smith (Brisbane,Australia)
RHD,1967 early 250 SL #114, auto, ps , 717,717
best of the best

A Dalton

  • Guest
Re: Backfiring
« Reply #3 on: November 16, 2005, 18:33:37 »
Could be dozens of different things, but I would start with a compression test before anything...just so you know what you are working with.
 And Read the plugs while you are out [ and numbered] .. they tell a ton...
« Last Edit: November 16, 2005, 18:44:50 by A Dalton »
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ja17

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  • USA, OH, Blacklick
  • Posts: 7414
Re: Backfiring
« Reply #4 on: November 17, 2005, 11:30:23 »
Hello,
As Bob mentioned if the car backfires or coughs through the intake it is probably running too lean.

Improper ignition timing can cause backfiring also.



Joe Alexander
Blacklick, Ohio
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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
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