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dungeoncrawl Samba Member
Joined: January 17, 2008 Posts: 105
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Posted: Tue Sep 14, 2021 6:50 am Post subject: Engine doesn't turn off cleanly |
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Not an engine guy so sorry if this is a newb question. I've got a 1970 KG that I just purchased and also had a 1970 KG back in 1986 that does this same thing....when I turn the engine off, it doesn't just "turn off". There's an extra "putter, shimmy and shake" or two as the engine gives a final second or so before turning off. Anything to be done about that? |
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kingkarmann Samba Member
Joined: November 05, 2003 Posts: 4105
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Posted: Tue Sep 14, 2021 7:31 am Post subject: Re: Engine doesn't turn off cleanly |
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Perhaps a dirty idle cut-off jet if your engine has one.
Excess carbon deposits. Try adding Seafoam for each fill up.
I also run 93 octane in both my Ghia's. _________________ "Depression is a malfunction of the instrument we use to determine reality.”
Mike Gerson
What is your "Bespoke Reality"? |
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Braukuche Samba Member
Joined: September 03, 2004 Posts: 10965
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Posted: Tue Sep 14, 2021 8:02 am Post subject: Re: Engine doesn't turn off cleanly |
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Idle speed could be too high
Timing too advanced _________________ Go Reds! Smash state!
Retirement is here!
1956 Ghia
1959 SO-23 Westfalia
1960 double cab
1960 Baja Bug
1963 stretched double cab
1962 Golde sunroof Ghia
1963 356 B coupe
1963 Notchback
1967 21 window less rusty now
1973 Ghia convertible |
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Marcdeb Samba Member
Joined: May 22, 2019 Posts: 3009 Location: Vermont
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Posted: Tue Sep 14, 2021 8:07 am Post subject: Re: Engine doesn't turn off cleanly |
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You don't mention if any work has been done that you know of such a basic tune up. I would start with a full tune up including adjusting the valves. These engines are quite basic and not to complicated to work on. If you haven't already, get the Bentley Service Manual for Beetle and Karmann Ghia 1970 to 1979 with the orange cover. It is money well spent. _________________ Marc
68 Karmann Ghia Cabrio Autostick
71 Karmann Ghia Cabrio
Previously Owned:
2011 VW EOS Hard Top Conv
2008 Saab 9-3 2.0T Conv
2003 Saab 9-3 SE Conv
2001 Saab 9-3 Conv
1998 BMW 3 Series Conv
1997 Saab 900 Conv
1997 Mazda Miata
68 Ghia Vert Survivor with 22,350 miles: https://www.thesamba.com/vw/forum/viewtopic.php?t=768107&highlight=
71 Ghia Vert Restoration: https://www.thesamba.com/vw/forum/viewtopic.php?t=726710&postorder=asc |
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kiwighia68 Samba Member
Joined: October 20, 2013 Posts: 2867 Location: Auckland, New Zealand
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Posted: Tue Sep 14, 2021 12:51 pm Post subject: Re: Engine doesn't turn off cleanly |
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I have the same problem, but only after I've been on a longer drive (15 to 20 miles or more) I have a 1641 engine.
Second point: I had a standard carb on the engine and the engine cut off cleanly then, but since I've had twin carbs (small Webers) I've had that spluttering and shaking 2 second problem after cutting the ignition. _________________ Festina lente - hasten slowly
1968 Ghia named Emiko
Resto completed Dec 2015 |
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jeffrey8164 Samba Member
Joined: January 06, 2018 Posts: 3804 Location: Georgia
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Posted: Fri Sep 17, 2021 8:02 am Post subject: Re: Engine doesn't turn off cleanly |
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You’re probably running too rich and the carbon build up is on fire causing what was called dieseling. Either fix that or turn it off in gear.
I run a 2276 with dual 45 Dells. I drive it on 120 mile round trips regularly.
No dieseling at all.
Pull a plug or two and see how black they are. _________________ Volkswagen!
Turning owners into mechanics since 1938.
“Let he that is without oil throw the first rod”
(Compression 8.7:1) |
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dungeoncrawl Samba Member
Joined: January 17, 2008 Posts: 105
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Posted: Sun Sep 19, 2021 8:06 pm Post subject: Re: Engine doesn't turn off cleanly |
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jeffrey8164 wrote: |
You’re probably running too rich and the carbon build up is on fire causing what was called dieseling. Either fix that or turn it off in gear.
I run a 2276 with dual 45 Dells. I drive it on 120 mile round trips regularly.
No dieseling at all.
Pull a plug or two and see how black they are. |
Just had the spark plugs replaced this weekend and no change. Also, the guy that fixed it for me asked what type of fuel I was running. When I last filled up (the first time I filled it up), I put regular in it. He thinks that might be the problem. Going to run that gas out and put some higher octane in there to see what difference that makes.
Last edited by dungeoncrawl on Sun Sep 19, 2021 8:10 pm; edited 1 time in total |
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overboost Samba Member
Joined: June 11, 2021 Posts: 178 Location: Huntersville, NC
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Posted: Sun Sep 19, 2021 8:09 pm Post subject: Re: Engine doesn't turn off cleanly |
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Check the idle cutoff plunger. make sure the PO didn't cut it off for a failed idle cutoff valve _________________ The older I get... The faster I was... |
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