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shakadon
Samba Member
Joined: April 13, 2013
Posts: 24
Location: SoCal
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 Posted: Sun Dec 14, 2014 8:09 am Post subject: Where is the idle adjustment screw on 71 FI type 3? |
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My daughter has a squareback that we are restoring, and it runs really good, however the idle is high. I have seen mention of an adjustment for this, but I dont have a manual to see where it is. If anyone can help me on this I would appreciate it.
TIA
Don |
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Donnie strickland
Samba Member
Joined: December 21, 2009
Posts: 2403
Location: Moody, AL
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| Posted: Sun Dec 14, 2014 8:21 am Post subject: |
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It's on the intake air distributor, right where the neck from the air cleaner joins it:
Loosen the locknut and turn the screw to adjust. But make sure your engine is at operating temperature first, and only after everything else (timing, valves, point gap, etc.) is already set. The idle is the last thing you do.
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71 Elm Green FI A/T Squareback |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21511
Location: Oklahoma City
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| Posted: Sun Dec 14, 2014 9:46 am Post subject: |
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| And start looking for the cause. Usually a vacuum Leak, timimg, fuel presure change..etc. Ray |
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shakadon
Samba Member
Joined: April 13, 2013
Posts: 24
Location: SoCal
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| Posted: Mon Dec 15, 2014 12:10 pm Post subject: |
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She has had it for a while, but not driving it all that much. It had been leaking tranny fluid so when I replaced the tranny pan gasket, I noticed it was leading gas as well.
I fixed the gas leak, and I have a feeling that now it has more fuel pressure which is causing the idle to be higher?
Thanks for the photo, it is really helpful. I will give that a try and see how it runs. Now I just have to fix.
Speedo
Clock
Leaking air box
Heater
List is getting shorter!! |
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Mike Fisher
Samba Member
Joined: January 30, 2006
Posts: 17969
Location: Eugene, OR
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| Posted: Mon Dec 15, 2014 4:31 pm Post subject: |
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You Need this brown Bentley manual for the fuel injected car & the automatic transmission! Post a WTB ad in Type 3 Parts for sale if you need any parts.
http://www.bentleypublishers.com/volkswagen/repair...views.html
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https://imgur.com/user/FisherSquareback/posts
69 FI/AT square Daily Driver
66 sunroof,67,70,71,71,71AT,72,72AT,73 Parts
two 57 oval ragtops sold
'68 Karmann Ghia sold
Society is like stew. If you don't keep it stirred up you end up with a lot of scum on the top! - Russ_Wolfe/Edward Abbey |
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shakadon
Samba Member
Joined: April 13, 2013
Posts: 24
Location: SoCal
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| Posted: Tue Dec 16, 2014 9:16 am Post subject: |
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I adjusted the idle by ear (I dont have a strobe) and it ran great at idle and low RPM's, but at higher RPMs, it bogged.
When it was idling high, it ran fine at all rpms, probably needs a complete tune up because it seems like the advance is not functioning properly.
I do need to get one of those manuals.. |
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Donnie strickland
Samba Member
Joined: December 21, 2009
Posts: 2403
Location: Moody, AL
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| Posted: Tue Dec 16, 2014 9:51 am Post subject: |
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You don't need a strobe when adjusting the idle speed -- you need a tach (I use a tach/dwell meter).
Yes, you need a complete tune up first, and the idle is the last thing to adjust in that process. Get a manual, do some reading on here, and ask questions. Don't guess, it usually makes things worse. 
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71 Elm Green FI A/T Squareback |
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