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kymmitsu
Samba Member
Joined: January 02, 2018
Posts: 7
Location: Melbourne Vic Australia
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 Posted: Sat Apr 21, 2018 8:22 pm Post subject: Idles Rough |
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Hi
Wondering if I could get some advice on my 71 STD Beetle.
I purchased it 6 months ago - it ran OK but when cold was a bugger to keep running. Found Choke spring broken.
Its a AB engine - which should be a 1300 but PO insisted its a 1600. Anyway externally I can tell???
It had a 34 PICT 3 Bocar on it - it needed a kit - so I though I would buy a Solex from Volksbitz. Also had a 009 Distributor
A service sheet from PO showed Compression ~ 120 all cylinders.
I have done
Valves
Spark Plugs - Bosch W8AC .6mm
New Leads
Solex Carb - set by Tim for Vac Adv
Coil
Dist - Vac Adv Electronic.
Tested with "start you bastard" for Vaccum leaks.
Whilst I waited for the Carb (US to AU) I added the above - didn't run up.
Also moved Fuel Filter to under car
Once arrived I fitted - ran through the setting up of the Carb - Ran .. Ok but it would take 5 or so seconds to return to idle. Felt really strange downshifting Ran through the settings again.
Took it for a spin - wouldn't idle correctly had to use throttle to keep running.
I discounted the Carb so I started to add back some of the old parts replaced.
Started with the Dist - back to the 009, then the coil. Strangely - after the coil was replaced it returns to idle as expected - no delay???? still not a smooth idle.
Any ideas why the delay on the coil ?????
Cleaned the carb idle jet (one on righthand side) + turned it 1/4 of a turn with no real difference. Even cleaned and put the Bocar Idle jet in.
So I am thinking Ill need to clean the carb - maybe some gunk from rebuild or more likely when I moved the filter has gone through.
Is there anything I can do before removal.
If I need to remove any pointers to what I should be looking for when opening it up?
(I have put on the Electronic Ignition and Coil again)
Any advice is appreciated
engine Pic incase
Last edited by kymmitsu on Sat Apr 21, 2018 8:32 pm; edited 1 time in total |
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Ricksurfin
Samba Member
Joined: September 02, 2017
Posts: 295
Location: Huntington Beach, CA
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| Posted: Sat Apr 21, 2018 8:26 pm Post subject: Re: Idles Rough |
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| Not sure if it’s the answer to your problem, but you said you adjusted valves to .15mm? Spec is .006mm. |
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Ricksurfin
Samba Member
Joined: September 02, 2017
Posts: 295
Location: Huntington Beach, CA
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| Posted: Sat Apr 21, 2018 8:28 pm Post subject: Re: Idles Rough |
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| double post |
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kymmitsu
Samba Member
Joined: January 02, 2018
Posts: 7
Location: Melbourne Vic Australia
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| Posted: Sat Apr 21, 2018 8:32 pm Post subject: Re: Idles Rough |
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| Ricksurfin wrote: |
| Not sure if it’s the answer to your problem, but you said you adjusted valves to .15mm? Spec is .006mm. |
Good spotting - thanks - Typo |
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mukluk
Samba Member
Joined: October 18, 2012
Posts: 7028
Location: Clyde, TX
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| Posted: Mon Apr 23, 2018 3:16 pm Post subject: Re: Idles Rough |
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| Ricksurfin wrote: |
| Not sure if it’s the answer to your problem, but you said you adjusted valves to .15mm? Spec is .006mm. |
Spec is .15mm or .006 inch -- .006mm would be waaay too tight.
_________________
1960 Ragtop w/Semaphores "Inga" |
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Pruneman99
Samba Member
Joined: February 22, 2012
Posts: 5013
Location: Oceanside
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| Posted: Mon Apr 23, 2018 3:28 pm Post subject: Re: Idles Rough |
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| Make sure the two ports on the rear of the carb are not sucking vacuum and are plugged inside. If they are sucking vacuum, it will never idle right. |
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