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wilsy
Samba Member
Joined: July 05, 2009
Posts: 12
Location: scotland
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 Posted: Sat May 08, 2010 9:24 am Post subject: what has happened to my idle |
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i have a 69 bus it has recently had a new engine and carb 34 pict 3 on it i replaced the points, coil and condensor and static timed it per the idiots guide (still waiting for timing light) the bus ran fine although it was idleing at 1300 rpm tried to set the idle using the bentley manual now the bus will not idle and barely starts, i have to put the acc pedal almost to the floor does anyone have any idea where ive gone wrong and how i would go about fixing it.
cheers. |
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hazetguy
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Joined: April 06, 2001
Posts: 10804
Location: the past
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wilsy
Samba Member
Joined: July 05, 2009
Posts: 12
Location: scotland
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| Posted: Sat May 08, 2010 9:46 am Post subject: |
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| doesnt seem to have a plug, the electric air cut off seems fine i tested it by taking off the spade connector turning on the ignition and holding against it, it make a clicking noise im assuming it works. |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 53189
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Sat May 08, 2010 11:29 am Post subject: |
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How much did you turn the adjustment screws?
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wilsy
Samba Member
Joined: July 05, 2009
Posts: 12
Location: scotland
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| Posted: Sat May 08, 2010 12:19 pm Post subject: |
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| i turned the idle mix screw all the way in then turned it back 2 and half times the idle speed adjust screw was all the way in turned it back 1 turn |
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tom62
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Joined: August 21, 2005
Posts: 654
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GusC2it
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Joined: June 23, 2005
Posts: 1376
Location: Orlando, Florida, USA
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Wildthings
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Joined: March 13, 2005
Posts: 52711
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| Posted: Sat May 08, 2010 9:25 pm Post subject: |
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How loose are your throttle shaft bushing? If they are sloppy you will have a vacuum leak that will make the engine run lean if everything is set to standard parameters. You may have other vacuum leaks as well, remove and suck on every hose that plugs into the carburetor and/or manifold. What manifold are your running, does it use boots? They could be bad as well.
If the carb was set up to run with a DVDA distributor and you are running it with a SVDA distributor, this will cause problems as well. Keith recommends installing a pop rivet in the bleed hole in the throttle plate to correct for this. |
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SGKent 
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Joined: October 30, 2007
Posts: 42940
Location: at the beach in Northern Wokistan
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| Posted: Sat May 08, 2010 9:42 pm Post subject: |
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check your point gap again. Check the timing again. Once you get it running turn the distributor one way then the other to see is that improves it. Do not drive this bus until you get a timing light.
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