JBugs - 1971 VW Super Beetle - Carburetor Replacement:

Video Transcript:

this 1971 student video's got itself an old worn out 34 Pick 3 carburetor and apparently 0:07 it sprung a league 0:08 hi I'm Sam with jbugs.com we're going to swap out this old and now leaking 34 Pick 3 carburetor 0:19 for one of our new 34 Pick 3 reproduction cards the hoses that are connected to the Carburetor removal 0:24 oil bath air cleaner are removed followed by the air cleaner then the electrical connections 0:30 at the choke and the idle solenoid are disconnected throttle cable is disconnected and the nuts 0:37 are run threaded from the base of the manifold so the carburetor can be removed so this is Carburetor information 0:42 our 34 Pick 3 replacement carburetor this is something that we worked on with the manufacturer 0:48 developing to our specifications and we're very very happy with it it still has a factory 0:54 eye Auto solenoid Factory choke set up for 12 volts it does have a threaded fuel Inlet 1:00 so there's a lot less prone to having those fuel lines pull out as is common with the 1:04 original Distributors still has our vacuum advance our vacuum recharge as well as our 1:11 vacuum signal for auto stick carburetors that need that additional vacuum Port there so 1:17 the carb comes with a 55 Idle Jet and a 127.5 main jet and then it comes with a 0.70 airjet 1:27 additionally it comes with a larger 137.5 Main Jet and a 60 Idle Jet for those that 1:36 have higher amounts of ethanol in their fuel like 10 or more you're probably going to want 1:40 to swap out to these Jets just because with more ethanol you have less Fuel and fuel is 1:47 actually what we're burning so we are definitely start it run it see how it responds first 1:52 and then go from there based on your tuning and how much you're going to have to pull 1:57 out your uh your fuel screw studs just thread in they come loose in the Box just so they 2:05 don't poke through the foam Packaging we've of course got our base gasket and then we've 2:10 got flange serrated nuts so you don't have to hold that little washer on while you're 2:17 trying to thread that on the bottom side of the intake manifold so it's got a nice serrated 2:23 flanged edge so there's no need for a washer or a lock washer after the fact 2:31 pre-assembled so to speak we're gonna go put this on the car our new carburetor is installed Carburetor installation 2:36 reversing those same steps 2:37 it's nothing horribly dirty but there's some debris in there this is more or less how they Oil bath air cleaner information 2:54 used to be oil baths are a very simple and efficient air cleaner so air comes in through 3:01 here gets swished around through here and then it actually has to go through that 3:13 and through here before it goes inside this little guy right here and out there and then 3:23 down there so it's a somewhat complicated but very simple and effective way of cleaning 3:33 the air all right I'm going to add some oils 3:39 fill up the bottom till it's just about level with the line and we'll note that the vent 3:46 on the back side that would have gone to the fan shroud has already been plugged 3:55 and with that our carburetor is installed we've gone through verified that everything's 4:00 connected tight wire is not going to short out we're gonna crank it over get some fuel 4:07 back into that float Bowl and start her up and see how she runs out of the box Carburetor test run 4:42 so we started her up let it run for a few moments make sure that we've got no fuel leaking 4:47 we're going to start her up again let the choke warm up and then we'll go back and double 4:52 check that our accelerator arm is set correctly just doing some quick acceleration we noticed 4:59 a little bit of hesitation so we're going to check our air and our fuel screws we'll 5:04 show you guys how to do that in a moment but for now we're just going to start her up let 5:08 her warm so now that the car is mostly warmed up make sure that the chokes fully opened Carburetor adjustment 5:17 and 5:18 see we got a little bit of play right there so we're going to turn until it just contacts 5:29 there nice and solid and then we're gonna go one quarter turn more so right now we're 5:34 right here we're going to turn that screw one quarter turn 5:37 we've got our fast idle screw set we're going to set our bypass screw or truly our idle 5:45 screw to 900 RPM we're going to come back and work on the air control screw to get the 5:52 highest smooth idle and then we're going to go back and reset our idle screw at 900 RPM 6:15 thank you 6:32 [Applause] 6:40 [Applause] 6:48 laughs 6:57 [Applause] 7:05 all right so with that our carburetors installed and tuned we've gone over all the steps to 7:25 show you guys how to do that however it feels like after doing a quick uh drive around the 7:30 building here a couple times it doesn't feel like our distributor is advancing properly 7:34 so I'm gonna go through and show you guys how to set the timing on a double09 and that'll 7:40 be in our next video thanks for watching