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VWMIKE76 Samba Member
Joined: February 21, 2006 Posts: 669 Location: lynnwood, washington
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Posted: Mon Oct 13, 2008 3:54 pm Post subject: |
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busdaddy do you think it could be a stuck float? I went over and looked at vwmike311's bus and its way more than condensation like raw fuel runs in the intake and right out, and will barely run _________________ Mike
77 westy Mac n cheese aka "Mac"
71 crew cab "Damien" sold and missed lots!
78 westy "Doc". in very good hands of a fellow samba member!
79 hardtop landmark "Shaggy II" |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51057 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Mon Oct 13, 2008 4:46 pm Post subject: |
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It could easily be a stuck float, loose needle and seat or no gasket or a loose mainjet, or too much fuel pressure. Take off the carb and have a look inside, odds are Chinese quality control slipped up. _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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keifernet Samba Search & Rescue
Joined: May 11, 2002 Posts: 19395 Location: Samba Center for Behavioral Science
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Posted: Mon Oct 13, 2008 6:59 pm Post subject: |
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busdaddy wrote: |
It could easily be a stuck float, loose needle and seat or no gasket or a loose mainjet, or too much fuel pressure. Take off the carb and have a look inside, odds are Chinese quality control slipped up. |
Amen Brotha!... several things to check if you are having that much fuel spilling over... |
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VWMike311 Samba Member
Joined: July 06, 2004 Posts: 60
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Posted: Tue Oct 14, 2008 8:36 am Post subject: |
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Thanks guys! I will be checking it out tonight, and VWMike76 is gonna help me out, isn't that right Mike???? |
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VWMike311 Samba Member
Joined: July 06, 2004 Posts: 60
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Posted: Wed Oct 15, 2008 11:01 pm Post subject: |
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Okay, so I took the carb off, and pulled the top of the carb off, and that main big gasket fit kinda funny. So much so, that when I pulled the float up, it would get jammed on it, like stuck open. I'm not sure if the float ever actually comes up this high or not, but regardless I can't see any good reason for all this extra gasket here. So I trimmed it, very carefully, also took out a couple jets, blew them out, and put it all back together, and I THINK things may okay now. It started up pretty good, and sounded like a bus should! It was kinda late, and my bus is kept at my sisters, so I couldn't really rev it up much, and wak all the neighbors. Soooo, I potentially could be driving my new bus by this weekend! |
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VWMIKE76 Samba Member
Joined: February 21, 2006 Posts: 669 Location: lynnwood, washington
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Posted: Thu Oct 16, 2008 10:37 am Post subject: |
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you better be driving to work next week! _________________ Mike
77 westy Mac n cheese aka "Mac"
71 crew cab "Damien" sold and missed lots!
78 westy "Doc". in very good hands of a fellow samba member!
79 hardtop landmark "Shaggy II" |
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Wilfredo R Samba Member
Joined: May 26, 2008 Posts: 238
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Posted: Sat Oct 25, 2008 6:25 pm Post subject: |
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What does the Choke do? |
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keifernet Samba Search & Rescue
Joined: May 11, 2002 Posts: 19395 Location: Samba Center for Behavioral Science
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Posted: Sat Oct 25, 2008 8:52 pm Post subject: |
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Wilfredo Rumingan wrote: |
What does the Choke do? |
I covered the choke setting on page one of this thread.... the choke richens the mixture when engine is cold until it warms up sufficiently.
keifernet wrote: |
Yes, and since you say your not sure your choke is working, or not adjusted right that could be a part of your problem.
first, I'm sure you at least have the wire from the 12V+ side of the coil attatched to the electromagnectic cutoff solenoid and then over to the choke.
With the engine COLD first thing in the AM
loosen the three screws on the choke hold down collar and rotate it counterclockwise till the butterfly (and the choke cam) moves nearly shut.
then the set screw will be on the upper notch of the fast ldle cam...
( open the throttle a bit to keep the screw on the throttle arm dis-engauged) until you set the choke
You should see a " dot" or a line scribed on the choke element housing
and then a few lines cast into the choke housing on the carb top.
these marks are a general referrence and sometimes ( mostly in the summer ) you have to go past them to get the choke to do it's job
It is important to remember to re-set the choke several times a year as the weather/ seasons change. ( the bi-metallic spring inside the choke element reacts to the ambiant temperature and the choke sets accordingly)
if the choke is set for summer setting the first cold morning it will be closed up tighter than a bulls ass in fly season, so back off it a bit or the engine will chug and run rich too long for cooler weather warmup.
vise versa for warm weather... if the element is not set tight enough the choke will not stay on long enough for the manifold to warm by the pre heater tubes and the engine will die the first few stops down the road.
Here in Houston ( and other Southern Cities/ climates) you have to almost re -set it in between every cold front/ snap/ warmup just to keep the engine starting and running smooth and easy in the AM and later in the day after work.
Sorry this got so long but it pretty much sums up the choke deal...! |
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Vwman55 Samba Member
Joined: August 11, 2005 Posts: 550 Location: Valparaiso, IN
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Posted: Mon Nov 17, 2008 8:02 pm Post subject: |
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Is there a starting point for the bypass screw? |
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keifernet Samba Search & Rescue
Joined: May 11, 2002 Posts: 19395 Location: Samba Center for Behavioral Science
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Posted: Tue Nov 18, 2008 7:00 am Post subject: |
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Vwman55 wrote: |
Is there a starting point for the bypass screw? |
2 1/2 turns out. |
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2jmotorsports Samba Member
Joined: May 05, 2004 Posts: 523 Location: Long Beach, CA
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Posted: Fri Jan 30, 2009 9:16 pm Post subject: |
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Another solex 34PICT3 freshly rebuilt because it wouldnt idle.
After rebuilding it and reinstalling it, I noticed a tiny bit of fuel leaking around both sides of the throttle shaft. I never noticed this before the rebuild and am wondering whether I should even continue adjusting the settings and need to get it rebushed. Or maybe I missed something during the rebuild that is causing it to leak?
EDIT: I have tried many of the tips on this thread and still no luck getting my carb to idle. Rather than continue fishing for problems, is it fair to say that I should start from the very beginning and follow this entire procedure step by step in order to insure the quickest route to a good running carb?
http://www.vw-resource.com/34pict3.html |
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rtarh2o Samba Member
Joined: November 06, 2007 Posts: 18 Location: Texas
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Posted: Sun Feb 08, 2009 7:34 pm Post subject: |
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I have a 78 Super Beetle, I removed the fuel injection years ago and have had idle trouble ever since. I have a Bocar 34 PICT, my question is about the vacuum ports, I did not replace the distributor so it still has the fuel injection distributor, meaning no vacuum. I simply plugged the vacuum ports on the carb.
It seems like I got it to idle ok for a few years but it sat up for about 2 years and now won't idle at all. I took off the carb and somewhat took it apart and cleaned it, it looked ok?
I have tried all the adjustments, I may need to rebuild it but now it won't idle once it is warmed up, cold high idle is fine.
Do I need the vacuum? Am I going to need a new distributor? If so which one should I get?
Rusty |
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sofakingcool Samba Member
Joined: November 13, 2007 Posts: 405 Location: Lexington, SC
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Posted: Wed Feb 25, 2009 12:26 pm Post subject: |
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So if its 2.5 turns out for the bypass... how much for the volume screw? (for a good starting point anyways...) |
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keifernet Samba Search & Rescue
Joined: May 11, 2002 Posts: 19395 Location: Samba Center for Behavioral Science
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Posted: Wed Feb 25, 2009 12:45 pm Post subject: |
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sofakingcool wrote: |
So if its 2.5 turns out for the bypass... how much for the volume screw? (for a good starting point anyways...) |
Generally 2-2.5 turns out on both of those screws will let the engine start and run to warm up and adjust further. IF you don't get much reaction out of either of them when you do start turning them then your carb or engine has other issues.
There is no "setting" screws X turns out that is going to make every engine run perfect/good and it's just meant to be a baseline. |
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Emeritusx Samba Member
Joined: June 20, 2008 Posts: 2775 Location: 12 inches behind the wheel
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Posted: Sat Apr 04, 2009 9:57 am Post subject: |
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Turns out that idle jet in mine was my problem. it runs great backed out a 1/16th of a turn. Now to find some lock-tite or fingernail polish or something. I just left it sitting there for now.
I'm glad I stumbled in here (searching for wont idle gave me 7000 hits )
BTW Engine RUNNING in thing! Clutch feels good. Brakes are scary - tires are studded snows. And it just started raining. _________________ 82 Westy ☢, 66 Splitty ☮, 73 Type 181 ✠ |
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parsonjack Samba Member
Joined: May 25, 2009 Posts: 8
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Posted: Thu May 28, 2009 12:12 pm Post subject: |
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ok..had fuel starvation issues on my 73 1600 bay which i first traced to the fuel pump pin had shifted and i was only getting a dribble of gas to the carb...fitted new mech pump and now loads of gas but no idle and running rough up to 2000+ rpm. from this thread figured it could be the idle circuit causing the problem so removed and blew out the idle pilot jet as suggested. will idle now but only with the jet backed out about 1/2 turn which i could set with loctite as suggested.
one question...by doing this am i not just working round another issue somewhere else in the idle circuit..crud or else...? |
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telford dorr Samba Member
Joined: March 11, 2009 Posts: 3547 Location: San Diego (Encinitas)
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Posted: Thu May 28, 2009 12:24 pm Post subject: |
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Emeritusx wrote: |
Now to find some lock-tite or fingernail polish or something. |
I'd avoid doing that - if that stuff ever got inside the carb, it'd be misery ever getting it out.
If the engine runs OK with the jet backed out, kinda indicates it's plugged up. Might be the wrong size. Might try replacing it. _________________ '71 panel, now with FI
'Experience' is the ability to recognize a mistake when you're making it again - Franklin P. Jones
In theory, theory works in practice; in practice, it doesn't - William T. Harbaugh
When you're dead, you don't know you're dead. The pain is only felt by others.
Same thing happens when you're stupid. - Philippe Geluck
More VW electrical at http://telforddorr.com/ (available 9am to 9pm PST) |
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parsonjack Samba Member
Joined: May 25, 2009 Posts: 8
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Posted: Thu May 28, 2009 1:16 pm Post subject: |
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seems a few folks have found a dab of loctite helps set the idle pilot when you back it out a tad...as long as you dont use a fistful then there shouldnt be an issue...
still would like to know whether doing this is a permanent fix..or just works round a different issue that should be sorted instead...like crud elsewhere..? |
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keifernet Samba Search & Rescue
Joined: May 11, 2002 Posts: 19395 Location: Samba Center for Behavioral Science
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Posted: Thu May 28, 2009 1:25 pm Post subject: |
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parsonjack wrote: |
seems a few folks have found a dab of loctite helps set the idle pilot when you back it out a tad...as long as you dont use a fistful then there shouldnt be an issue...
still would like to know whether doing this is a permanent fix..or just works round a different issue that should be sorted instead...like crud elsewhere..? |
If you have stripped the carb, soaked it properly and blown out the passages and it still won't do it, then ( there is no crud?) it's as I have described before... the jet get's overtightened at some point in the life of the carb and needs to be set backed out a bit.
1/2 turn is a lot but I have seen it before. Usually it's just a tiny bit cracked from snug is all it takes.
You can try a different jet or a couple if you have access to some. A different jet ( of the same size even) can make a difference in that.
I agree with you...Loctite has never caused a problem and only an idiot would get it into the orifice of the carb so I think that point is irrelevant. It is what I have used on hundreds of carbs to hold the jet in place. |
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parsonjack Samba Member
Joined: May 25, 2009 Posts: 8
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Posted: Thu May 28, 2009 1:43 pm Post subject: |
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is the bocar idle pilot interchangeable with jets in rebuild kits or would i need a specific bocar jet? i've seen mention of them being different designs but woud like to know for sure. cheers. |
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