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kman69

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PostSubject: carb issues    Tue Jan 08, 2013 12:30 am

so i rebuild me webber 40 an its sounds like its starving for fuel an i check the fuel pump was kinda weak so got a new one an it flows really well but the carb still sounds like its starving for fuel whent thro an cleand all the jets but still the same can any one help What a Face
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Mateo
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PostSubject: Re: carb issues    Tue Jan 08, 2013 1:30 am

Does it idle?

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kman69

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PostSubject: Re: carb issues    Tue Jan 08, 2013 1:52 am

Yea it dose tell the bowl runs out
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PostSubject: Re: carb issues    Tue Jan 08, 2013 1:58 am

Well, sounds like you're telling me your float is sticking...

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kman69

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PostSubject: Re: carb issues    Tue Jan 08, 2013 3:24 am

Do I just bend the tab on we're te needle is out more or is there a better way to fix that
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kman69

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PostSubject: Re: carb issues    Tue Jan 08, 2013 12:40 pm

Would it stick even if the flot is brand new with new needle too?
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PostSubject: Re: carb issues    Tue Jan 08, 2013 4:30 pm

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kman69

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PostSubject: Re: carb issues    Tue Jan 08, 2013 4:47 pm

Ok sweet thanks man
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kman69

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PostSubject: Re: carb issues    Tue Jan 08, 2013 9:50 pm

Would my fuel pump not be enuff cus it idles now but when hit the gas it dies it has webber 44s on it would that be any reason for the carb not getting the fuel it needs
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PostSubject: Re: carb issues    Tue Jan 08, 2013 10:25 pm

http://www.thesamba.com/vw/forum/viewtopic.php?t=135863&start=0&postdays=0&postorder=asc&highlight=setting++idf+webers
Not knowing what setup you have this write up is a good place to start for setup and tuning.
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kman69

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PostSubject: Re: carb issues    Tue Jan 08, 2013 10:56 pm

i just have the two bearal carb
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low67vdubinnocal

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PostSubject: Re: carb issues    Wed Jan 09, 2013 12:12 am

Not knowing what setup you have means not knowing what your engine size is from say 1600cc to over 2000cc everything depends on everything you already have. If you have dual 44s on a 1600 it might be way too much carb depending on what the carbs are jetted at. If you do a search in the engine/transmission section on the samba you will find hundreds of threads on setting up 40 and 44 idf webers with your engine combo. Bring that info back here and post what you did to repair it and the next person can search for it here.
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kman69

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PostSubject: Re: carb issues    Wed Jan 09, 2013 1:05 am

ok i look it up but i have the 1600 but put bigger jugs on it so its a 1679 i would say but i look it up an see what i could do this is my first vw engine im a ford guy but everyong in my club has fords an chevys an i want to be different an whent with but use to have a bus but never a bug an i think im gonna switch over to the vw side ppl lot friendlyer an i like it thanks for all the hlep everyone has help me with What a Face
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PostSubject: Re: carb issues    Wed Jan 09, 2013 1:35 am

It's stilll just basic automotive, ford gm mopar vw. Start at the fuel tank and work back to the carb or carbs depending on if you have dual 40's or 44's or a single 40 or 44 IDF. Clean fuel tank, good fuel, clean filter and 3 psi fuel pressure at the carb inlet.
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Mateo
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PostSubject: Re: carb issues    Wed Jan 09, 2013 2:52 am

Webers are pretty light in the fuel pressure requirement category.

3 to 5 lbs is all you need. So usually if your fuel pump is working at all, it is enough.

Testing your fuel pressure is the best way to be sure. The fact that your bowl fills up, kind of tells me it is working.

So if it idles, but dies on acceleration that could be a plugged jet or your accelerator pumps aren't working.

To check if you accelerator pump is working, with the engine off, look down the venturis, and pull the throttle open. You should see an obvious squirt of fuel in each barrel.

IF those are working, I would look to the main jet as a possible issue.

If the engine idles and you can slowly bring up the rpm but the engine dies under rapid acceleration then the main jet could be plugged. With a 44IDF Weber on a 1600 motor, most of the time you are running under the idle jet accept under heavy acceleration.

You might also have a leak along the intake manifold between the carb and the heads. That will lean a motor out as well...

Just some thoughts.

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PostSubject: Re: carb issues    Wed Jan 09, 2013 4:19 pm

Ok cool thank you il try that out tonight an let you know what happens
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PostSubject: Re: carb issues    Wed Jan 09, 2013 5:42 pm

Is this carb set up a single 44 idf or dual 44 idf ?
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kman69

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PostSubject: Re: carb issues    Wed Jan 09, 2013 8:33 pm

It's a singal carb 2 berrel
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PostSubject: Re: carb issues    Thu Jan 10, 2013 12:52 am

This is not a bad thread on a single 44 idf with close to stock size engine. The carb is an EMPI 44 but its still a clone of the weber 44 idf and all of the parts and jets are the same. There are some links in the thread to some other tech sections that can be helpful also.
http://www.thesamba.com/vw/forum/viewtopic.php?t=457037&start=0&postdays=0&postorder=asc&highlight=single+weber++idf+jets
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PostSubject: Re: carb issues    Thu Jan 17, 2013 12:56 am

Ok so I put new fuel lines well the rubbers from the tank to the engine an it seams to fuel in but it still sounds ruff an if adjusted an adjusted all in the carb could the just be shot it's Been rebuild so I'm just lost for ideas now
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my65rhd
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PostSubject: Re: carb issues    Thu Jan 17, 2013 6:54 pm

It might have a clogged idle jet. They plug up real easy. They are easy to remove and clean....Kyle
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low67vdubinnocal

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PostSubject: Re: carb issues    Thu Jan 17, 2013 11:42 pm

Besides plugged idle jets have you checked the rest of your tune up items ? Plugs gapped and in good shape ? Valves adjusted ? points,cap and rotor all in good shape ? Timing set correctly ? Carbs get blamed for a lot of other issues besides the carb sometimes. Just rule out everything else before giving up on it. When changing out fuel lines and filters it is possable to get something in the line and plug an idle jet. Like mentioned above check the idle jets again just to rule that out.
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kman69

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PostSubject: Re: carb issues    Sun Jan 20, 2013 10:01 pm

Yea all the valves are set at .006 an all the stuff in side the dissy is brand new an set an the plugs an wires are new an spark plugs set to the gap I was told in the book an il go back an clean them agin just to make sure like you said there easy to take out.

Someone told me is could have bad intake rubbers but brand new but just to make sure when got it to run for the few seconds sprayed carb clean around them but no diff in how it ran
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kman69

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PostSubject: Re: carb issues    Sun Jan 20, 2013 11:21 pm

So I was thinking could it not be getting enough fuel ? The fuel pump pumps it's like a small flow should I put a electric fuel pump that is stronger?
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PostSubject: Re: carb issues    Mon Jan 21, 2013 5:28 pm

You need both pressure and volume . A good stock pump can provide both. An electric pump can provide both. Some refuse to use an electric pump as there is a real fire hazard if you dont set the pump up with a saftey switch. You need to get a fuel pressure tester and make sure you have the correct pressure and volume at the inlet for your carb setup. Make sure the inlet is clean all the way through. Unreal what I have found living inside my IDF. inlets in the past.
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