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microbuser
Samba Member
Joined: September 09, 2005
Posts: 68
Location: Humboldt County
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 Posted: Tue Feb 23, 2010 7:57 pm Post subject: Weber Pump Rod Foes |
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I am having problems with my pump rods binding on my 40IDF's. I think they are also pumping too much fuel. They idle good but upon acceleration there is a lot of hesitation until I rev past 3000RPM. I noticed that the rods do not slide past the pump arm, instead they get caught up there. Do the rods look properly set up with the springs? Am I missing parts? Thanks.
Specs:
1776 stock heads and cam (Early Baywindow Bus)
phat boy muffler via headers
010 Disty w/pertronix
Jetting:
Main 115
Air 200
Idle 45
Venturi 28
Emulsion f11
Pump jet 55
Floats 11mm (w/out gasket)
Snail reading on all throats 5
Timing 30 ATC
https://www.thesamba.com/vw/gallery/pix/650598.jpg
https://www.thesamba.com/vw/gallery/pix/650599.jpg |
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microbuser
Samba Member
Joined: September 09, 2005
Posts: 68
Location: Humboldt County
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| Posted: Wed Feb 24, 2010 12:44 am Post subject: |
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| Anyone? Thanks. |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26787
Location: Colorado Springs
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| Posted: Wed Feb 24, 2010 2:07 am Post subject: |
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I actually held one of my 36 idf's up to the computer screen to compare.
Looks about the same.
If it really is binding I would bend the tab a little, then re-adjust by eve-balling the location of the lever.
Manually test the pumps: open throttle quickly-both squirters should shoot a strong stream of gas for about a half second.
Driving test-move gas pedal in slow motion while driving. Should drive well. Acc pumps are only for when you "stomp" on the gas. |
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