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FullyZooked
az supporter
Joined: Mon Oct 25, 2010 9:01 am Posts: 1009 Location: Bendigo
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 Posted: Sat Jan 15, 2011 12:00 pm |
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After having my carb rebuilt I am still having trouble with power.
My poor Vitara won't even get past 90kmh and that's flat on the floor!!!
I have noticed a monster flat spot at 3-4000 rpm and the engine just won't rev past 4000rpm. It feels as though the secondary is opening but the fuel jet is not operating in it and creating a huge lean condition.
So I disconnected the vacuum line for the secondary so it does not operate and now just using the primary it will rev right out in 1-3 gear but still won't get past 90kmh.
So I think it may be a blocked secondary jet. Does this sounds right to you guys? If so how to I fix this?
Any help is much appreciated.
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Teracis
Joined: Sat Dec 11, 2010 10:03 pm Posts: 2261 Location: Gold Coast
Vehicle: Daisy
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Posted: Sat Jan 15, 2011 6:58 pm |
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Rebuild the carby? I'm no expert but if it's giving you that much trouble it might be worth doing.
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FullyZooked
az supporter
Joined: Mon Oct 25, 2010 9:01 am Posts: 1009 Location: Bendigo
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Posted: Sat Jan 15, 2011 10:53 pm |
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Read the first paragraph of my post... It has just been rebuilt but obviously not so well.
Please anyone out there when specific knowledge on these Carbs.
_________________
Built Suzuki's shall reign Victorious.
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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Posted: Sat Jan 15, 2011 10:55 pm |
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FullyZooked wrote: After having my carb rebuilt I am still having trouble with power.
My poor Vitara won't even get past 90kmh and that's flat on the floor!!!
I have noticed a monster flat spot at 3-4000 rpm and the engine just won't rev past 4000rpm. It feels as though the secondary is opening but the fuel jet is not operating in it and creating a huge lean condition.
So I disconnected the vacuum line for the secondary so it does not operate and now just using the primary it will rev right out in 1-3 gear but still won't get past 90kmh.
So I think it may be a blocked secondary jet. Does this sounds right to you guys? If so how to I fix this?
Any help is much appreciated.
Does it drop dead as soon as the secondary tries to open? Check the connections to the solinoids on the carb. One of the is a fuel bowl vent solinoid. If this aint connected the engine really drops dead
Dan _________________ Lil Foot!
http://tiny.cc/gtsw1
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FullyZooked
az supporter
Joined: Mon Oct 25, 2010 9:01 am Posts: 1009 Location: Bendigo
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Posted: Sat Jan 15, 2011 11:45 pm |
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JusT looses power. Wouldn't say drops dead.
All vacuum hoses and solinoids are working as intended. I can't beleive that the car runs better with the secondary disconnected! I have been driving around without secondaries for I don't know how long!
Any other ideas?
_________________
Built Suzuki's shall reign Victorious.
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LAY80N
Joined: Tue Jul 28, 2009 11:30 pm Posts: 455 Location: Newcastle NSW
Vehicle: I drive your mum
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Posted: Sun Jan 16, 2011 7:05 am |
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Have you checked the secondary actuation vacuum pot with a mityvac or something to confirm its operating at the correct vacuum level?
Layto....
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FullyZooked
az supporter
Joined: Mon Oct 25, 2010 9:01 am Posts: 1009 Location: Bendigo
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Posted: Sun Jan 16, 2011 9:20 am |
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Secondary vacuum pot has been confirmed by using vacuum line from inlet manifold. Secondary fully opens just no extra juice 
_________________
Built Suzuki's shall reign Victorious.
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Brett
az supporter
Joined: Tue May 27, 2008 11:30 pm Posts: 1791 Location: Central coast NSW
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Posted: Sun Jan 16, 2011 10:27 am |
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FullyZooked
az supporter
Joined: Mon Oct 25, 2010 9:01 am Posts: 1009 Location: Bendigo
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Posted: Sun Jan 16, 2011 12:00 pm |
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It runs fine with the secondary disabled via unplugging the vacuum pot. This rules out airleaks.
I may just take the carb apart and learn how the insides work and what's stopping the fuel from passing through tHe secondary jet.
Best way to learn is to do I suppose. I'll keep has updated.
_________________
Built Suzuki's shall reign Victorious.
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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Posted: Sun Jan 16, 2011 11:21 pm |
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FullyZooked wrote: It runs fine with the secondary disabled via unplugging the vacuum pot. This rules out airleaks.
I may just take the carb apart and learn how the insides work and what's stopping the fuel from passing through tHe secondary jet.
Best way to learn is to do I suppose. I'll keep has updated.
Is it a mikuni? Still sounds like a blocked or non working fuel bowl vent solinoid. Its the larger circular one at the top of the carb. Double check its electrical connections or even go as far as wiring 12V directly to it and give that a go. _________________ Lil Foot!
http://tiny.cc/gtsw1
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FullyZooked
az supporter
Joined: Mon Oct 25, 2010 9:01 am Posts: 1009 Location: Bendigo
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Posted: Mon Jan 17, 2011 3:04 am |
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Will do jrzook. Yes it is a Mikuni.
You don't happen to have a pic laying by any chance of the solenoid?
What is the purpose of this valve? Opens to let air bleed into the bowl for faster fuel delivery? Thanks for your help so far.
I will check it out this arvo.
_________________
Built Suzuki's shall reign Victorious.
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FullyZooked
az supporter
Joined: Mon Oct 25, 2010 9:01 am Posts: 1009 Location: Bendigo
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Posted: Tue Jan 18, 2011 6:17 am |
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JrZook wrote: FullyZooked wrote: It runs fine with the secondary disabled via unplugging the vacuum pot. This rules out airleaks.
I may just take the carb apart and learn how the insides work and what's stopping the fuel from passing through tHe secondary jet.
Best way to learn is to do I suppose. I'll keep has updated. Is it a mikuni? Still sounds like a blocked or non working fuel bowl vent solinoid. Its the larger circular one at the top of the carb. Double check its electrical connections or even go as far as wiring 12V directly to it and give that a go. pm'd
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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Posted: Thu Jan 20, 2011 9:37 pm |
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FullyZooked wrote: JrZook wrote: FullyZooked wrote: It runs fine with the secondary disabled via unplugging the vacuum pot. This rules out airleaks.
I may just take the carb apart and learn how the insides work and what's stopping the fuel from passing through tHe secondary jet.
Best way to learn is to do I suppose. I'll keep has updated. Is it a mikuni? Still sounds like a blocked or non working fuel bowl vent solinoid. Its the larger circular one at the top of the carb. Double check its electrical connections or even go as far as wiring 12V directly to it and give that a go. pm'd Pm'd back. Got it running yet? _________________ Lil Foot!
http://tiny.cc/gtsw1
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