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 Weber 34/34 throttle plate stays open?
#808563
04/28/07 01:38 AM
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Joined: Jan 2007
Posts: 8
OP
Need a Spot
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My engine (22R) has been racing when I stop to idle for a while now on and off. ('87 Toyota Pickup) It happened when I pulled in front of my garage today coming home from work, so I took the cap off and the throttle plate was full open. That's not supposed to happen, right? What do I do? If I tap the gas it will usually go back down to regular idle until the next time I come to a stop. If I rev the engine up a couple times it usually helps a little for it not to happen again, but also give a few pops out the exhaust as I'm doing it. Come to think of it, it usually gives a small pop as I'm shifting when the engine's cold too.
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Re: Weber 34/34 throttle plate stays open?
[Re: Karhu]
#808564
04/28/07 02:40 AM
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Joined: Jan 2007
Posts: 241
Wheeler
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I would check for a kinked cable or similar problem, also try some sort of lube on the butterfly shaft. Basically to me your problem sound like dirt etc somewhere in the linkage, or even check to make sure your peddle isn't hanging up on the carpet or peddle pivot needing some lube.
Keep the Shiney Side up. Support our troops.
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Re: Weber 34/34 throttle plate stays open?
[Re: canuck]
#808565
04/28/07 03:55 AM
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Joined: Jan 2007
Posts: 8
OP
Need a Spot
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I don't think the cable is jamming... I can be coasting to a stop in 2nd or 3rd gear, and then when I put the clutch in and brake to actually stop, the rpms shoot way up. As for the butterfly, today when I looked at it I poked it with my finger to see if it would close up with a little help, and it just sprung back open every time I pushed it down.
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Re: Weber 34/34 throttle plate stays open?
[Re: Karhu]
#808566
04/28/07 06:55 AM
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Joined: Jul 2002
Posts: 1,399
Body Damage is Cool
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Sounds like either your choke isn't working properly or the cold idle is too high. If the cold idle is too high it can catch at inopertune times. <img src="/forums/images/graemlins/cheers.gif" alt="" />
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Ported Intake & Weber38mm Carb
LCE Header & 2.25in Exhaust
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2011 FJ Cruiser - SOLD
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Re: Weber 34/34 throttle plate stays open?
[Re: Karhu]
#808567
08/12/07 06:27 PM
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Joined: Aug 2007
Posts: 1
Need a Spot
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My engine (22R) has been racing when I stop to idle for a while now on and off. ('87 Toyota Pickup) It happened when I pulled in front of my garage today coming home from work, so I took the cap off and the throttle plate was full open. That's not supposed to happen, right? What do I do? If I tap the gas it will usually go back down to regular idle until the next time I come to a stop. If I rev the engine up a couple times it usually helps a little for it not to happen again, but also give a few pops out the exhaust as I'm doing it. Come to think of it, it usually gives a small pop as I'm shifting when the engine's cold too. i think the screws holding the secondary throttle plate to the shaft are either broken or loose..... i just repaired one, emall me and i'll send pics of the repair john_h84088@yahoo.com-
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Re: Weber 34/34 throttle plate stays open?
[Re: johnch]
#808568
08/13/07 03:28 AM
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Joined: Apr 2005
Posts: 525
Rock Warrior
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are you talking about the throttle plates or the choke plates?
assuming your carb has a choke, you won't see the throttle plates unless you're looking down the barrel of the carb.
msg - '87 xtracab
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Re: Weber 34/34 throttle plate stays open?
[Re: yodta]
#808569
08/13/07 03:34 AM
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Joined: Jan 2007
Posts: 8
OP
Need a Spot
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Yes, looking down the barrel of the carb -- the throttle plates.
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Re: Weber 34/34 throttle plate stays open?
[Re: Karhu]
#808570
08/13/07 06:10 PM
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Joined: Apr 2005
Posts: 525
Rock Warrior
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can you post some photos.
that's a strange problem indeed.
can you tell if it's stuck wide open, or just a little open?
as the other guys say, this could be the cold idle cam/choke (if equipped) set incorrectly causing this.
tried carb cleaner and lube?
and if recently worked on, sometimes the throttle shaft nut if it's too tight can cause binding.
msg - '87 xtracab
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