Idler screw?!?!? (look at the bottom!)

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bradartigue
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Re: Idler screw?!?!? (look at the bottom!)

Post by bradartigue »

That's a blocked port - it looks like there is nothing wrong with it. I still don't see the issue. Can you feel air being sucked into that port with the motor running?
CHMMX

Re: Idler screw?!?!? (look at the bottom!)

Post by CHMMX »

I don't know, I haven't tried. Is that supposed to be clear?
rlux4
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Re: Idler screw?!?!? (look at the bottom!)

Post by rlux4 »

Hey Cooper, is that you leaning against the fender in the picture labeled mysterious Abarth badge? How do you see over the dash?
Man, this joke ain't working if that is you.
Ron
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'82 2000 Spider: after 26 years between Spiders.
CHMMX

Re: Idler screw?!?!? (look at the bottom!)

Post by CHMMX »

No, that's my 7 year old cousin.

By the way, my dad asked if there's a float adjustment screw that is accessible without dismantling the carburetor
So Cal Mark

Re: Idler screw?!?!? (look at the bottom!)

Post by So Cal Mark »

no external float adj, you have to bend the float arm to change the level
CHMMX

Re: Idler screw?!?!? (look at the bottom!)

Post by CHMMX »

bradartigue wrote:That's a blocked port - it looks like there is nothing wrong with it. I still don't see the issue. Can you feel air being sucked into that port with the motor running?

What's it supposed to be like? Clear or sealed?????? And if it's supposed to be sealed, than with what?
rlux4
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Re: Idler screw?!?!? (look at the bottom!)

Post by rlux4 »

It's plugged CHMMX, sort of like a soft plug on your engine block. No air should be able to get past the plug. If the rust we see is all the way through, or if the perimeter isn't sound, it would leak air inward. Brad is asking if, when the engine is running, do you feel air going in at that port? If you do, you'd need to seal it somehow. You could even use a high temp HVAC sealer, it's like putty, or caulking.
Ron
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'82 2000 Spider: after 26 years between Spiders.
CHMMX

Re: Idler screw?!?!? (look at the bottom!)

Post by CHMMX »

ok, thanks. (by the way, that's cardboard in there)

P.S. Would that cause it to not idle?
rlux4
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Re: Idler screw?!?!? (look at the bottom!)

Post by rlux4 »

Cardboard? In the "What is this?" picture? Sure looks like a metal plug. Any way, you've no doubt seen all the posts about poor idling being attributable to loose carb mount bolts. This allows the suction of intake to suck too much air in. The same would be happening if that port is leaking. Try running the car and spray carb cleaner toward the port, if it revs up, it's leaking.
Ron
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'82 2000 Spider: after 26 years between Spiders.
CHMMX

Re: Idler screw?!?!? (look at the bottom!)

Post by CHMMX »

Would it work (temporarily) if i put a piece of tape over it?
rlux4
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Re: Idler screw?!?!? (look at the bottom!)

Post by rlux4 »

Yes, if that clears it up, Bingo! Even run the engine and plug it with a finger. Either way, if it improves, you've found the source. Then you could do a more permanent repair.
Ron
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'82 2000 Spider: after 26 years between Spiders.
CHMMX

Re: Idler screw?!?!? (look at the bottom!)

Post by CHMMX »

I tried that, it'll idle longer than before but it still dies. My dad tried putting his hand over the second barrel for a second and it hovered around 2000 rpm for a while but then started slowing down until it died again. He said one of the gaskets may have dried up because it was sitting for so long. How do I remedy this? By just running it?(and by the way, we only have a few hand tools)
rlux4
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Re: Idler screw?!?!? (look at the bottom!)

Post by rlux4 »

If it won't stay running on idle, what does it do if you pump the throttle? I mean either with the gas pedal, or by hand at the throttle linkage at the carb, run the rpm's up and down. (sounds like your air filter is off, keep your face away from over the carb.)
Ron
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'82 2000 Spider: after 26 years between Spiders.
CHMMX

Re: Idler screw?!?!? (look at the bottom!)

Post by CHMMX »

rlux4 wrote: what does it do if you pump the throttle?
The rpms go back up, and then it slows down and blahblahblah.

It stays idling for about a minute or so, before we put the piece of tape over that hole it wouldn't idle at all... I think...
CHMMX

Re: Idler screw?!?!? (look at the bottom!)

Post by CHMMX »

By the way, what rpm is it supposed to idle at?
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