Surging idle . Video sample.
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Surging idle . Video sample.
Surging idle on a 1981 KDX 250. Any ideas where to start? Leaky intake boot?
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1981 KDX 250. Purchased February 2017. A work in progress
2010 Cervelo S1. I know, no engine, but it is a bike;-)
2010 Cervelo S1. I know, no engine, but it is a bike;-)
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Re: Surging idle . Video sample.
kind of sounds like it is out of fuel (i'll skip the Slingblade reference for now)
maybe air getting in
you are missing a vent hose
the caked up caulk on the boot does not look like a good sign for air integrity!
maybe air getting in
you are missing a vent hose
the caked up caulk on the boot does not look like a good sign for air integrity!
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Surging idle . Video sample.
To me it sounds like you have a clogged idle circuit passage
I would say you should bust that carb apart and clean the piss out of it with carb cleaner
+1 though for vacuum leak in the intake boot as well
I'd replace the gaskets anyways for poops and laugh
I would say you should bust that carb apart and clean the piss out of it with carb cleaner
+1 though for vacuum leak in the intake boot as well
I'd replace the gaskets anyways for poops and laugh
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Re: Surging idle . Video sample.
Thanks for the input!
I`ve cleaned the carb thoroughly so I`m pretty sure that`s not the issue. I`m leaning towards an air leak, through the intake boot more than likely. The boot is as far as I can tell the original from ``81 and is full of cracks. I`ve tried to fill the cracks as much as I can, but it seems I might have to bite the bullet and get a replacement part.
I`ve cleaned the carb thoroughly so I`m pretty sure that`s not the issue. I`m leaning towards an air leak, through the intake boot more than likely. The boot is as far as I can tell the original from ``81 and is full of cracks. I`ve tried to fill the cracks as much as I can, but it seems I might have to bite the bullet and get a replacement part.
1981 KDX 250. Purchased February 2017. A work in progress
2010 Cervelo S1. I know, no engine, but it is a bike;-)
2010 Cervelo S1. I know, no engine, but it is a bike;-)
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Re: Surging idle . Video sample.
Wrap it over and over with electrical tape and see if it changes. Beyond that, starter fluid spray will make er rev up!!
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Re: Surging idle . Video sample.
I`ll try the tape ;-)
Thanks!
Thanks!
1981 KDX 250. Purchased February 2017. A work in progress
2010 Cervelo S1. I know, no engine, but it is a bike;-)
2010 Cervelo S1. I know, no engine, but it is a bike;-)
- KDXGarage
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- Joined: 06:45 am Nov 01 2004
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Re: Surging idle . Video sample.
If you spray starter fluid on suspected areas, and if it has a leak, it will suck in the highly flammable fumes and she will run STRONG for just a second. Rev sound will change.
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Re: Surging idle . Video sample.
I took Katie (Yup, I named my bike Katie X) out for a ride today for the purpose of making some adjustments to the air screw. lo and behold , it made a significant difference! She runs much better. Not perfectly, but well enough for me to really enjoy riding!Jason wrote:If you spray starter fluid on suspected areas, and if it has a leak, it will suck in the highly flammable fumes and she will run STRONG for just a second. Rev sound will change.
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1981 KDX 250. Purchased February 2017. A work in progress
2010 Cervelo S1. I know, no engine, but it is a bike;-)
2010 Cervelo S1. I know, no engine, but it is a bike;-)
- KDXGarage
- KDXRider.net
- Posts: 14062
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Surging idle . Video sample.
Cool that you got it out for a ride.
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Re: Surging idle . Video sample.
Here`s the proof;-)
1981 KDX 250. Purchased February 2017. A work in progress
2010 Cervelo S1. I know, no engine, but it is a bike;-)
2010 Cervelo S1. I know, no engine, but it is a bike;-)