Exhaust gas analyzer - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

 
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post #1 of 8 Old 01-30-2016, 10:53 AM Thread Starter
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Join Date: Mar 2011
Location: San Pedro, CA
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Exhaust gas analyzer

Looking to take a step up from a Gunson Color-tune and I found this:

Gunson Digital Gastester Vehicle Exhaust Gas Analyser | eBay

The price is right but I'm wondering if anyone has had any experience with this or any other similarly priced unit. Useful or a waste of time?
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post #2 of 8 Old 02-01-2016, 11:39 AM
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I use a heated wide band bung mount O2 sensor unit which seems to work well. A bung is welded into a spare header pipe which makes swapping on and off a KLR simple and non-fiddly.

It can be placed into a container with an attached sample hose and outlet to function as a separate test unit. I suppose the difference is in what form one prefers.

I used to have a 2-gas exhaust gas analyzer and access to 2, 4 and 5 gas but most were not portable. Portable 5-gas units such as in the Mac and OTC scanners are far out of my budget for the purpose of playing with motorcycles.

APSX D2 Digital Wideband O2 AFR Controller & Gauge & Sensor Kit (White & BLUE) | eBay
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post #3 of 8 Old 02-02-2016, 01:25 PM Thread Starter
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Thanks for the reply Normk. Got a question: I'd like to use this on more than one vehicle. From what you said and having looked at it, it looks like it can be made portable if I can create say an extension to the exhaust(s) that would put the O2 sensor in the exhaust flow?
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post #4 of 8 Old 02-02-2016, 07:38 PM
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Yes, the O2 sensor is heated so it doesn't need to be in a very hot exhaust location.

Since it uses a standard heated O2 sensor, replacements are easy and doesn't need any special tackle. That's why I went with this system.


Quote:
Originally Posted by Trundlebike View Post
Thanks for the reply Normk. Got a question: I'd like to use this on more than one vehicle. From what you said and having looked at it, it looks like it can be made portable if I can create say an extension to the exhaust(s) that would put the O2 sensor in the exhaust flow?
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post #5 of 8 Old 02-03-2016, 09:07 AM Thread Starter
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Perfect, thanks for the info. Looks like you saved me about $80.00.
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post #6 of 8 Old 02-03-2016, 11:48 AM
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Please keep me posted as to your experience with the unit. I'm finding it to be very useful for insuring that mixtures remain stable when experimenting with crankcase ventilation.

I'm also working with an internal float bowl modification and don't know how I would have patience without a direct indication, especially given how hard it is to read mixtures from plugs with the modern gasoline.



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Originally Posted by Trundlebike View Post
Perfect, thanks for the info. Looks like you saved me about $80.00.
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post #7 of 8 Old 02-04-2016, 10:41 AM Thread Starter
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Will do. I have a '68 Beemer that I put Mikunis on that needs help and I know the KLR is running rich somewhere. Hoping to come up with a way to use this while I'm riding so I can check them under load. Interesting comment about reading plugs. The KLR plug looks right but the carbon on the fender says different. Looking forward to this.
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post #8 of 8 Old 02-05-2016, 12:42 PM
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I put my gauge in the clear pocket on a tank bag so can see it when riding which is quite convenient. I use a two wire "flat trailer plug" to connect the heater circuit of the sensor to the bike's charger plug. Works a treat!

Please keep me in the loop of any gauge experiments.




Quote:
Originally Posted by Trundlebike View Post
Will do. I have a '68 Beemer that I put Mikunis on that needs help and I know the KLR is running rich somewhere. Hoping to come up with a way to use this while I'm riding so I can check them under load. Interesting comment about reading plugs. The KLR plug looks right but the carbon on the fender says different. Looking forward to this.
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