It's actually somewhat cheaply made and delicate but it seems to work. Read the instructions and it should be good, Reviewed in the United Kingdom on 31 July 2018, As people have said, its a little bit fragile but it does do what its supposed to do. Unit has potential for the occasional use, for instance a tweak just before MOT, but build quality is suspect for more sustained use, especially the sticky pads holding the pump on, and I think the short sample pipe has the effect of allowing too much exhaust gas heat to get into the pump - many classics have quite high exhaust temperatures at the tailpipe so it could be something to bear in mind when buying this tester. I won't claim it's a "high quality" tool. Are you sure you want to delete your template? I have read some people have set theirs to 3.5% CO but I cant remember if those were late CIS cars with O2. Pelican Parts Catalog for Porsche, BMW, Mercedes-Benz, MINI and More. [xk] Gunson Colortune or Gastester - XK - Jag-lovers Forums 4. I did a search, and it seems that most members have used the Gunson for MFI or CIS, but not Motronic. Disconnect your O2 Sensor so it won't correct your mixture for you and then adjust your air mixture accordingly. Gunson Gastester questions - Pelican Parts Forums I had a Gunson for awhile. Posts: 5,668. Reviewed in the United Kingdom on 14 January 2018. Using Gunson's Gas Tester to test CO% on a 5KW Chinese diesel heater.It runs in a 50% mixture of cooking oil (etc) and diesel.So.follow-ups and more things. May 1, 2010. timing 35 total. I am having problems getting 7% CO at 2500 rpm. I set CO level to 2,4%, and in mot it was 2,77%. I need this Gastester to calibrate CO of my old classic car and as described this Unit does not need any filter or special parts to use it , and it's compact light weight and easy to use . Reply OP Posts Only. gastester professional - ManualZilla Instructions for use Note: Place the main body of the instrument away from the exhaust gas stream. I know you have a Gunson, but the modern and more scientific way to set up a 911 or any car is with a modern wideband oygen sensor system. Gunson's Gastester review | FerrariChat I set my 930 CIS to 3% at 900 rpm. About this item Content includes: Gas tester instrument including Calibrates in air, no moving parts to wear out No filters to change Accurate to 0.5% C.O measurement at 15-25C Posted 22 May 2011 - 09:35 AM. Customer Reviews, including Product Star Ratings, help customers to learn more about the product and decide whether it is the right product for them. I don't know enough about MFI to start playing with it. It also analyses reviews to verify trustworthiness. I have a similar annoying stumble at about 3200 rpm on my 69S. GASTESTER - Gunson. Follow steps below: Installing to windows 10 using old product key. My next engine will receive AFR sensors on both banks for sure. Gunson G4125 Exhaust Gas Analyzer + Audi 80 - YouTube I know to keep it out of a draft, but it has been in the 20's and 30's here today. Click Customise Cookies to decline these cookies, make more detailed choices, or learn more. We use cookies to improve your experience on our website. Pulled the exhaust port test plug at the front of the Cat (my car is an 83 with O2 sensor system intact). In the case of the Gunson's Gastester, that consists of leaving it to warm up for 15 mins with the probe in the normal atmosphere (i.e. Anyway, product performed as it promised. I think it was set whilst the throttle linkage rod was sticking part way open. Hook up this Gastester at home and you can check and tune your engine accordingly. By that I mean I would check it yearly or whenever I made changes that might affect the mixture. It's actually somewhat cheaply made and delicate but it seems to work. Is this a worth while investment, or just smoke and mirrors? The Gunson is set to a background of 2.0%. You can edit your question or post anyway. It seems easier to run it externally through the window. Andy, thanks. Going to try and finally get my mixture right tomorrow. Using Gunson Gastester on 74 2500M - Page 1 - PistonHeads Gunson Gastester - Pelican Parts Forums PDF GASTESTER - GunsonShop.com These are way more accurate. https://forums.pelicanparts.com/porsche-911-technical-forum/1060737-my-air-fuel-gauge-replace-clock-2.html, Pelican Parts Catalog for Porsche, BMW, Mercedes-Benz, MINI and More. I have my Gunson Gastester now and wanted to try it out today, but I am sad to say I am one confused puppy. Pelican Parts Catalog for Porsche, BMW, Mercedes-Benz, MINI and More. It is a simple TCD that calculates %CO. 1 - Pole Shift Survival Information. Hook up this Gastester at home and you can . Gunson`s Gastester Professional Handbook - aroundcelestial AEM used to supply different faces with their gauges. Proper calibration is key - this isn't a toy, you have to think about how you are using it. I am using a Gunson gastester. 0.77% is too low though. Only LM1 on Motronic here. Please make sure that you've entered a valid question. I am not to happy with its performance now. Renaldo. Disabling it will result in some disabled or missing features. PDF Gunson Ltd. 1991 - GoMoG We will inform you when the product arrives in stock. In use, the device is a bit finicky as it require a calibration in air before testing the exhaust followed by a revalidation of the cal. Gunson 4125 Gastester Digital - Frost Auto Restoration Techniques I have the Gunson Gastester. Because of that slow response, it's somewhat difficult to accurately monitor the A/F while driving. Gunsons Gastester | Ducati.ms - The Ultimate Ducati Forum Gunson Gastester. Gassing Station | TVR Classics | Top of Page | What's New | My Stuff, 1998 to 2023 CarGurus UK Limited, All Rights Reserved, PistonHeads is a registered trademark of CarGurus Ireland Limited, CarGurus UK Limited, c/o Legalinx Limited, 3rd Floor, 207 Regent St, London W1B 3HH, United Kingdom. Were further adjustments necessary after comparing the Gunson results to the ''lifting pin'' method? I find my 308 2v (empty cats) runs idle of 15.8 and then runs highway of 14.2 (When I set the idle to 14.7 my running a/f ratio was in the low 13s so it is not even across the range), (You must log in or sign up to post here. 10 Minutes initializing is normal. (2) Place the assembled Gastester on aconvenient flat surface close to the vehicle's exhaust pipe outlet. All rights reserved. They cost about $200, but often less, and are accurate enough for this purpose. Now showing at 1.8% after an AFM change and will get booked back in for MOT next week! When connected to running car battery display goes off. I'd think the OP could make an adapter for his test port and, as long as it's properly snug and well-fitted, not suffer any ill consequences. When it was tested, the expensive smog station equiptment came back with results within .01 of the Gastester. TIA . I tried tuning the MFI without much improvement. Place the Gastester on a convenient flat stationary surface close to the vehicle's exhaust pipe outlet. CO levels in exhaust gases are not only important from an environmental point of view but also are indicative of the state of tune of your engine. If you agree, well also use cookies to complement your shopping experience across the Amazon stores as described in our Cookie Notice. If the CO reading is above 4.5 per cent, the vehicle will fail the test (3.5 per cent for cars first used between August 1, 1986 July 31, 1992). The unit MUST be allowed plenty of time for the detector temp to stablize so that a uniform baseline can be established. Sorry, there was a problem saving your cookie preferences. But maybe in my case its just luck and I obtained a proper functioning one out of many from the factory, who knows. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. Anyone have experience with the Gastester? | Ducati Monster Motorcycle Gunson Manuals Measuring Instruments Gastester G4125 Handbook Gunson G4125 Handbook Gas tester, digital exhaust co analyser with pulse pump Also See for G4125: Handbook (7 pages) , Instructions (2 pages) 1 2 Table Of Contents 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 page of 20 Table of Contents Bookmarks Advertisement Quick Links x 10 Minutes initializing is normal. It says in manual that it mnay require 30 minutes for warmup. Helpful. Cheaply Made, Does its Job but you need to follow the instructions. Part of MOTORSPORT NETWORK. USAG Start 516 Roller Cabinet - 5 Drawers, Windscreen, Glass, Mirror & Auto Lens Repair, VHT Flat Black Flame Proof Very High Temperature Paint (312g), Kroon-Oil Classic Monograde SAE 50 Engine Motor Oil (1L), Griot's Garage Foaming Poly Gloss 35 OZ - 1035ml, USAG Torque Wrench with Reversible Ratchet 40-200 Nm, USAG Torque Wrench with Reversible Ratchet 5-25 Nm, How To Protect Your Vehicle Against Ethanol By Using Ethomix. Content on ducati.ms is generated by its users. It says in Bentley to measure the CO with O2 sensor unplugged - OK, (sheepishly I ask) where exactly do I unplug my O2 sensor from? Better used for stationary testing. I highly recommend the Gunson Gastester to those who can read, understand, and follow the user manual. I have read on this board that 7% CO stationary at 2500 rpm and 4% at idle are proper values. If the CO reading is above 4.5 per cent, the vehicle will fail the test (3.5 per cent for cars first used between August 1, 1986 - July 31, 1992). Thanks Classics first used after August 1, 1975 get their exhausts probed at MoT time. ). Report abuse obie1somebody. First off, any mfi adjusment for part load while the car is stationary cannot be taken as per the guidlines in the book. gunsons gas tester | Technical matters | Back Room Forum | Honest John If I decide to get one it would be that one. Read the instructions and follow them to the letter. BTDT, sold that. One person found this helpful Helpful Report Started using it, readings compared well to my old Crypton Motorscope, but within a few minutes the sticky pads holding the pulse pump to the casing started to unstick, then the pulse pump failed. beware that the manufacturer has an odd contract with Amazon, and WILL NOT entertain technical enquiries direct - everything has to go through Amazon - apparently units bought elsewhere have normal tech support. Gunson G4125 Gastester - checking exhaust CO content - YouTube When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Bump. I finally started from the basics and did a compression test and found 2 bad holes. 138 months Thursday 22nd December 2011 . I have an AEM broadband air/fuel gauge in my 1982 sc and it is very helpful in allowing me to see and adjust idle mixture, but in addition it provides info on mixture at cold start up and to see the mixture transition as the engine/ O2 sensor (the one that drives the cis system) warms up. not next to a running car), and then setting the CO level Gastester is used for the testing and setting of all carburettors (petrol, leaded or unleaded) and petrol injection systems on any vehicle. The MOT numbers for CO at 2000rpm is too low at 0.124% to 0.265% which could be causing the high HC. For a better experience, please enable JavaScript in your browser before proceeding. Just leave your valid email address below. Adjusting the Carburettor with the Gunson G4125 - YouTube Let us know what you find. gunson gastester experts please - Pelican Parts Forums I have been using a Gunson for 10 years and have burned through 3 units. Connect the red and black clips to the vehicle's battery (red . Purchased the gunson exhaust tester and went through all the usual tips before using. Easy to switch out or even print your own on say vinyl sticky label paper. The Gunson is set to a background of 2.0%. 1.0 out of 5 stars Arrived in non-working order . I'm going to try running it from a battery charger and leave it to warm up for 20 to 30 mins which will hopefully help. Make sure the pipe has a steady flow back to the unit. GASTESTER GASTESTER Digital Exhaust CO Analyser with Pulse Pump G4125 Supplementary Information www.gunson.co.uk. I could only get this to work when connected to separate 12v battery. Gunson gastester mk2 instructions - United States Examples User Examples Reviewed in the United Kingdom on 5 March 2014. f 1. I had origianlly thought about the gunson but felt that its claimed accuracy of =/- .5% [ in lab settings] was going to bite me in the butt. This takes a good 30 minutes. Thanks for the reply Steve. L400RAS, on May 22 2011, 10:27 AM, said: Don't add any readings to the baseline figure. I remember reading somewhere on the internet about the setup when I was looking into it for ours. This page works best with JavaScript. Gunson G4125 Gastester Digital FerrariChat.com has no association with Ferrari S.p.A. 2023 FerrariChat. Can't vouch for the accuracy but the steps you listed are what I do. 5. quite a pain to calibrate and is easily broken. If the device is to be used on a car equipped with cars, you would need to check to see if the exhaust would need to be sampled prior to the cats. I won't claim it's a "high quality" tool. 2. I know to keep it out of a draft, but it has been in the 20's and 30's here today. Yes I did warm up both the car and the gunson before use. My understanding is, if it reads 1.8 that is the actual CO. same for midrange @3000 rpm. The Gastester runs about $170, and the Colotune about $70. JavaScript is disabled. Switch off the engine temporarily while making connections. It'll drift with time but I don't bother tweaking it. I have a couple of question about basic use of the LM-1. How accurate is a Gunson Gastester? - The Lotus Forums Gastester or Colortune? I bought a Gunsons Gastester years ago and it's been sitting on a garage shelf since then so i decided to test the MGB - just out of interest. Come join the discussion about performance, modifications, troubleshooting, superbike racing, maintenance, and more! Will it be alright to use after a 30 minute warmup. Guys, do any of you have any experience using one of these? Delivers accurate CO measurement to 0.5% at 15 to 25C with adjustable calibration control for precise setting. Be careful, the connector breaks easily. It took me a while to crack the wallet open for the tool, but after logging a few runs I really got accurate readings on what my chip was doing. In this video I use a Gunson Gastester to check the exhaust CO content on a 1972 Mercedes 350 SL. Condensation will block the tube so keep and eye on it. If you can't log AFR data on the fly you really aren't seeing what your DME car is doing; idle test is only 1/10th of the picture. Personally, I always like to use a standard in order to base any thing against Just to make sure, is the 7-8% part load setting JW is referring to under load or standing still ( I measured mine under load, with the gunson on the passengers seat). 3. If setup properly before usage it gives quite accurate results. People dont like to listen your car idling for an hour!! 4 Gastester is an exhaust gas analyzer that works on the "Hot Wire" or "Thermal Conductivity principle. Thanks! It cannot be disturbed one centimeter or else the reading will go way out of calibration. Tool works fine. Did you read the manual that came with the gas tester? Posted October 19, 2013 I always have problems with the MOT emissions idle test for my 1986 Lotus Esprit S3. Bought one on eBay it arrived yesterday. Only thing I would improve is to get reading faster. Are there any ambient temp limits on the using the Gunson? Accurate to within half a per cent, the Gastester can save you money on petrol, too. Visit http://www.frost.co.uk for more information or buy the products. INSTRUCTIONS FOR USE (1) Ensure that the car is thoroughly warm as mentioned above, that it is parked in the open air, with the handbrake applied, and with the engine running. Pakokaasuanalysaattorilla st. fault code reader obd11 gastester professional - Gunson. You'll need at least 2.5 on the meter to have the car running right. Do I need to also buy the fancy tailpipe sensor holder and if so is that going to fit in the curved output pipe of a Dansk muffler? Buy Spanish Food Online at Spanish Passion Foods & Wines Ltd. Order Tapas Home Delivery Online Tapas Fusion. Location: Fortuna, CA. The Gastester allows you to make that measurement at home without having to take it to a shop with a gas analyzer. Classics first used after August 1, 1975 get their exhausts probed at MoT time. Gunson Gastester - Pelican Parts Forums The tail pipe bung facilitates set-up for the LM1, you run the O2 sensor from the bung you need to route the harness into the cabin. GASTESTER. Aug 6, 2005 Some one at work was asking me about the Gunson Gastester the other day and wanted to know if I had used one. Figure I would rather 'modify' the dansk. INTRODUCTION Carbon monoxide (chemical symbol CO) is a colourless, odourless, but extremely poisonous gas that is present in the exhaust gas of petrol-engined vehicles.The amount of carbon monoxide in the exhaust gas is an accurate indicator of the airlfuel mixture EN. Fri 14 Apr 2006 19:43 gunsons gas tester - tr7v8 I've got the digital one & it's great. But to be honest Im hoping once I get the mixture set it will be a set-and-forget thing. You can change your choices at any time by visiting Cookie Preferences, as described in the Cookie Notice. On the Lost Coast near the Emerald Triangle. 0% Finance available on baskets over 99 with PayPal Credit. Now you turn the mixture screw and have to wait at least 5 min until you get accurate reading. FAUL T CODE READER. Heating time is quite long, about 30 min. Using Gunson Gastester on 74 2500M.