Home > Td5 > Emissions Failure MOT |
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diesel_jim Member Since: 13 Oct 2008 Location: hiding Posts: 6086 |
Check that the MAF isn't faulty. That caused mine to smoke more than usual when it was faulty.
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6th Jul 2023 5:55pm |
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vipergreen Member Since: 06 Jul 2023 Location: Herts Posts: 7 |
Tested the Maf with a voltmeter and readings appeared right also cleaned the Map
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6th Jul 2023 6:10pm |
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barbel jim Member Since: 12 Dec 2012 Location: Northants Posts: 1418 |
Is it a genuine maf? As in Siemens vdo? I found the best way to clean injectors is to take them out, and change the washers and seals. I use millers eco max every fill, and was still surprised how much crud was on the nozzles. Cleaning them and refitting made a noticeable difference.
A lot of the remaps are just increased fuelling…. If you know who the tuner is try contacting them. They might sort for a small fee, or get it remapped by a reputable company. Unfortunately there’s alot of people who request rolling coal and popcorn limiters |
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6th Jul 2023 6:42pm |
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Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3392 |
Depending who mapped your TD5, some tuners disable the MAF. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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6th Jul 2023 6:59pm |
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landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5641 |
Change who does your MOTs. My tester doesn’t even poke the pipe in. 😂😂
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8th Jul 2023 6:50pm |
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vipergreen Member Since: 06 Jul 2023 Location: Herts Posts: 7 |
Exactly my thoughts, I’m just up the road from you in Hitchin.
Be great if you could share who you use by PM Would be very much appreciated |
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9th Jul 2023 6:17am |
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Screbble Member Since: 26 Apr 2015 Location: Lancashire Posts: 2076 |
I agree with much of what has been said.
My only thoughts are that as your Defender failed and it is recorded on the system, then the ‘new’ MOT Testing Station will probably be obliged to look more closely than it otherwise might? In any case, I hope for a positive outcome 👍 |
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9th Jul 2023 7:06am |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17305 |
I've never actually known a tester to look at the database before conducting the test, although it is likely that they'll see the failure report when they enter the result of the test.
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9th Jul 2023 8:30am |
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TexasRover Member Since: 24 Nov 2022 Location: Paris Posts: 1002 |
Don't want to be on someone parade... but when you have your mapping changed I doubt any of these tuners will necessary make sure or can guarantee the engine still passes the emissions requirements. Same with all the decatting business.
In the USA it's obviously a popular thing to do with zero consideration for emissions and a bunch of business and u-tubers have received letters from the EPA threatening with fines. |
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9th Jul 2023 8:39am |
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Screbble Member Since: 26 Apr 2015 Location: Lancashire Posts: 2076 |
Interesting. In my experience they look at previous advisories etc. in advance. Having said that, I am one of the group that has a pragmatic and reasonable MOT Tester who actually understands and has an interest in Land Rovers. I hope the OP’s story ends well 👍 |
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9th Jul 2023 9:24am |
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Chicken Drumstick Member Since: 17 Aug 2020 Location: Near MK Posts: 705 |
I would take it elsewhere. The smoke test should not involve full throttle!!!! |
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9th Jul 2023 10:24am |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17305 |
I guess it depends on the tester. If you were presenting it for a retest I would certainly expect them to. |
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9th Jul 2023 10:39am |
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Chicken Drumstick Member Since: 17 Aug 2020 Location: Near MK Posts: 705 |
Retest is very different. You get a set time period and they should only be retesting those items.
If presented for a brand new test, then the tester should be looking at it with fresh eyes and not pre-judging it. |
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9th Jul 2023 11:24am |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17305 |
My thoughts exactly.
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9th Jul 2023 11:54am |
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