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Author: Subject: UPDATED (FAILED) - MOT tomorrow, 1st in 7 years
bi22le

posted on 1/7/20 at 07:19 PM Reply With Quote
UPDATED (FAILED) - MOT tomorrow, 1st in 7 years

I have checked everything that I can. Hopefully it will be ok. I'll be surprised if it passes with no issues at all. I will not be surprised if it fails!

Hopefully they will let me make tweaks, it's just a mainstream Mr Clutch so we will see. I recon the headlights point in wildly wrong directions but they can just be adjusted on site. I also have no idea if the Speedo works since I rewired everything.

[Edited on 1/7/20 by bi22le]

[Edited on 2/7/20 by bi22le]





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adithorp

posted on 1/7/20 at 07:56 PM Reply With Quote
Speedo isn't part of the MOT.





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bi22le

posted on 1/7/20 at 08:44 PM Reply With Quote
That's good to hear but different to what this website suggests where operation is a major.

https://www.motester.co.uk/mot-test-of-instrument-panel/





Track days ARE the best thing since sliced bread, until I get a supercharger that is!

Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1

Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I

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adithorp

posted on 1/7/20 at 09:48 PM Reply With Quote
Sorry, Yes it has to be present, not visably knackered and illuminate. As for ooeration... It's not driven other than in and out of the test lane so generally not fast enough to read doing that and there's no way to check calibration. In 40 yes of taking cars for tests every weekdsy, I've yet to see one fail other than on illumination.





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Big T

posted on 2/7/20 at 09:30 AM Reply With Quote
How are you keeping? Nice to hear youíre getting the car on the road. I have an excellent MOT man local to me if you ever want a recommendation. Very accommodating to things that are a little ďdifferentĒ.

Regards the speedo, I had a fail on my speedo once, this was because my odometer was the same as my last mot and the system automatically refused it. All I did was turn my satnav in which indicated speed and it got an instant pass.

All the best with your test!

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overdriver

posted on 2/7/20 at 12:30 PM Reply With Quote
I can't see the speedo if I have the tonneau covering the passenger side whilst driving. Consequently, I have a speedometer app on my mobile which I can have in a more visible position thereby keeping me legal and advised when I need to observe speed limits....... which is always of course! ''

Michael.

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bi22le

posted on 2/7/20 at 05:21 PM Reply With Quote
Well it passed everything but emissions. Which shocked me considering I have CO 3.5%, 1200ppm limits.

The CO was over 6%. I think it's due to a number of things and I would like others to share their thoughts of what will bring it down.

New plugs
Fuel cleaner
New fuel
A good blast ( it covered about 2 easy miles on the way to the centre after sitting still for 4 years)


Anything else?





Track days ARE the best thing since sliced bread, until I get a supercharger that is!

Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1

Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I

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steve m

posted on 2/7/20 at 06:09 PM Reply With Quote
If the fuel is 4 tears old, im surprised it even burnt!

I would be inclined to drain the whole fuel system, but keep the fuel,
run a couple of gallons of fresh fuel through the system a few times, drain that, and add it to the old fuel

fill up with fresh fuel, and give it a good blast

And next time you fill up, you will have the old stuff to put in

New plugs filters etc, would be a good thing also

steve





Thats was probably spelt wrong, or had some grammer, that the "grammer police have to have a moan at




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adithorp

posted on 2/7/20 at 06:55 PM Reply With Quote
What was the HC reading? Is it carbs or injection? 6% is very rich (at least 4x what it should be) and if it wasn't burning the fuel because it gone off, then you wouldn't have that but you would have high HC from the unburnt fuel.





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gremlin1234

posted on 2/7/20 at 07:24 PM Reply With Quote
1 yes new fuel.
2 check for a stuck 'choke' control,
3 clean/vacuum the air filters.
4 and as you already said, try and run/thrash it a bit too

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bi22le

posted on 2/7/20 at 07:56 PM Reply With Quote
Thanks for the responses.

It had fresh fuel, a couple of weeks old anyway. I'll get some same day stuff in there this time.

It had a new fuel filter.

HC was 507 ppm limit 1200ppm
CO was 6.83% limit 3.5%

Last time I had it MOT I was using it a lot. That time (8 years ago but on the same map) it was:

HC 63ppm
CO 0.78%

A massive increase, you can see why I was not concerned with the emissions.

I have ordered some redex and new plugs. I'll give it a good wa up and thrash on the way there, hopefully Monday.





Track days ARE the best thing since sliced bread, until I get a supercharger that is!

Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1

Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I

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Big T

posted on 2/7/20 at 08:02 PM Reply With Quote
I have had it before when Iíve given the car a super good thrashing before taking it in and itís passed. I suspect that I may have problems with my weekend car come MOT time with emissions being high, but we will see what happens!

My thoughts would be go the long way to the test centre, rather enthusiastically and see what happens.

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CosKev3

posted on 2/7/20 at 08:07 PM Reply With Quote
I cant see the Co being that high just cause it needs a blast tbh,its over fueling massively.
You are heading towards bore wash territory with it that high,so check your oil doesn't smell of fuel.
If its injection I would say it will be the temp sensor is knackered,or unplugged.

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bi22le

posted on 2/7/20 at 08:45 PM Reply With Quote
quote:
Originally posted by CosKev3
I cant see the Co being that high just cause it needs a blast tbh,its over fueling massively.
You are heading towards bore wash territory with it that high,so check your oil doesn't smell of fuel.
If its injection I would say it will be the temp sensor is knackered,or unplugged.


I'll.check these, thank you. It is FI on quad bodies. OMEX 710.

I'll plug into OMEX and see if it picks up a temp.





Track days ARE the best thing since sliced bread, until I get a supercharger that is!

Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1

Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I

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adithorp

posted on 2/7/20 at 09:54 PM Reply With Quote
Well in that case 2 possibilities come to mind (for starters) if the temp sensor is ok...

It could be the injectors being s bit gummed up (from the old fuel) and dribbling fuel when closed so over fueling. I've got lucky clearing exactly that by running on a very strong mix of fuel and injector cleaner (Forte)

Or if it closed loop (think I remember sensor from your exhaust thread) fueling, the lambda could be fouled/faulty or an air leak between head and lambda, so it reads extra O2 the trys to compensate and runs rich.
Also worth checking for air leaks on the inlet side.





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Cannonball

posted on 2/7/20 at 10:19 PM Reply With Quote
I had an old v8 that was off the road for nearly twenty years and it failed miserably on emissions. Turned out that the fuel return in the tank had clogged up with crud. When I got it cleaned out it sailed through the test.
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snapper

posted on 3/7/20 at 09:05 AM Reply With Quote
It will be carbed due to emission limit stated in V5
Itís most likely to be old fuel varnish in the jets.
What carb type?
Need to clean the carbs with carb cleaner and maybe take apart and use carb cleaning brushes.





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rusty nuts

posted on 3/7/20 at 09:40 AM Reply With Quote
If you have started the engine occasionally in the time itís been off the road and not got it up to temperature then itís likely to be the oil is contaminated with fuel as already suggested if the oil hasnít been changed. Check the air filter for blockage. Did the testing station get it up to temperature? Did they go through the correct procedure?
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rusty nuts

posted on 3/7/20 at 09:44 AM Reply With Quote
quote:
Originally posted by CosKev3
I cant see the Co being that high just cause it needs a blast tbh,its over fueling massively.
You are heading towards bore wash territory with it that high,so check your oil doesn't smell of fuel.
If its injection I would say it will be the temp sensor is knackered,or unplugged.


When I was testing it was a regular thing for cars to fail on emissions, when retested after an Italian tune up they would sail through the test

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bi22le

posted on 3/7/20 at 09:08 PM Reply With Quote
It is fuel injection, not carb. It was very warm and ready before testing, just had not covered many miles.

I fuel was drained out the tank before laying up but no engine prep was done. Fresh oil and filters, I tried the 2nd test with no filter at all to check it was not causing to much restriction.

I think some redex and a good blast will sort it. I will check key sensors to.

I have a retest at Monday lunch time, I will take a very very long route round and hope the redex does some good.





Track days ARE the best thing since sliced bread, until I get a supercharger that is!

Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1

Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I

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CosKev3

posted on 5/7/20 at 07:36 AM Reply With Quote
quote:
Originally posted by rusty nuts
quote:
Originally posted by CosKev3
I cant see the Co being that high just cause it needs a blast tbh,its over fueling massively.
You are heading towards bore wash territory with it that high,so check your oil doesn't smell of fuel.
If its injection I would say it will be the temp sensor is knackered,or unplugged.


When I was testing it was a regular thing for cars to fail on emissions, when retested after an Italian tune up they would sail through the test


As high as 6.3%?

That's massively high

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CosKev3

posted on 5/7/20 at 07:37 AM Reply With Quote
quote:
Originally posted by snapper
It will be carbed due to emission limit stated in V5
Itís most likely to be old fuel varnish in the jets.
What carb type?
Need to clean the carbs with carb cleaner and maybe take apart and use carb cleaning brushes.


No,plenty of old injection cars are pre-cat and only need to pass 3.5%Co

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MikeRJ

posted on 5/7/20 at 09:31 PM Reply With Quote
quote:
Originally posted by rusty nuts
quote:
Originally posted by CosKev3
I cant see the Co being that high just cause it needs a blast tbh,its over fueling massively.
You are heading towards bore wash territory with it that high,so check your oil doesn't smell of fuel.
If its injection I would say it will be the temp sensor is knackered,or unplugged.


When I was testing it was a regular thing for cars to fail on emissions, when retested after an Italian tune up they would sail through the test


That's most often down to an aged cat converter not working well until very hot, doesn't sound like the OP has one.

What fuel control strategy is it using? If Alpha-N (common on throttle bodies) then it only takes a minor misadjustment of the throttle position sensor to really screw up the mixture. Other wise the other common issues have been mentioned; coolant temp sensor and stuck fuel pressure regulator.

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bi22le

posted on 5/7/20 at 09:41 PM Reply With Quote
So I managed to get some time in the garage today after riding Motocross bikes all yesterday. I have done a few things to help and check.

I have added redex and run the car for about 40 mins. I did not drive it

There was a drilled holes directly opposite the lambda sensor in the exhaust, I have patched that up.

I plugged into the OMEX ECU and checked that the lambda, air temp, throttle pos, and water temp are all working which they were.

No smell of petrol in the oil

Hopefully I'll receive my new spark plugs and can change them.

My battery was not charging so only had about 10V while doing the last test, I have fixed this so maybe things will run better with more voltage in the system.

I will take it for a long drive before the test tomorrow. I will keep you all posted.





Track days ARE the best thing since sliced bread, until I get a supercharger that is!

Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1

Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I

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sebastiaan

posted on 6/7/20 at 07:18 AM Reply With Quote
quote:
Originally posted by bi22le
There was a drilled holes directly opposite the lambda sensor in the exhaust, I have patched that up.



If it actually is running closed-loop then plugging that hole will have fixed it. 6.3% CO means it was running around 20% too rich.

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