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New Members / Re: new member
« Last post by madasafish on October 15, 2018, 05:45:14 PM »
Welcome  :o
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Honda Jazz Mk2 2008-2015 / Re: Battery going flat?
« Last post by culzean on October 15, 2018, 05:22:46 PM »
I have never had either a MK1 or MK2 Jazz battery even look like going flat on me,  so I don't think small battery size is the problem - modern EFI cars start a lot easier than they used to and modern alternators are better at charging battery on short runs and moder control circuits control the charge voltage better, but the big killer of batteries is keeping them in a low state of charge (<80%).   But I don't leave a battery on a car longer than 5 years, after that they are on borrowed time.   Especially with a CVT you need to fit the best battery you can afford as if you have battery problems there is no way of starting the car except the battery or a jump start.

failing batteries typically show large downward spikes on the trace.

As a battery gets older its internal resistance increases, that means that when you draw starting amps (say 200 amps) from a new battery the voltage at terminals may drop to 9 volts,  as battery ages the terminal voltage drops when current is drawn and at 5 years old it may be nearer 6 or 7 volts.  That is why some garages pretend to give a battery a load test,  but their kit will not draw enough current to get meaningful results.

As John Ratsey says,  just get someone to watch headlights dim ( may not work with LED bulbs though) - like an oscilloscope but cheaper......
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Honda Jazz Mk3 2015 - / Re: Tyres for 16" wheels
« Last post by culzean on October 15, 2018, 05:14:57 PM »

Michelin take some beating, expensive but do wear well.


Michelin do wear well but you sacrifice some grip to get the wear, I used to get Michelin because I was doing over 25K a year,  but find Avons much grippier ( and don't need long wear so much these days, anyway I am boycotting French and German stuff ).
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Honda Jazz Mk3 2015 - / Re: Tyres for 16" wheels
« Last post by sparky Paul on October 15, 2018, 05:02:26 PM »
I just fitted a pair of Cooper Zeon CS8 on the front, balanced easy, quiet and seem decent enough tyres.

Michelin take some beating, expensive but do wear well.

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Honda Jazz Mk3 2015 - / Re: Tyres for 16" wheels
« Last post by VicW on October 15, 2018, 03:47:00 PM »
I have recently fitted Toyo Proxes to my Jazz and I am very pleased with their all round performance and at a good price too.

Vic.
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Honda Jazz Mk2 2008-2015 / Re: Weather conditions
« Last post by John Ratsey on October 15, 2018, 03:01:11 PM »
Well I ran the Yorkshire 10 Mile in atrocious conditions yesterday in almost exactly the same time is in lovely warm summer type conditions last year. I guess I don't run fast enough for the wind and rain drag to affect me, ha ha. The chief difference was fighting off hypothermia at the end due to be wet and how cold it was.
That reminds me of a half marathon a few years back when I was running on the highest part of the course into a north wind with driving rain. Not pleasant!

The underlying problem of wind is that the resistance is proportional to the square of (vehicle speed +/- wind speed) so driving at 50 mph into a 20 mph wind is the equivalent of driving at 70 mph into still air with v squared = 4900. Driving at 50 mph, on the other hand, with a 20 mph tail wind is the equivalent of driving at 30 mph in still air with v squared = 900. In that calculation the benefit of the tail wind is less than 1/5th of the loss due to the head wind. Cycling concentrates the mind on the wind effects - even worse than rain.
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Honda Jazz Mk1 2002-2008 / revs
« Last post by dave456 on October 15, 2018, 02:56:25 PM »
Hi members i have a honda jazz 1.4 se cvt i have had problems with now for some time i have got a miss fire at 1,000/1.500 back again change plugs change coils add a new egr valve and vibration at tick over as well. today rev it up it got 5.000 rmp would not go no further if you tried it would to cough and sputter.just wonder if is now the throttle body i am getting fed up now throwing money at it any suggestions  this is the worst jazz i have had dave 
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New Members / new member
« Last post by ford ultima on October 15, 2018, 02:29:22 PM »
hi everyone had my jazz for 2years now loverly  car so relierbal speak to you soon sorry about the spelling .age related :'( bye for now. very good site great imformation.
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Honda Jazz Mk2 2008-2015 / Re: Battery going flat?
« Last post by John Ratsey on October 15, 2018, 02:06:12 PM »
When I have a nice cold morning and I can put a high load onto the battery, I'll hook my oscilloscope across the terminals (with a 20sec timebase) and see what happens during a start - failing batteries typically show large downward spikes on the trace.
There's no need to get so scientific: First put the headlights on and see if they go dim when the starter motor is in use.
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Honda Jazz Mk2 2008-2015 / Re: Battery going flat?
« Last post by SteveOne on October 15, 2018, 02:01:26 PM »
Thanks nigelr, I think my Varta battery is probably the original.  It's been OK since I recharged it and the car starts easily. I don't use the cabin lights anymore, and I wouldn't be happy listening to the radio with the engine off - such as I might do when waiting for someone at the station.
I was told that the Jazz battery was physically small before I bought one, I'm glad I didn't get the Mk3 which has even more electical load, including stop/start.  In fact, the more I hear about the Mk3 - including DMFs - the happier I am with the Mk2.
When I have a nice cold morning and I can put a high load onto the battery, I'll hook my oscilloscope across the terminals (with a 20sec timebase) and see what happens during a start - failing batteries typically show large downward spikes on the trace.
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