serious lack of power
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timwilks13
- SCUK Website Padawan
- Posts: 1248
- Joined: Sun Feb 03, 2013 5:55 am
- Location: Scarborough, soon to be Poland
serious lack of power
went out properly for the first time last night with my new 1.3 fitted, 1st and 2nd pulled fine but the higher gears just didnt pull at all, i had more power from my 970cc. all plugs are firing, su needle is out 1.5 turns, compression test was fine. not sure whats going on and dont fancy doing 25mph all the way to wagtail. any clues as to what might be the cause?
1986 SJ410 - Furry dice, new window winder.
10 kinds of people in this world, those who understand binary and those who dont.
if you can read this you're too close to the monitor, sit back and save your eyes!!
My build, formally Trotters build.
10 kinds of people in this world, those who understand binary and those who dont.
if you can read this you're too close to the monitor, sit back and save your eyes!!
My build, formally Trotters build.
Re: serious lack of power
Sounds like the air/fuel ratio is wrong.
There isn't a generic amount of turns that you need do on the SU mixture screw, all engines will need a slightly different adjustment.
http://sucarb.co.uk/technical-hif-type- ... ng-general
There isn't a generic amount of turns that you need do on the SU mixture screw, all engines will need a slightly different adjustment.
http://sucarb.co.uk/technical-hif-type- ... ng-general
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Edweird
- Suzuki, will you marry me?
- Posts: 2531
- Joined: Sat Jan 23, 2010 11:04 pm
- Location: Brigg, North Lincolnshire
Re: serious lack of power
Could also be a timing issue. Over-retarded or over-advanced
There's three ways of doing things:
The right way,
The wrong way
And my way, which is like the wrong way but faster.
The right way,
The wrong way
And my way, which is like the wrong way but faster.
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timwilks13
- SCUK Website Padawan
- Posts: 1248
- Joined: Sun Feb 03, 2013 5:55 am
- Location: Scarborough, soon to be Poland
Re: serious lack of power
checked the timing with timing light and its all fine. il have a fiddle with the mixture and see if i get anywhere!
1986 SJ410 - Furry dice, new window winder.
10 kinds of people in this world, those who understand binary and those who dont.
if you can read this you're too close to the monitor, sit back and save your eyes!!
My build, formally Trotters build.
10 kinds of people in this world, those who understand binary and those who dont.
if you can read this you're too close to the monitor, sit back and save your eyes!!
My build, formally Trotters build.
-
timwilks13
- SCUK Website Padawan
- Posts: 1248
- Joined: Sun Feb 03, 2013 5:55 am
- Location: Scarborough, soon to be Poland
Re: serious lack of power
when I wind the needle in alllll the way I can still drive it, that's not normal I'm guessing?
1986 SJ410 - Furry dice, new window winder.
10 kinds of people in this world, those who understand binary and those who dont.
if you can read this you're too close to the monitor, sit back and save your eyes!!
My build, formally Trotters build.
10 kinds of people in this world, those who understand binary and those who dont.
if you can read this you're too close to the monitor, sit back and save your eyes!!
My build, formally Trotters build.
Re: serious lack of power
all that does is adjust the air fuel ratio, it should drive with it set anywhere really but won't necessarily be the correct mixture.
Do you know what spring and needle is fitted?
Do you know what spring and needle is fitted?
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timwilks13
- SCUK Website Padawan
- Posts: 1248
- Joined: Sun Feb 03, 2013 5:55 am
- Location: Scarborough, soon to be Poland
Re: serious lack of power
I think its a yellow spring, so know I need to get a red, and not sure of the needle, will strip it and see, didn't think the wrong needle and spring would make it this powerless though?
1986 SJ410 - Furry dice, new window winder.
10 kinds of people in this world, those who understand binary and those who dont.
if you can read this you're too close to the monitor, sit back and save your eyes!!
My build, formally Trotters build.
10 kinds of people in this world, those who understand binary and those who dont.
if you can read this you're too close to the monitor, sit back and save your eyes!!
My build, formally Trotters build.
-
Edweird
- Suzuki, will you marry me?
- Posts: 2531
- Joined: Sat Jan 23, 2010 11:04 pm
- Location: Brigg, North Lincolnshire
Re: serious lack of power
You'd be surprised. The wrong spring can make it massively over/underfuel.timwilks13 wrote:I think its a yellow spring, so know I need to get a red, and not sure of the needle, will strip it and see, didn't think the wrong needle and spring would make it this powerless though?
There's three ways of doing things:
The right way,
The wrong way
And my way, which is like the wrong way but faster.
The right way,
The wrong way
And my way, which is like the wrong way but faster.
-
timwilks13
- SCUK Website Padawan
- Posts: 1248
- Joined: Sun Feb 03, 2013 5:55 am
- Location: Scarborough, soon to be Poland
Re: serious lack of power
am I just being an idiot because I can't find any float chamber springs anywhere on the sucarb site?
1986 SJ410 - Furry dice, new window winder.
10 kinds of people in this world, those who understand binary and those who dont.
if you can read this you're too close to the monitor, sit back and save your eyes!!
My build, formally Trotters build.
10 kinds of people in this world, those who understand binary and those who dont.
if you can read this you're too close to the monitor, sit back and save your eyes!!
My build, formally Trotters build.
-
dan_2k_uk
- I spend far too much time on here
- Posts: 4924
- Joined: Tue May 06, 2008 5:19 pm
- Location: Swindon, Wiltshire
Re: serious lack of power
Their website has changed. I think because there are options for needles and springs based in the age of the carb you need to phone them.
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