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Car Forum / MINI / November 2003Spluttering
Once upon a time there was a 1300, running a 1 3/4 SU, and when you really stuck your foot up it, it would splutter and occasionally backfire out through the carb mouth. The 1300 went to a better place, and an 1100 went in. Using the same carb, (and yes I realise this is way to big for an 1100) and lo and behold, besides making pitiful power, when you plant foot, it vents gas out through the carb. Bearing in mind that the needle is probably miles out, and the carb to big to boot, has anyone come across this problem? I have disconnected the vacuum advance and this makes no difference. Questions: How important is the ballast capacitor(I think it?s a cap) that I have sometimes seen on the coil? I have rewired my mini after the old loom started to short in too many places, so it is possible that the problems are of an electrical nature. I don?t have the ballast cap. Next question, is there anyone in Hamilton, NZ, that feels like a challenge? The car makes next to no power and my skills are stretched trying to find out why. Any comments appreciated. Mark > Once upon a time there was a 1300, running a 1 3/4 SU, and when you > really stuck your foot up it, it would splutter and occasionally > backfire out through the carb mouth. When did you last check the dashpot oil level? > > Once upon a time there was a 1300, running a 1 3/4 SU, and when you > > really stuck your foot up it, it would splutter and occasionally > > backfire out through the carb mouth. > > When did you last check the dashpot oil level? When I put the new motor in, the dash level is fine. I tried playing with the timing today, if I twist the diz to the right the spluttering under load goes away, but it burns very blue now, like there is a lot of oil being burnt, which it doesn't do at less advanced(?) firing angles. Curious >>>Once upon a time there was a 1300, running a 1 3/4 SU, and when you >>>really stuck your foot up it, it would splutter and occasionally [quoted text clipped - 10 lines] > > Curious And the cap on the coil is to stop radio interference. I would tend to set the timing static and check the advance with a light just to see what happens in the advance curves. You may have a seized mechanical advance function. And Mark was sitting next to Elvis in the spaceship, which I thought was kinda strange, but then they turned to me and said: > I tried playing with the timing today, if I twist the diz to the right > the spluttering under load goes away, but it burns very blue now, like > there is a lot of oil being burnt, which it doesn't do at less > advanced(?) firing angles. Sounds like you have a weak mixture under load. Weak mixtures require a lot more ignition advance, which explains why it improves things when you wind the dizzy clockwise.  Signature(-AD-) <uniqueid 'at' lineone.net> http://website.lineone.net/~uniqueid/ If you see the answer, now's the time to say.. |
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