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| Hard to start Cooper S when cold https://www.ausmini.com/forums/viewtopic.php?f=2&t=78783 |
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| Author: | belldane [ Wed Oct 10, 2012 5:18 pm ] |
| Post subject: | Hard to start Cooper S when cold |
Hello people. Need some ideas on why my car is so hard to start when cold. I would guess it needs about twenty to thirty cranks, with full choke, before it even tries to fire. When it does eventually fire it runs like a dog's breakfast, almost as if it is flooded. Once it clears itself and gets warmed up it is fine. Starting from warm is no drama. First kick every time. I have tried starting with no choke at all, half choke but no luck at all. The motor has twin 1/1/2 SU's and electronic ignition from a Honda Civic, I believe. Any ideas please? Thanks PS I would have the car dynotuned to get to the bottom of this annoying problem but none around where I live. |
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| Author: | ryan [ Wed Oct 10, 2012 5:39 pm ] |
| Post subject: | |
Have a look at the choke and see if it is adjusted and working. Also, have you checked the condition of the spark plugs? |
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| Author: | belldane [ Wed Oct 10, 2012 6:33 pm ] |
| Post subject: | |
Thanks for that. I will check the chokes tomorrow. The car is currently fitted with Split Fire plugs SF6B if that makes any sense to you. I thought plugs may be the problem. What are the correct ones for a 70 Mk2 S. Thanks |
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| Author: | 1071 S [ Wed Oct 10, 2012 7:57 pm ] |
| Post subject: | |
I would try a new set of plug leads... had the same problem a while ago and that solved it... and its a cheap trouble shoot. Cheers, Ian |
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| Author: | phillb [ Wed Oct 10, 2012 8:08 pm ] |
| Post subject: | |
ryan wrote: Have a look at the choke and see if it is adjusted and working.
Also, have you checked the condition of the spark plugs? +1 on the choke. Get someone to slowly pull out the choke while you watch. There should be 2 stages as the choke is pulled out. 1 a cam should slightly up the idle 2 another cam should cause the jet base at the bottom of the carb to drop down. I've been told if they are grumpy on cold start/drive that's a good sign they are set right (not too rich). But it shouldn't be that hard to start. I bet the chokes not operating) |
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