Scotland North AR Posted October 30, 2016 Share Posted October 30, 2016 Hi, I have a 2009 Sigma 150, it does about 7,000 miles per year. It is kept on a battery conditioner all of the time and if you point towards the ignition key it starts instantly.......except.....when it is left without starting for two/three weeks it is a bugger to start. It takes 2,3,4 minutes of cranking and a bit of accelerator pumping before kicking into life. The same day, next day, it fires up instantly once again?What is going on in the period when it is idle for a few weeks and is there anything I can test for? If so, what and how?When going through the normal start procedure, you can hear the fuel pump whirring for a couple of seconds to pressurise up.Thanks in advance for any assistance. Link to comment Share on other sites More sharing options...
colindavies56 Posted October 30, 2016 Share Posted October 30, 2016 When it's on the trickle charge,is the green light on.mine comes off the road in the thick of the winter and starts 1st time,no throttle used.get someone to check battery cracking amps while its turning over.does it turn over quick , and does it prime quick. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted October 30, 2016 Member Share Posted October 30, 2016 Do you think the cranking speed when it doesn't fire is as high as when it does?I don't think this is the cause but it's worth measuring the minimum battery voltage while cranking and checking all of the wiring and connections that affect the starter.Jonathan Link to comment Share on other sites More sharing options...
Scotland North AR Posted October 31, 2016 Author Share Posted October 31, 2016 Hi again, the cranking speed is great and it seems to maintain that speed for the time it takes to start hence my thought that it was fuel/ecu related rather than battery or starter. Link to comment Share on other sites More sharing options...
Domus Posted October 31, 2016 Share Posted October 31, 2016 Hi Nigel. Sorry I can't help but one thing I do know is not to touch the throttle on a Sigma on starting. It alters the throttle site. One question, do you wait for the fuel pump to pressurise the fuel line before pressing the start button? Peter Link to comment Share on other sites More sharing options...
Scotland North AR Posted October 31, 2016 Author Share Posted October 31, 2016 Hi Peter, yes I do wait for the brief whirring to stop as it pressurizes. Normally I don't touch the throttle until after a few minutes of cranking and nothing else has worked until that point therefore not sure whether it has/hasn't helped. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now