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| Hi all 900ss with 750 paso ignition help http://ducatipaso.org/forum/viewtopic.php?f=1&t=7177 |
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| Author: | startline [ Thu Jun 18, 2015 5:24 pm ] |
| Post subject: | Hi all 900ss with 750 paso ignition help |
Right hoping for some confirmation on a digiplex 2 ignition fault, my 1990 bike has stopped sparking on the rear cylinder at 3700 rpm rev it up and rear cylinder cuts out, remove plug cap ground a new plug confirm s spark literally stops!, changed coils wiring from front to back and surprisingly it still stops sparking on the rear cylinder which indicates to me pickup or digiplex, pick up either works or not as far as I know and front is fineso assuming a new digitplex is required, front cylinder is fine on either coil and everything else passes as ok any thing I have missed? And I also assume a Paso 750 digiplex would work ok, air tube is also ok as is the digiplex earth HELP :-) |
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| Author: | Brutus [ Thu Jun 18, 2015 6:50 pm ] |
| Post subject: | Re: Hi all 900ss with 750 paso ignition help |
Hi, did you changed the coils also from vertical to horizontal..? Suppose you allready tried other spark plug cables etc to be sure..? |
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| Author: | higgy [ Thu Jun 18, 2015 8:02 pm ] |
| Post subject: | Re: Hi all 900ss with 750 paso ignition help |
check the ignition switch |
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| Author: | Norman38 [ Fri Jun 19, 2015 9:26 am ] |
| Post subject: | Re: Hi all 900ss with 750 paso ignition help |
Has the pickup-line the greatest possible distance to the ignition cables? |
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| Author: | startline [ Fri Jun 19, 2015 12:15 pm ] |
| Post subject: | Re: Hi all 900ss with 750 paso ignition help |
Yes 're coils, rewired them both, same fault, the pickup is working fine to the horizontal cylinder and both cylinders are fine to3700 rpm when the rear stops sparking, ignition switch must be ok because it's starting fine |
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| Author: | Derek [ Sat Jun 20, 2015 9:31 am ] |
| Post subject: | Re: Hi all 900ss with 750 paso ignition help |
But the ignition switch is well known weak point and can develop resistance across the contacts dropping the volts on load. If the volts are down that could be a reason for the sparks stopping on the rear cylinder. The rear may be more sensitive to a reduced voltage. The cure for the ignition switch is to fit a relay to do the switching, triggered by the ignition switch. |
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| Author: | higgy [ Sat Jun 20, 2015 12:14 pm ] |
| Post subject: | Re: Hi all 900ss with 750 paso ignition help |
| Author: | startline [ Wed Jun 24, 2015 8:06 pm ] |
| Post subject: | Re: Hi all 900ss with 750 paso ignition help |
Paso ecu fitted and now perfect :-) |
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| Author: | higgy [ Wed Jun 24, 2015 9:31 pm ] |
| Post subject: | Re: Hi all 900ss with 750 paso ignition help |
just got lucky, was a wiring issue most likely |
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