No spark ?.

Post by **Mickthecat** » Fri Dec 04, 2015 2:07 pm

Hi guys,

Just been out to start  the RT. It turned over but won't fire. Last used about a month ago. Battery is good, plenty of fuel in. Took a plug out & turned it over with it touching the cylinder head & can't see a spark.
Any ideas what checks do I need to make ? 1996 1150.
Many thanks
Mick

Post by **David.** » Fri Dec 04, 2015 3:39 pm

Mickthecat wrote:Took a plug out & turned it over with it touching the cylinder head & can't see a spark.

Has the plug on the other cylinder been checked for a spark, this may help to diagnose whether the problem is common to both cylinders or not.

Is this the Bike in question.

Post by **Mickthecat** » Fri Dec 04, 2015 4:49 pm

Hi David

Thanks for your reply 

Yes that's the bike. No spark to either side

Regards

Mick

guest2360 · Post by **guest2360** » Fri Dec 04, 2015 5:08 pm

Probably the ignition sensor has packed up.  Lives in the bottom of the front engine cover and over the years can suffer from corrosion. 

Post by **David.** » Fri Dec 04, 2015 5:09 pm

So it looks like a problem which is common to both cylinders.

I see from this thread, http://www.1200rt.com/index.php/topic,1350.0.html, that you have changed the Hall Sensor.
My understanding "Google" is that the Hall Sensor has two Sensors (Top & Bottom),  one which triggers the Ignition & one which triggers the Injection.

How about the Ignition Coil, this pdf. Document http://advwisdom.hogranch.com/Wisdom/oi ... ensors.pdf shows how to test the Coil & Hall Sensor.

Is the wiring/insulation in good condition & are all connectors clean, something "Going to Earth" may kill the Spark.

From the Reg. No. the Bike is a 1997 R1100RT.

Post by **Mickthecat** » Fri Dec 04, 2015 5:28 pm

Yes I replaced the HES with one from Motorworks ( although it was a used one ) & all has been fine so far . I'll check the coil & wiring tomorrow. Are there any electrical connectors in particular I should look at first ?.
Regards
Mick

Post by **David.** » Fri Dec 04, 2015 5:46 pm

I believe that if an Injector is removed, the HES can be checked to see if it is sending a signal to the Injection System.

I suppose the first place to start with the wiring/connectors etc. would be to check anything related to the Ignition System.

Is the Bike garaged or out in the elements.

Post by **Mickthecat** » Fri Dec 04, 2015 6:46 pm

Its garaged. However the last time it was out was in a downpour. Not sure at all if that'd have any bearing ?.

Thanks

Mick

Post by **David.** » Fri Dec 04, 2015 7:09 pm

Mickthecat wrote:However the last time it was out was in a downpour. Not sure at all if that'd have any bearing.

Moisture & electricity don't mix together very well, any breaks in insulation may cause the current to arc against other metallic parts of the Bike & "go to ground (earth)" before getting to the spark plug.

This may sound a little odd, try starting the Bike in the dark & look to see if anything is arcing against the frame etc.

Protecting the electrics with something like ACF-50 which dispels moisture, but conducts electricity may be helpful.

Post by **Mickthecat** » Sat Dec 05, 2015 11:24 am

DaygloDavid wrote: I believe that if an Injector is removed, the HES can be checked to see if it is sending a signal to the Injection System

Got the plastics off & pulled the injectors. There's no  fuel passing through them when the bike is turning over. It's priming ok.
Had a look at the wiring & there's nothing that looks out of place. Is there a way of testing the coil itself ?

Regards

Mick

guest2360 · Post by **guest2360** » Sat Dec 05, 2015 11:45 am

When you switch on can you here the fuel pump start up, just a quick wearing noise. If not then it could be that. Its in the top left of the tank. They can also suffer from corrosion.

Post by **David.** » Sat Dec 05, 2015 11:49 am

Mickthecat wrote:Got the plastics off & pulled the injectors. There's no fuel passing through them when the bike is turning over.

Looking at these Forums,
http://www.2wheeltours.hashsg.com/index.php?topic=193.0,
http://advrider.com/index.php?threads/h ... or.688232/,
they both suggest that if there is no spray/squirt from the Injector, then the HES is u/s.

Post by **David.** » Sat Dec 05, 2015 12:08 pm

Mickthecat wrote:Is there a way of testing the coil itself?

Page 5 of the pdf. Document shows how to do a resistance check on the Coil, http://advwisdom.hogranch.com/Wisdom/oi ... ensors.pdf

Post by **Mickthecat** » Sat Dec 12, 2015 5:55 pm

Well I got a new HES from MotorWorks & she fired up first prod of the starter  ^-^

Thanks for your help

Mick

Post by **stelyn** » Sun Dec 13, 2015 10:24 am

Mickthecat wrote: Well I got a new HES from MotorWorks & she fired up first prod of the starter ^-^
Thanks for your help
Mick

Just shows what a good and useful `forum' this is, and  where you got lots of help.    Glad your now up and mobile again.....

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