Date: 22-05-19  Time: 17:37 PM

Author Topic: None fazer Question (xj900f Igniter box)  (Read 133 times)

Dinger1962

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None fazer Question (xj900f Igniter box)
« on: 15 May 2019, 07:21:17 PM »
Hi  fellas n burds recently bought an xj900f to have a bit of a project to go at got it running last night then promptly burned out the igniter box (feckin melted) do any of you guys have any expierience of this before or any idea what may be the cause of this thanks in advance any ideas /info greatfully recieved cheers
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unfazed

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Re: None fazer Question (xj900f Igniter box)
« Reply #1 on: 15 May 2019, 08:49:50 PM »
A few things can cause it poor earth allowing back feeding through the Ignitor, power connected to an earth on the ignitor or something plugged into the wrong place in the loom. Check the loom very carefully for damage and/or evidence of melted wires, ensure all the earths are good and check that everything is plugged into the correct place (wires going in match wires coming out) There are a few plugs which are the same size, but are totally different circuits.

Trebus

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Re: None fazer Question (xj900f Igniter box)
« Reply #2 on: 15 May 2019, 10:21:58 PM »
The igniter boxes on these are a bit fragile but are repairable. The transistors can be replaced by hand if you know what you’re doing. Normal failure mode is firing on 2.

As suggested, have a check through the wiring for any corrosion which will cause high resistance.

His Dudeness

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Re: None fazer Question (xj900f Igniter box)
« Reply #3 on: 16 May 2019, 06:55:04 PM »
I'd say unfazed is on the money. If it's a project bike that hasn't run in a while it makes sense that a ground might have been missed or the wrong connectors were plugged together. Another possibility could be that a component in the ignitor failed short so too much current flowed but that seems less likely.

The igniter boxes on these are a bit fragile but are repairable. The transistors can be replaced by hand if you know what you’re doing. Normal failure mode is firing on 2.

As suggested, have a check through the wiring for any corrosion which will cause high resistance.
I don't think he's looking for corrosion. I think he's looking for signs of excessive current flow so burnt/melted connectors or wires. If the problem was caused by plugging the wrong connectors together or missing a ground the wiring could be damaged as well as the ignitor :'(