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  • 1 Post By cambo
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May 18th, 2020, 01:37 AM   #1
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I Ride: 09 FE450
2009 FE450 Inconsistent Spark

I am having trouble with my 450.
It was running fine, then gave up on a ride.
I got it home and started checking.

I have put a new spark plug in and checked the spark under starter motor.
Plug will spark for a bit then stop for a bit, start, stop, start, stop.
You get the picture.

Is this likely to be the cap failure, or should I be looking further.

Thanks.
PB
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May 18th, 2020, 03:20 AM   #2
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Measure the resistance of the spark plug cap should be 5 k ohms if you don’t have a meter and want to try to fix it . Take needle nose pliers tug out the threaded lug that that goes on the wire be carful a resistor will come out under tension from a spring . Polish up the nut head put some die electric grease on press the star washers back in with a blunt item . Let us know if this helped
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May 18th, 2020, 02:26 PM   #3
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Hey Mate,

Thanks for the reply.

I went back to basics.
Trimed the wire and remounted the cap, and that solved the problem.

I should have done it before I posted, but was having a bit of a heartattack.

Does the plugcap fail often?
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May 30th, 2020, 06:41 PM   #4
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Further to that, I found that it was indeed the spark plug cap.
I bought a new one, and have the old one as a spare.

Is there anyway to stop the new one from going the same way?
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June 10th, 2020, 03:35 PM   #5
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Yes take the old spark plug cap grab the threaded end that goes on the wire tug it out with pliers it’s held in place with two star washers . Watch the resistor and spring will pop out take the lug polish the nut head up add some die electric grease red assemble super easy no more flame outs . Bet this had members tearing injectors fuel pumps chasing the flame out gremlin .
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