amalyos
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| posted on 13/4/09 at 01:28 PM |
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R1 5JJ Engine Problem
Help!!!
Set out for a day at Deatling, only to make it 10 miles before the engine decided to stop.
Symptoms:
Tickover was OK, at above 5000 revs there was a flutter/miss. The miss eventually got worse and stopped the engine.
The engine breathes very heavy and theres a small amount of oil in the catch tank.
The engine turns very slowly, like theres too much compression, but when the plugs are removed it turns freely.
I've drained the oil, there doesn't seem to be any problems with it.
Anyone got any ideas?
http://stevembuild.blogspot.com
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nitram38
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| posted on 13/4/09 at 01:37 PM |
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Try charging your battery.
It could be your rectifier/charging system has died.
Sounds like you have been slowly losing your electrical power and this has slowly killed the ignition/ecu power as the battery faded.
The slow turning over could be caused by a low battery.
The fact that it died when you revved it means that more power was taken from the battery to fire the spark plugs which dropped the voltage on your
ecu.
[Edited on 13/4/2009 by nitram38]
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amalyos
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| posted on 13/4/09 at 01:49 PM |
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I did a track day last week, and it was fine, although towards the end of the day, I noticed the noise at high revs.
It started fine this morning, but then the noise got worse and stopped the engine.
I'll try charging the battery. Thanks.
http://stevembuild.blogspot.com
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nitram38
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| posted on 13/4/09 at 01:54 PM |
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The "noise" could have been a misfire caused by the battery weakening or even the generator disintergrating?
I might be totally wrong, but this is the simplest thing to check.
Also once it re-starts, check the battery terminal voltage to see if it is charging.
Someone will be along to tell you what it is, as I am at work and don't have access to my manual.
[Edited on 13/4/2009 by nitram38]
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r1_pete
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| posted on 13/4/09 at 03:37 PM |
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Have a look at the alternator, I had one burn out on my R1 a couple of years ago, I assumed the noise was the insulation catching the rotor as it
melted then rubbed away.
You can check it without dismantling everything, unplug the reg rec from the alternator, check the resistance between the three wires comming from the
alt, between any two it should be 4.5 ohms IIRC, any significant deviation means its had it.
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amalyos
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| posted on 13/4/09 at 04:25 PM |
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This is good stuff.
Just checked the manual and it says it needs to be between 0.45 and 0.55 ohms.
Just checked mine and it's 0.8 ohms.
Does this sound like it's fried?
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nitram38
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| posted on 13/4/09 at 05:00 PM |
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Did you null the leads first on your meter?
Do they read zero when shorted?
If they don't read zero on their own, then you will need to subtract their resistance from your readings.
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amalyos
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| posted on 13/4/09 at 05:22 PM |
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Just checked, it doesn't read '0'. Reads 0.4, so looks like the alternator is OK.
Back to the drawing board. 
Battery is on charge, so I'll wait and see.
http://stevembuild.blogspot.com
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nitram38
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| posted on 13/4/09 at 05:24 PM |
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That is not bad news!
Maybe your rectifier?
Easier to change if it is.
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r1_pete
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| posted on 13/4/09 at 06:46 PM |
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Your alternator sounds like its ok, I'd agree next thing to check is the reg/rec. I'm sure I've got one cos I changed that before
finding the duff alternator, let me know if you need one and I'll see if I still have it.
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amalyos
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| posted on 13/4/09 at 07:53 PM |
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Thanks Pete.
I'm going to check the compression before touching anything else, as I'm paranoid it's a mechanical problem. Won't get this
done untill the weekend, so I'll keep you posted.
Thanks for your help
Steve
http://stevembuild.blogspot.com
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TimC
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| posted on 14/4/09 at 01:03 PM |
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Steve
U2U me your address and I'll send you a rectifier to try.
TC
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amalyos
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| posted on 15/4/09 at 05:49 AM |
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Thanks Tim, U2U on way.
http://stevembuild.blogspot.com
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