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Thread: 2 stroke warm start problems
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5th June 2008, 02:11 PM #16Deceased
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Don't know anything about motorbikes but I had the same problem with a Ford Fairmont Ghia adapted to run on gas. Great on a cold start, but restarting within 20 mins of turning engine of was impossible.
Neither the RACV nor a ford dealer could find the fault, but talking to a home mechanic one day whilst walking in the street he suggested to increase the size of the cables from the battery to the starter motor and earth. Did this and never had any problems again.
So it may be in your cables and may be worth looking into if all else fails.
Peter.
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5th June 2008 02:11 PM # ADSGoogle Adsense Advertisement
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5th June 2008, 04:29 PM #17
Yes, I spoke the people who sold me the bike and they said that it sounds more like an electrical problem. Increased heat in the electrics ups the resistance in the cables so spark may not get through. I'll have to check that out
cheers peterMick
avantguardian
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5th June 2008, 04:33 PM #18
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5th June 2008, 06:03 PM #19
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5th June 2008, 07:58 PM #20
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5th June 2008, 08:56 PM #21
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6th June 2008, 02:20 AM #22
Anything pre 88 the DENSO Hot U standard plugs are the way to go though its still 2 stroke rubbish
Ashore
The trouble with life is there's no background music.
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13th June 2008, 11:49 AM #23Senior Member
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Ginger
Have you checked the coil. Back in the early seventies I had one of those TY250 Yammie Trials bike, while out the back of Mt Coota with a bunch of mates annoying the country folk with our bikes we stopped for a rest. I went to start the bike but it would not fire. pulled everything out there and then. Motor cold it fired up. Took a couple of days before finding out the coil had failed.
D D
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13th June 2008, 01:44 PM #24
Had similar issues with my 2-stroke outboard motor. Wouldn't start when hot. It could have been a few things but likely that the spark plug gap was too wide causing a poor spark that seemed exacerbated when the motor was warm... perhaps the gap widened ever so slightly when hot? Check the spark plug gaps are what they should be for your motor. Sometimes the plugs suggested for your motor don't have the correct gap out of the box and require re-gapping before putting them in and using them.
I ended up changing the ignition coils too This might also have been the cause so check that.
Also check fuel is getting to the motor. My outboard used a vacuum type fuel pump and after warming up then stopping and letting it sit for 5 mins it would lose its vacuum and require re-choking and several yanks on the start cord to get fuel flowing again.
So might be any of those too if they relate to your bike motor?How much wood could the woodchuck chuck if the woodchuck could chuck wood?
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14th June 2008, 11:19 AM #25
Gingermick,
Have you done any Leak Tests for escaping Air abound the carb?
ALSO;
Would you mind telling Ashore what to do................
I have just fixed an "ISSUE" with my Honda H100 2 Stroke
It had Water in the Gearbox and Diff oil.
Made some nice mayonaise
Normal bike is a Goose.........Guzzi for the UnknownNavvi
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15th July 2008, 11:31 AM #26GOLD MEMBER
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Fixed it yet? Another issue may be the float bowl vents, you would be better off just rebuilding the carby, after you find it under the fairing that is. Floats sink, vents block up, gaskets leak, needle & seats dribble etc.
CHRIS
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