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Post by kerstin on Aug 21, 2016 7:37:39 GMT -5
Hello,
last week our bike stops whyle running and was not able to drive home.
After cleaning the carburator the fault is still existing.
I change a cracked o-ring at tje pilot jet.
After changing the o-ring the engine runs much worse as before.
What will be the adjusting for the pilot screw? At the moment it 2.5 drills outside.
I will be very happy if there is any idea to solve our problem.
Thanks
Kerstin from Germany
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Post by timpa136 on Aug 21, 2016 10:15:57 GMT -5
If you have fuel petcock problems, make sure the vacuum hose isn't sucking raw gasoline from a ruptured diaphragm.
Did you check the float and see it float in water to check if it is saturated and heavy? (rare occurrence)
Idle mixture is a fuel screw, not an air screw, start out at 3/4 to 1 turn out from gently seating.
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Post by kerstin on Aug 21, 2016 10:54:16 GMT -5
Hello,
tjanks for thr hint. It may bee the pedcokk because there is much fuel on the spark plug while I tried to start.
I will check.
thanks
Kerstin
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Post by re5rotary on Aug 22, 2016 3:17:02 GMT -5
Hi do you actually have spark? Can you hear the CDI unit 'whinning'? What about a fouled or dead spark plug? Do you have a spare plug to try? regards Terry
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Post by kerstin on Aug 22, 2016 6:55:27 GMT -5
Hello,
yes the CDI makes noise.
I use A spark plug with an adapter that is not so sensitve for much fuel.
I had not checked the spark yet because there were some rotations of the engine.
thanks
Kerstin
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Post by tom93gts on Aug 22, 2016 14:25:54 GMT -5
Does it actually start and run a few seconds before dying?
Here are my two versions of something similar:
It was fixed when I adjusted the secondary butterfly inside the rotor housing to fully close. It wasn't quite fully closing so the secondary butterfly in carb would crack open with vacuum and cause the engine to lean out and stall.
At some time before this I had another similar issue:
This one was due to a clogged fuel filter.
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Post by kerstin on Aug 23, 2016 1:32:15 GMT -5
Hello,
The cold engine will only run for 2 seconds. It does not matter if the choke is used or not.
When we had the breakedown the hot engine runs in idle speet and stop when the throttle is opened.
At this breakedown the engine runs longer than a cold one.
Kerstin
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Post by kanonkopdrinker on Aug 23, 2016 1:38:42 GMT -5
Where in Germany are you?
Have you asked anyone in the Wankel IG to see if there is someone (nearby) who might help?
Mit freundlichen Gruessen
David
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Post by kerstin on Aug 23, 2016 7:29:16 GMT -5
Hello David,
we are near the "Burg Lißberg" where Wasserbüffeltreffen is in 2016.
Regards
Kerstin
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Post by HGH 770N on Aug 23, 2016 10:03:14 GMT -5
Kerstin,
My thoughts are WHY DID the bike stop running before you cleaned the carb,
Had you fueled up with dirty incorrect fuel?
Had your point closed up or moved on the back plate?
Had your new pug in adaptor failed or oiled up?
Pilot screw TOO far in would prevent running.
You could blank petrol vacuum pipe off and try to run on Prime .
see if fuel is coming out of vacuum diaphragm .
Roger
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Post by kerstin on Aug 23, 2016 14:07:07 GMT -5
Does it actually start and run a few seconds before dying? Here are my two versions of something similar: It was fixed when I adjusted the secondary butterfly inside the rotor housing to fully close. It wasn't quite fully closing so the secondary butterfly in carb would crack open with vacuum and cause the engine to lean out and stall. At some time before this I had another similar issue: This one was due to a clogged fuel filter. Hello Tom, I had checked the function of the secondary butterfly as I had seen in your film. The engine will run if I hold the butterfly as you do in the film. That must be the solluntion for our running problem. The test was done with no gas tank on the bike. We supply fuel by a small bottle. Engine was not able to run after removing the gas tank. After using the hand to hold the butterfly it was as we like it. Can you explain us how to adjust the butterfly? Where I have to adjust? Thank you for the hint. I think the solution of our problem will be in front of us. regards Kerstin |
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Post by tom93gts on Aug 23, 2016 14:33:47 GMT -5
Hello Tom, I had checked the function of the secondary butterfly as I had seen in your film. The engine will run if I hold the butterfly as you do in the film. That must be the solluntion for our running problem. The test was done with no gas tank on the bike. We supply fuel by a small bottle. Engine was not able to run after removing the gas tank. After using the hand to hold the butterfly it was as we like it. Can you explain us how to adjust the butterfly? Where I have to adjust? Thank you for the hint. I think the solution of our problem will be in front of us. regards Kerstin I don't have a picture of the adjustment, but its the cable you see behind the carb on the engine. There is a screw you can adjust to will allow the butterfly built into the rotor housing to fully close. That fixed it for me. I can get a picture tonight if my description isn't clear. Good luck! Tom |
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Post by wayne on Aug 23, 2016 19:18:40 GMT -5
I've been following this thread as you can always learn something.
But now I'm getting a little confused. Tom, you refer to adjusting the secondary butterfly in the rotor housing. I think you must be referring to the Port Valve, it's the only butterfly actually in the rotor housing and certainly would affect running if it was popping open before it should. Is this the valve you're referring to ?
The secondary butterfly is the butterfly inside the large 32mm throat of the carby. The primary butterfly is inside the 18 mm small throat.
Slightly more confusing for me is that in the video, you seem to have your finger on the choke butterfly, not the carb's secondary butterfly.
This is not a criticism, I'm just trying to clarify and get a standard on part names as I'm easily confused : )
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Post by timpa136 on Aug 23, 2016 19:54:46 GMT -5
I hope to maybe help clarify ,and add a precaution as well. Also Roger makes excellent points.
Use caution around the port valve as it takes a trained ear to reset the set screw. A sticking port valve, if stuck while driving
will usually result with a high idle, not stall out. The port valve is behind the cover.
The cold choke butterfly in Toms great example is covering up for a lean condition eg. clogged jet(s) or a massive vacuum leak and/or lack of fuel .
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Post by timpa136 on Aug 23, 2016 20:03:52 GMT -5
Hello, It may bee the pedcokk because there is much fuel on the spark plug while I tried to start. I will check. thanks Kerstin The spark plug will wet foul easily and result in no start as Terry suggests.
Please be sure the spark plug gas dries and evaporates before and/ or replace with a plug that you know is a good one to test.
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