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Post by zebulon on Feb 27, 2022 13:45:25 GMT -5
timpa136Sparkplug is out, did a couple of revs and will leave it overnight. Used a jumper box all the time parallel to battery will give it a try with pre-mix and Will make a pre-mix in my external tank and disconnect the oil feed, maybe it‘s getting to much oil @framitron checked the float valve its ok, will also try to lower the level weak spark? Hard to verify, maybe I have a spare coil from another bike to test I called it a day early today, see what will happen tomorrow.
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Post by timpa136 on Feb 27, 2022 15:04:10 GMT -5
I called it a day early today, see what will happen tomorrow.
I totally second Framitron, this can be extremely frustrating. VERY unlikely metering pump is putting out too much.
Keep in mind later, float will need to be set at specs, turned sideways, just touching closed from experience. Member here Stuart t140v has super new float bowl cover gaskets.
Good luck tomorrow. tim
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Post by Framitron on Feb 27, 2022 16:49:54 GMT -5
Has anyone had an experience with their float getting saturated with fuel and sinking? This could result in severe flooding even while set to the correct level. I dont think that I have heard of this problem for the RE5 carburetor but it can happen to foam floats.
Not sure the best way to test the spark while plug is in the engine aside from connecting another spark gap device in series with the existing spark circuit or even just an inductive timing light clamped around the spark plug wire. Any thoughts?
Al
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ap951
2nd Gear
Posts: 280
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Post by ap951 on Feb 27, 2022 17:13:21 GMT -5
I've long suspected that when an RE5 gets really flooded the gas is pooling in the low spot of the intake manifold between the carburetor & the engine block. The fuel cannot evaporate because it's cut off from any fresh air
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Post by zebulon on Feb 28, 2022 5:52:43 GMT -5
No luck, spark is ok, I have a inline sparkplug tester. filled the bowl like you said, it tried to start for a couple of revs, but the spark got wet to soon to fire, I thing. the primery channel is wet somehow it gets to much fuel right from the beginning of cranking even with just the fuel in the bowl (no fuel line connected), its flooding
edit: just measured the coil 0,7/8 ohm primary, 150kohm secondary , the book says 1 ohm and 1,5k, come on never had a bad coil is it a misprint?
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Post by zebulon on Feb 28, 2022 10:04:05 GMT -5
wet primary
I measured before the connector and got 1,5K, disassembled it and don't get it: the pin in the middle is not conductive, you won't get 1,5k at the sparkplug. According to the manual you measure inside the connector where the sparkplug sits.
Has he RE5 a resitor sparkplug connector?
I changed the sparkcable to be sure put everything back together, but nothing changed.
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Post by timpa136 on Mar 2, 2022 10:04:48 GMT -5
I've long suspected that when an RE5 gets really flooded the gas is pooling in the low spot of the intake manifold between the carburetor & the engine block. The fuel cannot evaporate because it's cut off from any fresh air Good point. It may be difficult on the rack but carefully shim the center stand to lean the bike to the left a bit so the gas runs out the left until you get this flooding under control. Caution as to backfires out the carb. too. Keep us posted. tim
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Post by zebulon on Mar 6, 2022 6:04:22 GMT -5
The frustration is reaching another level............
Cleaned carbs again for an 1 hour (ultrasonic), checked float again, changed to 0 Ohm sparkplug cap,
Changed carb seal, added O ring behind the choke unloader, warmed spark plug, checked fuel in low spot...
engine tries to fire for the first revolutions with white smoke but does`t fire up,then it's just spinning.
What worries me is, although spark is wet, you cannot light it up with a lighter.
Obersations: the "original" setting of the air screw, before i touched anything and the bike run was 5 turns out !!! and the air screw extension (silver part) is not centered in the hole.
But anyway even when I go back to theses old settings it does't start
Is there a carb rebuild kit available? I don't know if that will help, that's the only thing left.
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Post by Framitron on Mar 6, 2022 11:12:10 GMT -5
Hi Zebulon: Your sparkplug comment had me wondering... What kind of fuel are you using? Is it fresh? I have found that my RE does not like to run on fuel that is more than two months old. (But that is American fuel which might be slightly different than your fuel)
Al
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Post by zebulon on Mar 6, 2022 12:18:13 GMT -5
Fuel is fresh 102 oktan, yes we have this at some of our regular fuel station here in Germany.
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ap951
2nd Gear
Posts: 280
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Post by ap951 on Mar 6, 2022 12:53:17 GMT -5
high octane fuel might be your problem Find some fresh low octane gas (below 90 if you have it) flush all the high octane from the carburetor & tank & give it a try. you might be surprised...
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Post by zebulon on Mar 6, 2022 13:20:16 GMT -5
I am grasping any straw, 95 is the lowest I can get, but it ran already with 102, although only with full throttle and open choke, see earlier post - even this doesn’t work any more
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Post by Framitron on Mar 6, 2022 16:23:28 GMT -5
I always use the lowest octane rating that I can find which in the US is 87. But there are a variety of methods to measure octane level so its possible that they are different.
Also I wonder if there is a loose ground wire in the ignition system. Bad ground connections frequently result in very mysterious electrical problems.
Al
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Post by timpa136 on Mar 9, 2022 18:53:45 GMT -5
The frustration is reaching another level............ Cleaned carbs again for an 1 hour (ultrasonic), checked float again, changed to 0 Ohm sparkplug cap, Changed carb seal, added O ring behind the choke unloader, warmed spark plug, checked fuel in low spot... engine tries to fire for the first revolutions with white smoke but does`t fire up,then it's just spinning.
What worries me is, although spark is wet, you cannot light it up with a lighter. Obersations: the "original" setting of the air screw, before i touched anything and the bike run was 5 turns out !!! and the air screw extension (silver part) is not centered in the hole. But anyway even when I go back to theses old settings it does't start Is there a carb rebuild kit available? I don't know if that will help, that's the only thing left.
Zebulon,I had something similar, not to say this is your condition. You might remove the radiator cap and peer down the tube while cranking and hopefully not see any bubbles in the coolant. Hoping for a good outcome. Tim
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Post by zebulon on Mar 10, 2022 5:15:13 GMT -5
Mmmm, I have had this thought but suppressed it......... So far I removed left exhaust, nothing dripping out, light up the existing gas in manifold with a "bang", so there is some mixture I would guess
Anyway will pray and check for bubbles on saturday.
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