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Old 08-22-2008, 09:02 PM   #1
dangelo_texas
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Still having problems RC51

Whats good moto. Still have problems with the beast. Brief history-bike almost runs out of gas, wont start after filling it up and getting it home. Change out fuel filter. Bike cranks wont turn over......Fuel Filter was first option....please advise
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Old 08-22-2008, 09:03 PM   #2
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did you disconnect the PC?
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Old 08-22-2008, 09:04 PM   #3
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can you hear the fuel pump cycle when you turn the key on?
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Old 08-22-2008, 09:21 PM   #4
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Quote:
Originally Posted by witchdoctor575 View Post
can you hear the fuel pump cycle when you turn the key on?
I can hear it cycle, didnt pull the PC Yet
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Old 08-22-2008, 09:26 PM   #5
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i would disconnect the PC and double check all you battery/electrical connections. rc's are really notorious for vibrating loose.
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Old 08-22-2008, 09:31 PM   #6
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Quote:
Originally Posted by witchdoctor575 View Post
i would disconnect the PC and double check all you battery/electrical connections. rc's are really notorious for vibrating loose.
Thats what I will do, full to the top with gas.....pulled pc, still just cranking and no pop! You think clogged fuel injectors? I know the fuel filter was dirty bad....so thats been swapped.....having gotten a little fire to it, but no pop yet!
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Old 08-22-2008, 09:40 PM   #7
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have you pulled a plug yet to see what they look like? air filter ok? very well could be clogged injectors but I would check out everything else before digging that deep.
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Old 08-22-2008, 09:41 PM   #8
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will do all that before
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Old 08-22-2008, 09:51 PM   #9
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What would I be looking for in regards to the plug?
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Old 08-22-2008, 09:58 PM   #10
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I doubt it's the plugs.

but if the tips are missing = bad
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Old 08-22-2008, 10:00 PM   #11
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not getting any fire what so ever....
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Old 08-22-2008, 10:01 PM   #12
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maybe bike went into vapor lock not sure if bikes do that.
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Old 08-22-2008, 10:17 PM   #13
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Quote:
Originally Posted by dangelo_texas View Post
not getting any fire what so ever....
no fire huh? you took the pc out and made it factory right? did you get any FI codes when it all started?
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Old 08-22-2008, 10:21 PM   #14
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Quote:
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no fire huh? you took the pc out and made it factory right? did you get any FI codes when it all started?
It never started. Pulled the PC and made it factory, no codes, but with spark plug pulled, getting no fire.....however spark plug was soaked in gasoline.
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Old 08-23-2008, 07:53 AM   #15
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u said the plugs where soaked in gasoline... got a great idea....put a match to it and see if you get any fire..lmao...
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Old 08-23-2008, 07:57 AM   #16
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Quote:
Originally Posted by dangelo_texas View Post
It never started. Pulled the PC and made it factory, no codes, but with spark plug pulled, getting no fire.....however spark plug was soaked in gasoline.
well it isn't a fuel problem then. you need to take out the plugs and clean them or replace them if you have more than 7k miles on them. wet plugs won't fire. rc's have massive injectors so they need plugs in good condition to fire properly. leave off the pc when you get dry pugs installed and go from there.
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Old 08-23-2008, 03:38 PM   #17
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Quote:
Originally Posted by witchdoctor575 View Post
well it isn't a fuel problem then. you need to take out the plugs and clean them or replace them if you have more than 7k miles on them. wet plugs won't fire. rc's have massive injectors so they need plugs in good condition to fire properly. leave off the pc when you get dry pugs installed and go from there.
I have been helping my boy Levi here, and I pulled a plug wire out, and tried to ground it to see if we got spark, and no spark whatsoever. I then got the plug on the wire, and grounded the plug to the block, and still no spark, so I am thinking either bad coil or bad CDI box?! Anything else that can be causing lack of spark?? Please advise!

Thanks!

-Fernando
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Old 08-23-2008, 03:54 PM   #18
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well... at this point it could be the ignition converter or the ignition pulse generator. Kinda unlikely the coils went out. be real sure to check the ground wire leading to the ecu. they wiggle loose alot. the ignition converter is under the tail section mounted to the sub-frame. all I can tell you is to make sure ALL your connections are tight and ALL your fuses are good(there are fuses all over the place). beyond that I would say get it to patrick and let a pro handle it from there.
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Old 08-23-2008, 04:11 PM   #19
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Yeah, I was doubting the coild went out, but you said the pulse generator, which is MECHANICAL, right? Do they wear out? My strengths are in cars, not bikes, so my bike knowledge is limited. I will check all grounds too. The weird thing is this: we tried firing it up and a blue flame shot out of the LH pipe, and we got some weak "pops", and for a flame to come out means there was FUEL AIR and SPARK! So, the ignition HAD to work during that time! Does alot of cranking damage the Converter? I also pulled the Power Commander and hooked everything to stock and still nothing. I doubt the compression is that high to ignite the fuel with compression ignition, but I could be wrong?! If none if this works, then good 'ol Levi's gonna have to have that towed to Motorcycles Unlimited or the Honda Stealership!! Thanks a ton man!!
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Old 08-23-2008, 04:51 PM   #20
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Quote:
Originally Posted by Fern_ZX6E View Post
Yeah, I was doubting the coild went out, but you said the pulse generator, which is MECHANICAL, right? Do they wear out? My strengths are in cars, not bikes, so my bike knowledge is limited. I will check all grounds too. The weird thing is this: we tried firing it up and a blue flame shot out of the LH pipe, and we got some weak "pops", and for a flame to come out means there was FUEL AIR and SPARK! So, the ignition HAD to work during that time! Does alot of cranking damage the Converter? I also pulled the Power Commander and hooked everything to stock and still nothing. I doubt the compression is that high to ignite the fuel with compression ignition, but I could be wrong?! If none if this works, then good 'ol Levi's gonna have to have that towed to Motorcycles Unlimited or the Honda Stealership!! Thanks a ton man!!
well there has to be spark to get fire,lol. left side pipe means nothing as there is a header collector before it branches out to the dual exhaust. a weak battery will make for weak spark so make sure you guys are working on a fully charged battery. compression is only like 10.2 so it is kinda low. how do the air filters look? plugs are wet so they are getting fuel, a little bit of fire is present so check battery now and make sure air filters are clear so it can get air. There is no use in diving into pulse generators as a mechanic will need to test it out.
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