| Author | Message | ||
     Medi |
Hi guys, I'm having a weird starting issues with the bike that started about 2 weeks ago. when I start the bike the RPMs are a little low and after a few second it dies off unless i give a little gas for a few seconds and this has gradually become worse and worse every day (i commute on it daily). It has a brand new lithium battery (6months) and just did oil change about a month ago. Today after leaving work I had to real scare because I had to keep the throttle for about a minute to keep the engine from shutting off. Any ideas might be causing this? | ||
| Arry |
It could be a spark plug issue (fouling, ...). New plugs might cure your problem, and not expensive to try. Also, do you think your idle speed is set about right (not too low). On '06 & '07 Uly's there is a manual idle speed adjuster by the left side of the front cylinder. With the motor warmed up the idle speed should be 1050-1150. | ||
| Tootal |
IF the plugs are good pull the air cleaner off and look at the butterfly in the throttle body. Sometimes it gets a build up of carbon along the edges and blocks the air flow at idle. You can clean it or just reset your idle temporarily until you have time to clean it. Idle can be touchy. If too high it will hang around 2000 rpm and then slowly return. If this happens just lower it another 50 rpm and see if it fixes it. | ||
| Teeps |
I'm with Tootal... Clean the throttle body butterfly valve. Use the rest of the carb spray to decarbon the combustion chamber. Then replace the spark plugs. Then do the TPS reset procedure. | ||
| Medi |
Thanks! I will dig into it hopefully today or Fri. | ||
| Medi |
so I opened up the air box to try to get to the throttle body and this is what I found... is this some kind of DIY filter or is that stock and I assume the oil is from the filter?  [/URL] In addition, I think i need to clean the breather.... is it the same procedure as typical K&N filter cleanse?  | ||
| Froggy |
It is a Uni brand filter -  | ||
| Froggy |
Some oil residue in the airbox is normal, but not puddles of it like you have. Have you been overfilling the oil? Also, if you have a breather reroute as indicated by the second picture, you shouldn't have ANY oil in the airbox as the breathers wouldn't be routed in there anymore. I'm not sure what to make of your pictures. | ||
| Zac4mac |
Whoever oiled the Uni filter element used too much oil. | ||
| Medi |
I've had the bike for a little over a year and only did an oil and tire change and probably put less than 2k miles on it. It's weird that there is so much oil in the airbox because when I opened it up about a year ago it was dry. I guess I'll just get K&N filter, clean up the breather and see how it runs... | ||
| Tootal |
You can clean the breather just like a K&N. Like Zac4mac said, somebody over oiled the Uni filter. You're supposed to squeeze as much out of it as you can but they still will leave a little residue. | ||
| Arry |
That Uni is probably a good filter, if it cleans up good, reuse it. I have a K&N, but others have raised concerns that the K&N doesn't filter small particulate well enough. I am not too concerned about this, but do believe that an oiled foam filter would block small particles better. As far as the excess oil, maybe someone did a breather bypass on only one cylinder (the oily breather filter), and left one cylinder into the air box (that would explain the oil in the air box). If you are unaware, the Ulys need to run at the lower end of the dipstick, or else you get oil blown out of the breathers. | ||
| Uly_man |
"Today after leaving work I had to real scare because I had to keep the throttle for about a minute to keep the engine from shutting off. Any ideas might be causing this?". Sounds like you could need to reset the TPS but it could be many things. One thing I do know is this? That air filter is missing at least one half of its airbox seal. The Uni-Filter is a bit like the Pipercross system.  If you have a catch can, and you need it to condense/ collect the oil vapor, then you need a air filter as in picture number two. If you do NOT have a catch can then the that air filter will just saturate with oil from the inside out and block the engine crank case from breathing via the PCVs. It looks like it is very oily on the outside. You need to check that the PCVs are working correctly and that the breather mod has been done correctly as well. | ||
| Medi |
after a little investigation, looks like the breather is coming off of a hose that's routed through the front. (excuse my sloppy VR replacement job)  Also found another hose that's going out pretty much on top of the fan which says to oil pump but is cut off right right there  tomorrow I'll try to get that top black cover off and see how it's all routed. |
