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Flash18

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  1. Flash18
    it sputters out..I can feel the bike get weaker, I don't think it's an electrical issue. I think it's either the fuel pump or battery..will be testing those as soon as possible. I've heard several different possibilities, however the darn thing doesn't die down when someone is trying to figure out what's wrong , so non of them have seen it happen. Flash, Wichita KS
  2. Flash18
    Thanks for the help..I have checked the spark..and yes during the occurances it does have spark at the plugs. It starts just fine, just at random points in a trip is dies. Once it made it 3 blocks..and one of the times it made it 100 miles. The fuel pump has also been tested. However on my bf's gw he found out that the fuel pump was randomly failing due to battery issues. His bike was having a similiar problem, and replacing the battery fixed it. A battery however is also $100. Will try to knock out some of the cheaper/more simple fixes. Thanks again. Flash, Wichita KS
  3. Flash18
    I had my bf pose this question a while back..but there were some communication issues. I have a 2006 Yamaha Royal Star Tour Deluxe. Will run just fine for a period of time..then drop and cylinder and die. When it does this, it will not start for another hr or so. I know it does not have a vaccum issue in the tank. My bf also pulled the carbs and cleaned them. Any ideas as to what could be causing this? Another mechanic said that is could be the ICU (or equivalent)? However this is a $300 part, and I don't have alot of spare cash to just blow. My mother has a ident bike to mine. So could experiment with swapping parts to see what's wrong. Just looking for some guidence. Thanks for any help. Flash18, Wichita KS
  4. Flash18
    Well, I just HAD to know, so I called the Yamaha Corporation, Star Motorcycles division. While I was unable to speak directly to an engineer, the operator I did speak with relayed for me. What I was told: The resulting turbulence of the air induced through the separated air boxes causes slight vacuum differences which were compensated for by using the different sized jets.
  5. Flash18
    I just realized that I've been misrepresenting the position of the jets...y'all are right, the two on the left are 122.5 and the two on the right are 117.5 and 120...but my question remains. For most any other bike, you'd want them to be paired equally, whether they have the same jets in all four, or 1 pair larger and 1 pair smaller (usually running the leaner jets in the front carbs cuz ambient airflow to the outside of the cylinder will compensate for the hotter condition of the leaner jets,) but why did Yamaha run two large jets on the left side, and two smaller, and dissimilar jets on the right side?
  6. Flash18
    This is the reason why the rear carbs have bigger jets than the front. What is in question here is why are the jets dissimilar between left and right in the front carbs?
  7. Flash18
    This is quite sensible, but you'd think the engineers at Yamaha might have considered this?? WTH is up with that???
  8. Flash18
    Thank you for that. We surely missed that. We have the manual for the '06 and it also shows the very same thing...just not were we'd been looking! SO...does anyone know why Yamaha uses two dissimilar jets in the front carbs? The bike is running great after the carb clean/tune, so there is again no good reason to tear them down again, but I feel like I want to take out the 117.5 and stick another 120 in its place.
  9. Flash18
    Haha, funny you should say this. A common house fly (musca domestica) was found INSIDE one carburetor. The indicators were quite decisive. You'd be riding along, all is well, and with no rhyme or reason, the engine would begine to stumble. At one point, we'd got the bike to start, but was barely running, by touching the header pipes right near the heads, it was clearly obvious that the engine was running on the left two cylinders, but not either of the right two. Further diagnosis showed that there was spark at all four plugs. As far as the question about the jets, I don't think it says anything in the manual about this issue. We are confused as to why there are 2 different sizes in the front carbs. Are we missing something in the book??
  10. Flash18
    Okay so here's what happened: Occasionally, my bike drops a cylinder or two, both on the right side, for no apparent reason. My cute boyfriend, who knows what he's doing, found that the problem was not ignition related and decided to pull the carbs out and clean them up. The carbs were filthy throughout, but what was unusual was that he found that the rear carbs both had the 122.5 jets installed, but the fronts had two different jets, a 117.5 and the other which was visually a different size (couldn't READ the numbers.) Not having any idea why they would be different, but also not having any good reason to wait on an answer to this question (the bike ran fine, aside from the occasional loss of the right side cylinder) he put it all back together and Carbtuned them and the bike runs great. Hasn't been back on the road long enough to discern whether or not the arbitrary loss of cylinder(s) has been cured. But, herein lies the question: WHY WOULD THERE BE 2 DIFFERENT JETS IN THE FRONT CARBS? We (he) knows why the jets are different from front to rear, but this is the first time he's ever seen a set of carbs with 2 the same jets in the rear and 2 TOTALLY different jets in the front. Has anyone else seen this before?
  11. Flash18
    I'm not wanting an entire set up, such as the headers. I do however want new pipes, not slip on mufflers. I'll keep looking around and see what I find. Thanks.
  12. Flash18
    Okay, so I'm wanting a new set of pipes on my bike. Would prefer to go with a full set and not just mufflers. I want something quiet but with a bit throatier of a sound. I could have sworn my last RSTD had Hard Kromes, however after looking at their site, they do not have a specially fitted one for an RSTD. Any suggestions on what I should go with? I have a 2006. Thank you for any advice. Flash
  13. Flash18
    I've looked at the previous posts on adding a fairing to a RSTD. I really like the looks of the stratoliner deluxe fairing and was wondering if anyone happened to know how much modification would be necessary to make it fit an RSTD...I've seen the ones that look like a harley fairing, but am wanting a different look... Any input? Thanks!
  14. Flash18
    To be perfectly honest, I think it is up to the rider. Different people prefer different tires. I personally have Avon Venom's on my RSTD, and Perelli's on my Vstar. I love them both. Other than that, happy hunting =) Flash18
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