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About boomshakalaka

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  1. boomshakalaka

    Gas cap noise/pressure

    I know this is an old post now, but I read through to the end of thread and didn't see anyone mention it. Per your description, your tank was under vacuum, not pressurized. The hissing was the air rushing in not out. At 1 bar, gasoline would need to be at about 260*F or 125*C to start to boil. I'm sure it was hot out, and I'm sure the motor was cooking, but it's doubtful your fuel was sitting at 260*F, and even then, under pressure, the boiling point increases. It is interesting that there doesn't seem to be a pressure vent, just a vacuum vent. Our cars' EVAP systems do both. Doing only one doesn't make a ton of sense, but maybe it's what the manufacturers were able to negotiate with Emissions regulators short of having to add a clunky system that offers no marketable performance gains (no one's buying dirt bikes based on MPG..).
  2. boomshakalaka

    XR600R, lean, rich, lean, rich... which is it?

    So I received the correct UNI filter in the mail, lubed and installed it. Bike started up, but needed choke this time. I rode around for a bit, and again the revs started to stick kind of high, so I adjusted the idle speed screw way down, and it worked. I guess the idle speed screw was just way too far in, so it worked for startup when the PO had the clogged slow jet in there. Now the bike idles pretty nicely and returns to a nice low idle. After this, I decide to play with the FMF supertrapp style exahust. The bike is quite loud and I live in a pretty quiet neighborhood. So I went to take out a few plates, and there were washers in there spacing ou the plates.. and there were 10 plates in place already! With the airholes drilled in the air pox and the washers in the supertrapp, I think its official, the previous owner was a moron who had no clue about tuning. Anyways, I'm going to play around with adding and subtracting plates over the next few days.. right now it's got 5 or 6 in and it's definitely on the rich side. But it seems like besides the leaking head, the bike is running decently.
  3. boomshakalaka

    XR600R, lean, rich, lean, rich... which is it?

    Cristian! Hey, there Ya, I do, and ya, that's what I thought it might be, but I wasn't sure. Man, I hope the head isn't cracked! I guess I probably won't have much luck tuning it until I dig into the motor. Now I just have to make up my mind and decide whether I want to do the work myself in my carport, or farm it out. Not sure how my landlord would feel about me doing a top end rebuild in the carport.
  4. boomshakalaka

    XR600R, lean, rich, lean, rich... which is it?

    Thanks, this is the sort of "where to look" guidance I was hoping for. Sometimes it's just really hard to know where to start, you know? I have the next two days off, so I should be able to get through this checklist. I'll update then.
  5. boomshakalaka

    XR600R, lean, rich, lean, rich... which is it?

    Yes, but once the bike was up to temp and suddenly idling really high, the idle speed knob/screw no longer seemed to have any effect.
  6. boomshakalaka

    XR600R, lean, rich, lean, rich... which is it?

    I'll give that a go, but just to be clear I meant the idle speed screw/knob had no effect, I did not play with the idle mixture screw.
  7. boomshakalaka

    XR600R, lean, rich, lean, rich... which is it?

    So I finally got around to getting a new pilot jet. I also ordered an UNI filter, but of course I was either drunk or half asleep and managed to order the 83-84 one-- so I've got the proper one ordered and on its way. With the new 62 pilot jet the bike stars really easily, first or second kick, with no choke (which was more or less the case after cleaning and reoiling the K&N filter that is currently on the bike.) But now it actually idles well on the pilot, which was not the case before. However, when I went for a test ride, once the bike heated up it stopped wanting to idle on the pilot and would idle really high with the idle control screw having no effect. Like I said before, the head leaks pretty badly... could it be that warming the bike up is enough to let enough air in through the deteriorated gasket to make it run lean? Or possibly something with the valves not getting a good seat once the engine warms up?
  8. boomshakalaka

    XR600R, lean, rich, lean, rich... which is it?

    On my next day off, I'm going to pull the carb off and dig into it. I was hesitant the first time because I did not have a shop manual yet. I may have over-oiled the filter (K&N-- ADV people are saying iit's inferior to the UNI, esp for dirt riding), I also did not use grease on the mating surfaces, which the ADV crowd pointed out might be exasperating whatever the issue might be. I'll look into adjusting the valves, if it's anything like my cb350 was, then I shouldn't have too much of a problem. I recently moved out here, and I have to say I miss having my garage and all my tools! It's really tempting at times to just take it to a shop, but 1) being new out here, I don't have a shop I can trust and 2) the cost of labor is almost always the same or more than the cost of tools... and there's no cursing/bleeding when you have a shop do your work, so where's the fun? Anyways, I'm down in Santa Monica, not super familiar with the LA area yet, but I have a feeling that I'm not very close to Anaheim?
  9. boomshakalaka

    XR600R, lean, rich, lean, rich... which is it?

    Why not just clean the jet? It was just a bit of build up from sitting. Why can't I just spray this out with carb cleaner like I did? And ya, I'll take the carb off the bike when I get a chance and give it a proper cleaning.
  10. I recently purchased a 95 xr600r. It was/is in pretty ratty condition, but it runs and it's got CA plates. Now I'm slowly going through it, doing the small bits I can with limited tools in my 1/4 of a carport space that I have to work on/store the bike. I made a few posts in the ADVrider xr600r thread, but figured I might get more responses here seeing as there is a whole forum for these bikes. Here's the two posts I made so far over there. and the second post