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Engine randomly dying

Discussion in 'The Garage' started by jonjkim12, Aug 21, 2014.

  1. xschris

    xschris XS400 Guru Top Contributor

    This is the kind of oil I used it's very sticky. I would research the web for other ways to oil as this is just what I did.
     

    Attached Files:

  2. jonjkim12

    jonjkim12 '77 XS360 Owner

    that's what scares me, everytime i touch my bike, there's something new to spend hours on....

    do you mean the filter oil? i bought the one Uni sells. Its a Uni brand cleaner and oil spray canister.
     
  3. xschris

    xschris XS400 Guru Top Contributor

    Welcome to old bikes:laugh: The uni's with oil will filter a LOT more dirt out than what you have now:wink2:
     
  4. jonjkim12

    jonjkim12 '77 XS360 Owner

    my old bike is turning me in an old man. (lower back).

    That's good to hear, i will get back to you guys with a review on the bike after the change in case anyone else has been on the fence about it.

    thanks xschris
     
  5. Lou Ranger

    Lou Ranger Former xs400 Luddite Top Contributor

    At a recent "show and shine" gathering, I talked to the guy who rebuilt this xj700 and asked him about the scarves around his pod filters.

    He said he didn't want to have to have to take apart and re-jet the 4 carbs so he installed these things to restrict air flow back to normal instead.

    Thought you might be interested.
     

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  6. jonjkim12

    jonjkim12 '77 XS360 Owner

    Hey Lou,

    i've actually seen that a few times now. Not sure how i'd so that on a foam Uni, but if i install it and it clearly needs rejecting i may need to look into that.
     
  7. Lou Ranger

    Lou Ranger Former xs400 Luddite Top Contributor

    I think it is some sort of elasticized fabric (might even be like a thin wet suit) - and came sewed already so he could just slip them on like a sock.
     
  8. Sesty

    Sesty H.E. Pennypacker

    its a twin! just re-jet!
     
  9. jonjkim12

    jonjkim12 '77 XS360 Owner

    Pods on!

    doesn't seem like i need rejecting, i did resync my carbs since the first time i didn't have the right hose size and just did a rough sync, this time i used the correct size (edited)

    i haven't noticed any major changes since putting the filters one, may a little smoother. But one things that's been bothering me is i am getting really poor pull in 1st and 2nd gear. I don't think this started when i put the pod on, just something i've been noticing recently.

    i included shots of the carb where it meets the engine, this part always seems a little insecure to me, anyone have any suggestions on what to do about the poor pull? Before when the timing was way off and i was experiencing the major issues, the pull used to be really strong in 1st gear.

    Is it possible the really advanced timing just made it pull stronger in 1st? From my research it seems like the opposite is supposed to happen when timing is advanced that much.

    I also included picture of my from gaiter, that's the next project for me to tackle, not going to lie, it makes me nervous.


    Edit: i always mispell, typically leaving out "n't" which makes my posts pretty confusing, im sure. sorry
     

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    Last edited: Oct 13, 2014
  10. xschris

    xschris XS400 Guru Top Contributor

    I would get the correct hose for your carb sync and make sure that is right. Your next step would be to fine tune the carbs. I would pull the plugs and see what they look like.
     
  11. mjewell

    mjewell XS400 Enthusiast

    Your fuel filter is also on backward
     
  12. xschris

    xschris XS400 Guru Top Contributor

    Filter looks right to me. :confused: They have an arrow on them so it's fool proof:wink2:
     
  13. Lou Ranger

    Lou Ranger Former xs400 Luddite Top Contributor

    View attachment 16632
    Yes it is.
    They function either way but are designed to allow any accumulated detritus to build up between the screen and the housing. More storage capacity for it on the outside I guess.
    With clear plastic filters you can see if/when the filter is getting plugged if the fuel follows the arrow.
     

    Attached Files:

    Last edited: Oct 13, 2014
  14. xschris

    xschris XS400 Guru Top Contributor

    That's how I have been doing it for the last 15+ years.
     
  15. jonjkim12

    jonjkim12 '77 XS360 Owner

    Ya i synced the carbs with the correct hose the other day, and rode it into work today. Probably the smoothest ride i've had on this bike since i got it, coming out in first at a light is probably what i notice the most, the rpms were super steady.

    Once i was done syncing, it was idling at like 700-800 which wasn't possible before, because anything lower than 1.5 would just cause it to die. So i'm happy about that, i'll be playing with the mixture screws and throttle stop this week as i'm riding to work, etc.

    before the carb sync the left plug was ALWAYS super black and the right was black everywhere except the little ceramic piece, which was white. I'm assuming that was because the carbs weren't synced. I have new spark plugs which i'll put in to see how it is after the carb sync.

    But still experience pretty slow acceleration in 1st and low rpms in 2nd. But honestly, right now i'm okay with how it is, i'd rather it be like this than before.

    and ya, i believe my filter's fine, the arrow points in the right direction.

    Also one other thing, i've been putting 1oz/gallon of Seafoam in my tank for the last 2 fill-ups, not sure if this is relevant in any way, but felt it would use it.
     
  16. xschris

    xschris XS400 Guru Top Contributor

    Your idle should be set at 1200.
     
  17. jonjkim12

    jonjkim12 '77 XS360 Owner

    Thanks xschris, i set it there.

    going to do an oil change, got a K&N online, but it doesn't come with an O-Ring,

    anyone know which one of the three listed here is the right one?

    http://www.partsnmore.com/parts/yamaha/xs360/?filters[sort]=relevance&filters[per_page]=100
     
  18. arfstrom

    arfstrom XS400 Guru Top Contributor

    Fram has one, that is generally available locally at most stores. That is why I put that in my signature line. (I have short term memory, I know I don't have to search hard for that number) CH6003. We have Orielly auto stores, my closest store doesn't keep it in stock, but the one that is 15 miles does. We a farm type store called FleetFarm, they stock it. I was surprise when Google said I can get a six pack for cheaper than what I had found before that point. Shoot, I bet the fram web site, might have local stores on thier webpage that you can figure out closer than mail order.

    Oh yea, they come with a gasket.

    Here is a list of compatible bikes that works with the same filter. so if it fits the xs400, it should fit the 360, based that this model filter is the same on all those bikes.

    http://www.boats.net/parts/detail/yamaha/Y-1L9-13441-11-00.html
     
  19. jonjkim12

    jonjkim12 '77 XS360 Owner

    are Frams typically better than K&N? i normally go with K&N on my truck, so i figured it was good brand. Problem is i already bought the filter, its only 5 bucks, but still. No way i can buy just the O-Ring? weird K&N doesn't supply one, when almost everyone else does (which i didn't know until i clicked, 'buy')
     
  20. arfstrom

    arfstrom XS400 Guru Top Contributor

    I am cheap, I don't' have a preference, (sorry I added more after your posted)
     

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