Recent content by Quart

  1. Quart

    Help please engine running on 2 to 3 cylinders

    Since you are unmounting the injectors and thereby FP, consider to check the filter below the FP fuel pressure regulator. There is a fingertip filter that chockes with dirt.
  2. Quart

    Pump or stator or map or what?

    Ye, tank is venting, breath hoses are clean and passing. The issue is genenerally from the hoses getting squeezed by the depression cause by the pump plus the warm air coming from engine. Anyway mounted the BMC Air Filter, power goes way better, milleage goes slightly down but not too much. So...
  3. Quart

    Pump or stator or map or what?

    That was fixed by myself, applied 90° brass joints and reinforced hoses to avoid collapses and chokes. Anyway updates. Mounted old filter, no substantial difference, mounted then 4-2-1 exhaust. Less power, in the way that with 4-2-X1-2 appeared like a 2T engine. Anyway did a 240km or so...
  4. Quart

    Pump or stator or map or what?

    Today I unmounted the TP sensor and checked for flaws. No flaws really, if i turn it from zero to max it goes from 900 to 4900 ohm, hence it does its job. I guess that the fact it does not reach 4500 lies in the TBodies themselves, the butterflies does stop too early (but they are done in this...
  5. Quart

    Cooling Draining Out

    coolant gets squashed out on engine off because the water pump stops turning. Hence the pression that was kept at bay goes to maximum and excessive water gets pushed out. Said that, if you start with MIN water at cold, it should not happen since water goes from Min (cold) to Max (hot). I would...
  6. Quart

    2003 Busa trouble starting after long rides

    what the.. wouldn't have belived if I didn't see it! Well, astounding! On second thought: I see, it's a lithium battery!
  7. Quart

    Pump or stator or map or what?

    Update, after testing the TPS moved on higher resistances, low revs seems to struggle way less on/off but fuel consumption still high (11-12kms/lt). Hence that's not the issue. The fact that struggle less on light gas it's because the engine *feels* the gas more opened than it is really and...
  8. Quart

    2003 Busa trouble starting after long rides

    What? 880A Cranking? Not even my 70A car battery throws that o.o sure 880 over 180?
  9. Quart

    Gen 1 hayabusa not going past 3000 rpms

    Dumb question: does it run roughly or finely? It may have TBs out of sync that urges to be setted. Other stuff ought to be: 2001 model, depends.. mine is a 2001 registered but 2000 effective with ext. FP. So on that fuel pump you have kinda 4 filters to check in order: 1) tower filter inside...
  10. Quart

    Pump or stator or map or what?

    So, got it back from the workshop, they mapped it, changed the EAPs (external air pressure sensor). Seems to work better, still same fuellage and similar struggle at low revs while driving in the traffic under 10% gas throttle. Less than before, so the EAPs was a culprit but not the only one...
  11. Quart

    Pump or stator or map or what?

    Out of ideas brought it to a prof. Dunno if they did something inbetween, these are the sheets atm. Today will call forth for updates on what's going.
  12. Quart

    Pump or stator or map or what?

    Updates: changed fuel pump with a Quantum FP that fits perfectly. I can smell better exhaust output (less unburnt gasoline), but still some hiccups at low speeds (less than 3000 rpms with <10% gas open). Had an idea: when redoing the throttle body sync i noticed that with or without airbox and...
  13. Quart

    Shinko splitting why?

    Continental for Busa starts from conti sport attack 3, 4, conti race attack (street) , contiroad attack and contitrail attack. Ain't cheap but they do their job and do it straight and good. ContiSportAttack 2 are a little underpowered for the outcome of the busa.. I mean that I would be feeling...
  14. Quart

    Pump or stator or map or what?

    checked his threads, couldnt find the right one :| let's hope he'll come in aid. I've also seen the BB thread about putting a secondary low-pressure pump in line, but if main pump struggles to keep the pace, will die sooner or later regardless the secondary pump :|
  15. Quart

    Pump or stator or map or what?

    Doing some tests, ramping up and descending a mountain (Cima Grappa) with passenger, *seems* it ran better with front light off and PC3 at +6% gas Did 10km/liter which is awful hence there is a big issue and on flat surface still hicc-upped. With light off seemed to run better but not always...
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