surging and fuel starvation solved at last
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  1. #1

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    38023
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    Jul 16 2019
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    surging and fuel starvation solved at last

    hi Guys
    as per my earlier posts ive been working on my venerable 97 candy red bike
    earlier on it had surging and fuel starvation problems
    the surging was cured by repairing the throttle sensor pot
    the starvation was cured by
    assembling the fairing and undertray and side covers very very carefully so they mate perfectly
    making sure all the baffles were in prefect position
    sealing any gaps in the side covers to the frame with duct tape so no air will force its way in
    i discovered that the 97 and 98 models do not use air ducts even if the honda parts list say they do
    but they do use a air guide that keeps the air going thorugh the nose intakes directed to the oil cooler only with no seepage
    the earlier owner had deleted this part and chucked it away
    i am looking for one as this is useful to stop air leakage to the baffles
    if anyone has one im interested
    looks like this
    https://picclick.fr/Convogliatore-pr...228001018.html

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  3. #2

    Member #
    2343
    Bike(s)
    2K Titanium, 85 V65 Sabre (Totalled but saved me)
    Join Date
    Sep 24 2007
    Location
    Arizona
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    Re: surging and fuel starvation solved at last

    What did you to repair the TPS?
    Route 191 formerly Route 666 Some say that this section of the
    road has 1100 curves in 95 miles.

  4. #3

    Member #
    38023
    Join Date
    Jul 16 2019
    Posts
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    Re: surging and fuel starvation solved at last

    hi Guys
    the guy in italy still had it so ill get it in 10 days ill report when fitted should be all hunky dory then

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  6. #4

    Member #
    38023
    Join Date
    Jul 16 2019
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    Re: surging and fuel starvation solved at last

    hi beesty
    the problem with the tps on the carbs is that the first 1/3RD of the track gets used most and deteriorates
    what i did was
    extract the tps ( the screws are so tight i needed to lift up the carbs a little to access the last screw , now they are not too tight and can be taken out at will)
    dont loose the little "designed in black to be lost easily "adapter spigot
    you will notice that the tps is about 2 cm long
    at midway there is nothing inside expect the drive shaft at the center
    so you get a drill press and tiny 1.5 mm drill an drill an access hole just deep enough to penetrate the casing
    then you inject contact cleaner using a syringe and bung the hole
    then you wiggle the pot about 50 times back and forth
    if you connect a multi meter you will see the part that is open circuit normally gradually come back to life
    as compared to my new one i had a min of about 40 ohm and a max of about 3800 ohm
    this feeding into the spark controllers and advanges the spark on opening the throttle
    let me know if that worked for you

  7. #5

    Member #
    2343
    Bike(s)
    2K Titanium, 85 V65 Sabre (Totalled but saved me)
    Join Date
    Sep 24 2007
    Location
    Arizona
    Posts
    7,080
    Liked
    1826 times

    Re: surging and fuel starvation solved at last

    I'm not experiencing any issues yet (knock on wood) just some fyi for myself in the future. Didn't know if you had found a replacement. Factory solution is to pull the whole assembly and replace them ughh lol.
    Route 191 formerly Route 666 Some say that this section of the
    road has 1100 curves in 95 miles.

  8. #6

    Member #
    1728
    Bike(s)
    81,82,83 CBF's, 98 CBRxx, 07 CBR-1000RR/R, 83 FXSB
    Join Date
    Jun 03 2007
    Location
    Canada
    Posts
    3,975
    Liked
    1041 times

    Re: surging and fuel starvation solved at last

    Quote Originally Posted by cbrpaul View Post
    hi Guys
    as per my earlier posts ive been working on my venerable 97 candy red bike
    earlier on it had surging and fuel starvation problems
    the surging was cured by repairing the throttle sensor pot
    the starvation was cured by
    assembling the fairing and undertray and side covers very very carefully so they mate perfectly
    making sure all the baffles were in prefect position
    sealing any gaps in the side covers to the frame with duct tape so no air will force its way in
    i discovered that the 97 and 98 models do not use air ducts even if the honda parts list say they do
    but they do use a air guide that keeps the air going thorugh the nose intakes directed to the oil cooler only with no seepage
    the earlier owner had deleted this part and chucked it away
    i am looking for one as this is useful to stop air leakage to the baffles
    if anyone has one im interested
    looks like this
    https://picclick.fr/Convogliatore-pr...228001018.html
    Depending on which Air Guide Plate (baffle) you need? I have pictures of the upright baffle that can be used as a template for making your own. The horizontal baffle (lower unit) I’ve never removed so can’t help with that one at the moment. The parts number are the same for both sides of the fairing so you simply flip the piece to fit the location.

    As as far as sealing up the fairing joints go. I’ve only ever installed my fairing parts in the standard “fit and bolt up” fashion and never had a performance issue. Extra sealing has never been required. Extra sealing is not a bad thing mind you, unless you see an issue when all the Air Guide Plates are in place. That I guess remains to be seen.


    T.
    Last edited by TigreST; 09-25-2019 at 11:54 AM.
    "Stemmata quid faciunt."


 

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