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james anderson |
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james anderson Derestricted Danger
Joined: 14 Feb 2018 Karma :
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Posted: 17:31 - 14 Feb 2018 Post subject: Suzuki Marauder 125 Bogging Down At High Revs |
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I have had a Suzuki Marauder 125 for a couple of months, and when I first bought it I brought it to The Mechanics and had the carbs cleaned and a new float needle installed, and the bike run like a dream.
Last week I fell around a corner at around 15 miles per hour, and the only visible damage was a cracked front light and the gear lever being bent back.
I've repaired the front light and bent the gear lever back into place, and the bike started fine and runs fine, except when I pull the throttle back past a certain point it's loses power and jerks as if it is not getting enough fuel.
I have returned it to the Mechanics yesterday, and they have taken the carbs off cleaned them and reinstalled them, and it hasn't made any difference.
They have checked the fuel flow and that is ok, and the pump is working fine, so they thought that maybe the side stand cut out was being activated at high Vibrations, so they bridged that and it didn't make any difference either.
They are now totally stumped, and so am I.
Does anybody have any suggestions in regards to what the problem might be? |
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jaffa90 |
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jaffa90 World Chat Champion
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james anderson |
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james anderson Derestricted Danger
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james anderson |
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james anderson Derestricted Danger
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jaffa90 |
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jaffa90 World Chat Champion
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james anderson |
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james anderson Derestricted Danger
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jaffa90 |
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jaffa90 World Chat Champion
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P. |
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P. Red Rocket
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james anderson |
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james anderson Derestricted Danger
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james anderson |
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james anderson Derestricted Danger
Joined: 14 Feb 2018 Karma :
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Posted: 13:01 - 15 Feb 2018 Post subject: |
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Paddy. wrote: | Check for air leaks, get it running and spray around the carb/inlet with wd40, if the revs change, there is a problem.
Also make sure the airbox and shit is seated correctly, also that your filter isn't full or shit.
That will be the best bet, rather than fucking with the carb even more. You shouldn't really need to go near it. |
The airbox is apparently fine according to the mechanics, and the filter is clean. For what it's worth, it runs pretty much the same without the filter in at all.
I asked them to check for air leaks, and they said that there is no point, as that would cause it to run shitty all the way through the revs, where as currently it runs as if it has no problem whatsoever until the last third or so of the throttle being turned.
I have also asked them to check for an air vacuum caused by the petrol tank cap, which they are going to do today.
They seem to have been very thorough, and are genuinely stumped. |
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jaffa90 |
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jaffa90 World Chat Champion
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james anderson |
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james anderson Derestricted Danger
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P. |
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P. Red Rocket
Joined: 14 Feb 2008 Karma :
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Posted: 13:33 - 15 Feb 2018 Post subject: |
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If you are local, I'll take a look. a mechanic that is stumped probably shouldn't be in that job |
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james anderson |
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james anderson Derestricted Danger
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MCN |
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MCN Super Spammer
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P. |
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P. Red Rocket
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james anderson |
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james anderson Derestricted Danger
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Posted: 17:53 - 15 Feb 2018 Post subject: |
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MCN wrote: |
You can't find Paddy.
Paddy finds YOU.
Since you and your mechanics are stumped then it may be time to start at the beginning.
Try to determine what reasonably could be damaged in a fall and work done from there.
You say the power loss occurs at a certain point when you twist the throttle back.
Thinking outside of the box..
Is the cable free and is is routed correctly from the throttle grip to the carb?
Is the fuel tap straw OK? It may dislodge in the fall. (Not likely as they stay in place for ever normally.) |
Yeah the cable is fine, and I can see it moving up and down correctly on the carb.
The fuel tap and the pipe are also functioning correctly.
I've just come off of the phone to the mechanics, and they are saying that they thing it is electrical, and want to change the coil. I'm sure they are just guessing now, and the bill is getting bigger everytime they guess at something else.
They have ruled out a vacume caused by the tank cap being blocked, and they have ruled out cracked rubber or metal around the carbs. |
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james anderson |
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james anderson Derestricted Danger
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cb1rocket |
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cb1rocket World Chat Champion
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Posted: 12:49 - 16 Feb 2018 Post subject: |
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Have you checked the tank for fuel flow? Possible filter/tap blockage and maybe a vacuum being created in the tank? Any of them will cause high speed running problems. To check for vaccum issues open the tank filler cap. If it goes away you may have a blocked breather tube. ____________________ Honda H100S2 Rebuild - https://www.bikechatforums.com/viewtopic.php?t=253852 |
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james anderson |
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james anderson Derestricted Danger
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ThatDippyTwat |
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ThatDippyTwat World Chat Champion
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james anderson |
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james anderson Derestricted Danger
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Posted: 20:19 - 16 Feb 2018 Post subject: |
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ThatDippyTwat wrote: | My 125 commuter is, essentially, a 4 valve Marauder (Hysoung Cruise 2).
Fuel line was iffy, corrugated. Supposed to be 6mm ID, but in places it was down to 2mm, and was fine at slow speeds, but bogged when you ask it for more revs or put on more load. No idea how it happened, but it went away when I replaced it. Fuel came out, but not in enough quantity/volume to suplpy the carb properly at higher revs. |
I have checked that personally, and so have the mechanics.
The thing is, it was running fine one minute, I dropped it on it's left side and left it for the night, and the next day it had the problem. Nothing would have got blocked that way. |
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ThatDippyTwat |
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ThatDippyTwat World Chat Champion
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james anderson |
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james anderson Derestricted Danger
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ThatDippyTwat |
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ThatDippyTwat World Chat Champion
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Old Thread Alert!
The last post was made 6 years, 69 days ago. Instead of replying here, would creating a new thread be more useful? |
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