2012 Kubota 400/idles good backfires when given gas
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By SayHiToRambo
08 trooper 1100
Bit of background. First the machine would take for ever to start. So I adjusted the valve shims into spec and made sure the timing is correct. Starts perfectly now.
now it fluctuates on idle. Bogs down, Revs up, repeat. I noticed the fuel pressure drops from 60psi to 20psi while that happens. It also bogs down at the lower end of each gear, higher rpm seems to be fine. Seems to struggle under load. In neutral it revs up perfectly.
brand new fuel pump, fuel filter, gas. I noticed on the fuel pressure regulator there’s that vacuum nipple, it’s not attached to anything and I’m not sure where it would go. Possibly the problem?
Another issue is the tip off the end of the exhaust is broken off, sensor is still attached and connected. Could that cause these issues?
my next plan was to look into the pressure regulator and voltage to fuel pump while driving. Is there anything I’m missing or any ideas you guys have?
thanks!
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By allinone
Recently purchased 2nd hand not going Crossfire GT400 (Australian branded name?) 2020 model. Has some issues what would be the best forum to pose questions.
Thanks
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By Homeowner A
Have a bed decal that has never been right. Contacted Coleman Powersports and they have no solution. Anyone know of a place where I could get a replacement decal or complete decal or graphics kit?
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By Homeowner A
Is there a diagram of all of the grease zerks for a Coleman UT 400? Mine squeaks like crazy and want to try and remedy it.
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By Buddee
2010 Hisun 500 - Carbed'. She sat for about 3 weeks since last use. Couldn't get it started.... has spark but plug was not wet. Bought new plug, cleaned the carb, confirmed fuel pump (pulse type) is working. Still nothing. Put gas in the plug hole.... started right up and idled as normal and drove perfect. Used it for the rest of the day without issue. Tried to start again next morning.... same problem. Poured gas in plug hole again.... started up and best kind again.
Anyone have any insight to what's going on?
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