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Offroad => MXU => Topic started by: fred pierce on June 16, 2014, 08:58:57 PM

Title: mxu 250 engine cutting out
Post by: fred pierce on June 16, 2014, 08:58:57 PM

my 2005 mxu 250 cuts out when i  try to rev the engine.
any body got any ideas of hat could be the cause

Title: Re: mxu 250 engine cutting out
Post by: zombie on June 16, 2014, 09:52:14 PM

Details.... When did it start? When was the bike last serviced? How did it start?
How many miles on the bike? Original owner?
What are you wearing? ;)

Title: Re: mxu 250 engine cutting out
Post by: fred pierce on June 17, 2014, 05:55:04 AM

Thanks for coming back to me
The quad has covered 3800 Klms and needs a service oil change etc the problem started when I was riding it just cut out . The quad starts and runs but when applying gas it cuts out ???
Yours faithfully
Fred

Title: Re: mxu 250 engine cutting out
Post by: zombie on June 18, 2014, 02:04:25 AM

I would pull the top off the carb, and check that rubber diaphragm for tears Next I would pull off the float bowl, and look for dirt/anything up in the main jet.

Also pull off the vacuum line that goes to the fuel petcock. Suck on the end of the line, and you should have a steady stream of fuel out of the tank.

Could be as simple as a bad spark plug but I think the above stuff may get it.

Title: Re: mxu 250 engine cutting out
Post by: fred pierce on June 19, 2014, 06:54:39 AM

Hi thanks for the info
Will take your advise and look at what you suggested many thanks
Fred

Title: Re: mxu 250 engine cutting out
Post by: zombie on June 20, 2014, 01:10:25 AM

No trouble. Please keep us posted on what you find.

Title: Re: mxu 250 engine cutting out
Post by: bism45 on June 21, 2014, 08:17:33 PM

i have exactly the same problem on mine (same year) but i have 4 x mxu's and only this prob on one, i have cleaned the carb and they have quite new plugs, will def try the other ideas out though....cheers ;0
P.S YOU DIDN'T ANSWER WHAT YOU WERE WEARING LOL

Title: Re: mxu 250 engine cutting out
Post by: zombie on June 22, 2014, 05:48:17 AM

No one ever does... Sigh

Title: Re: mxu 250 engine cutting out
Post by: m2yuout on January 18, 2016, 08:16:24 PM

Similar issues here..... did you guys find the route cause??

Cheers

Title: Re: mxu 250 engine cutting out
Post by: Bratman2 on January 19, 2016, 02:23:09 AM

Last time I had this problem, grandson's Mongoose 90, the nearly new NGK plug was bad. Plugs are pretty cheap and fairly easy to change. I would do that first. Second I would tear into the carb if the plug doesn't fix it.