KX Riders

Maintenance & Technical => KX100 / KX85 / KX80 / KX65 / KX60 => Topic started by: Orville on March 24, 2013, 02:34:55 PM

Title: KX100 goes hard then bogs down after 5 minutes?
Post by: Orville on March 24, 2013, 02:34:55 PM

Hi all,
My KX100 goes really hard after start up and for about 5 - 7 minutes, then (when its warm) goes off the boil - will not get back on song and bogs down like its running out of fuel. All I can do limp back to base. What is going on? I changed the plug - it made no difference - same fault. At first i thought it may be an air lock in the fuel dilery - maybe the tank was not vented to atmosphere - so I ran it with the cap off - still no go - wait for it to cool down - whammo - flying superbly - again soon as its warm - bog down time?

Title: Re: KX100 goes hard then bogs down after 5 minutes?
Post by: Motorrad on March 25, 2013, 08:08:39 AM

have you checked the water pump?    perhapse a broken bolt....

Title: Re: KX100 goes hard then bogs down after 5 minutes?
Post by: Orville on March 26, 2013, 09:06:12 AM

Ok, so it might be overheating? Thanks shall check that out.

Title: Re: KX100 goes hard then bogs down after 5 minutes?
Post by: Motorrad on March 27, 2013, 05:41:07 AM

Quote from: Orville on March 26, 2013, 09:06:12 AM

Ok, so it might be overheating? Thanks shall check that out.

very possible....

Title: Re: KX100 goes hard then bogs down after 5 minutes?
Post by: Ims Roll on March 27, 2013, 06:05:54 AM

could be a bad head gasket? head seals when cold then as soon as in heats up starts leaking?