Restart Problems

[ThisIsConnor]

My 2010 Ranger 800 starts beautifully cold but has trouble restarting once it warms up. It cranks sluggishly, sometimes backfires, and leaks oil from the valve cover after heavy use. The bike has been reliable for nearly 30k miles, so I'm hoping this is fixable. Could low compression or worn seals be causing this? Would love to hear solutions!

 

[Kimmy G.]

My 2010 Ranger 800 starts beautifully cold but has trouble restarting once it warms up. It cranks sluggishly, sometimes backfires, and leaks oil from the valve cover after heavy use. The bike has been reliable for nearly 30k miles, so I'm hoping this is fixable. Could low compression or worn seals be causing this? Would love to hear solutions!

Uhm... I'm not sure about Rangers with 800 hp. To really know if this is fixable, it's best if you would do diagnostic tests as early as now! Don't tinker with it already. And 30K is a lot for 15 years, so your Ranger is definitely tough. Hang on to it and hang on a little.

 

[ThisIsConnor]

Uhm... I'm not sure about Rangers with 800 hp. To really know if this is fixable, it's best if you would do diagnostic tests as early as now! Don't tinker with it already. And 30K is a lot for 15 years, so your Ranger is definitely tough. Hang on to it and hang on a little.

I've always made an effort to take great care of it, and hoping diagnostics will help keep it running strong. Appreciate your encouragement!

 

[frozenyogurt]

My 2010 Ranger 800 starts beautifully cold but has trouble restarting once it warms up. It cranks sluggishly, sometimes backfires, and leaks oil from the valve cover after heavy use. The bike has been reliable for nearly 30k miles, so I'm hoping this is fixable. Could low compression or worn seals be causing this? Would love to hear solutions!

Could be a heat soak issue, I suppose.

 

[ThisIsConnor]

The problem was more complex than I thought. Low compression ended up being a worn piston ring and the valve cover leak was from a cracked gasket. I started digging into it myself but quickly realized it was beyond my skill set. Brought to a mechanic and they got everything sorted. All good now though it cost me a bit of time and cash.

 

[gulliverrocks]

I would say low compression or worn valve seals, especially given that oil leaks and hot start issues occur. Sluggish cranking and backfiring when warm can lead to heat related compression loss or failing components like the starter, valves, or rings. A compression test and/or valve inspections would be really good next few steps, gladly these are often fixable issues on a well used but otherwise reliable machine

 

[ThisIsConnor]

I would say low compression or worn valve seals, especially given that oil leaks and hot start issues occur. Sluggish cranking and backfiring when warm can lead to heat related compression loss or failing components like the starter, valves, or rings. A compression test and/or valve inspections would be really good next few steps, gladly these are often fixable issues on a well used but otherwise reliable machine

Thanks for the good advice. Your thoughts on compression were definitely heading in the right direction. That one turned out to be a bad piston ring and gasket that my mechanic handled a while back. It's all good now.