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Desert Pipe = Sparkplug fouling

Posted: 01:02 pm Jun 10 2019
by Hendrikder
Good Day everyone

I would just like to know if a desert pipe (FMF Gnarly) could cause my spark plug to foul when I am riding technical terain at low throttle for a while?

I think my jetting is good for my current weather and altitude.

Thanks for the help

Re: Desert Pipe = Sparkplug fouling

Posted: 03:00 pm Jun 10 2019
by KDXGarage
If you are riding in real slow terrain with low throttle situations, consider a one step hotter spark plug. Also "clear it out" on occasion.

I would not be looking to blame the pipe at this point.

Re: Desert Pipe = Sparkplug fouling

Posted: 08:35 am Jun 11 2019
by SS109
I run a desert pipe and have done quite a bit of nasty hike-a-bike stuff and never fouled a plug.

Re: Desert Pipe = Sparkplug fouling

Posted: 08:47 am Jun 11 2019
by KDXGarage
SS109, which heat range plug do you run??

Re: Desert Pipe = Sparkplug fouling

Posted: 11:23 am Jun 11 2019
by tman
Jetting is wrong.

Re: Desert Pipe = Sparkplug fouling

Posted: 03:54 pm Jun 11 2019
by kdxsully
KDXGarage wrote: 03:00 pm Jun 10 2019 If you are riding in real slow terrain with low throttle situations, consider a one step hotter spark plug. Also "clear it out" on occasion.

I would not be looking to blame the pipe at this point.
+1

Re: Desert Pipe = Sparkplug fouling

Posted: 04:40 pm Jun 11 2019
by SS109
KDXGarage wrote: 08:47 am Jun 11 2019 SS109, which heat range plug do you run??
A standard NGK BR8ES.

Re: Desert Pipe = Sparkplug fouling

Posted: 05:30 pm Jun 11 2019
by Molly's 70
Yup, you have to turn the screw & clean the engine out every so often. When it get "blubbery" clean it out.

Re: Desert Pipe = Sparkplug fouling

Posted: 12:51 am Jun 12 2019
by Hendrikder
Thank You very much for the help

I will try a hotter spark plug then, I am running the standard BR8ES I will then move to a 9.

Thanks

Re: Desert Pipe = Sparkplug fouling

Posted: 12:58 am Jun 12 2019
by SS109
A hotter plug in an NGK would be a BR7ES. Smaller # = hotter plug/larger # = colder plug

For the record, my bike never loads up/gets blubbery and doesn't need to be blown out when riding. I would bet you need to tune your jetting. Have you followed the jetting guide? Have you done any plug chops to confirm your jetting?