changing plugs in 2 stroke vs 4 stroke?

[Martin Blair]

how often do you chagne plugs in a two stroke? in my 400 i change plugs every riding/racing season evne thoguht it doesnt need it i just do, but how often in a two stroke do they foul plugs quickly?

[4wheelboy]

um on my old kx it would be lik a new plug evry ride:(

[tants]

ive yet to change a plug and i had my 250r since last august :confused2

[250x#93]

My jettings off but i clean my sparkplug and put it back in every month or so:o

[honda400exrider]

Over the course of two and a half years I replaced my sparkplug once:D

[stocktires]

How often you change your plug is determined almost 100% on your jetting. If your jetting is perfect, you'll rarely change a plug on either (a couple times a year).

[hondafox440]

My jetting is perfect on my CR, and I have never fouled a plug. After a year and a half of ownership, I have only changed the plug twice, just because I felt like it, and with it sparking over 100 times a second, I figure something in there must wear out. I've changed the plug in my 440 twice as well, and owned it for 2 years.

[310Rduner]

I replace the plugs on my R about once every two months just because... I can...:huh

I have Never fouled a plug tho:o ;)

once a season

[AtvMxRider]

I've changed the plug on my 400 once since I owned it. It didn't need it then but I changed it anyway.

[Narly R]

well ive had my share of changin plugs to say the least! I had trouble with my jetting....:rolleyes:

[micah]

what are the signs that it needs to be changed?

[400exrules]

sry im stupid but, yall talkin bout spark plugs ?? :confused:

[Rip_Tear]

Originally posted by 400exrules
sry im stupid but, yall talkin bout spark plugs ?? :confused:

Yes ;) I have never had to change a plug in the 400 or the 300, or my sled, but I have changed them because they were flooded.

[Glow Plug]

Originally posted by 400exrules
sry im stupid but, yall talkin bout spark plugs ?? :confused:

no were talking about exhaust pipes lol

jp dude


I haven't ever had to change a plug in the bayou .....

[Chanman420q]

2001 400ex............ running stock plug :p

[ryanh250ex]

Originally posted by 400exrules
sry im stupid but, yall talkin bout spark plugs ?? :confused:

nah we talkin 'bout butt plugs :confused2

oh yeah. i'm running on stock plug. how do you correctly set the spark plug gap?

[Bean]

i always carry 3 around, plugs can go bad, 2 9's and 1 8 for the R

[stocktires]

Originally posted by Bean
i always carry 3 around, plugs can go bad, 2 9's and 1 8 for the R

Bean,
Are the 9's colder or hotter plugs than the 8's? I'm running an 8 right now and I'm fouling it every 5 minutes, dunno if its the jetting, or too cold of a plug...
It's wet-fouled, So I'm gonna try and go a lil leaner on the jetting (105 race gas ain't cheap, lol)

[Chef]

Originally posted by stocktires
Bean,
Are the 9's colder or hotter plugs than the 8's? I'm running an 8 right now and I'm fouling it every 5 minutes, dunno if its the jetting, or too cold of a plug...
It's wet-fouled, So I'm gonna try and go a lil leaner on the jetting (105 race gas ain't cheap, lol)

9's are colder I believe.

I change mine every 2 races...sometimes after just one race depending on how it looks. Gotta be sure you're gettin the correct spark. :D

[Bean]

9 is colder, if it is fouling an 8 in 5min, i think your jetting is wrong

that, or you did not buy high proformance stickers for your plastic, and your plugs dont have gold on them, lmao