E2S > Brands of 2-Stroke > Yamaha > Blaster

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Old 06-13-2008
lancem91 Offline
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Default fouled plug

ok. so yesterday, i bought a new plug cuz the old one had fouled out, and today, it already fouled the new plug. what is my problem? i'm running 4 oz to the gallon of gas, but i think i may have added a little too much oil. could this be my problem? and also, what kind of spark plug r ya'll runnin? as in what is the brand and number on the side of it?
thanks
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1996 Blaster w/ bore and FMF Gold Series

Last edited by lancem91; 06-13-2008 at 01:29 AM.
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Old 06-13-2008
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your jeting is probley off
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Old 06-13-2008
lancem91 Offline
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but i think its the stock jets
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Old 06-13-2008
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did you rejet for your fmf?
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2003 YAMAHA BLASTER aka "THE ASS BLASTER"
fmf, reed spacer, boyesen reeds, 14/38 gears, oil block off, black ac bumper, desert grab bar, skid plate, rear flattrackers/front hole shots, removed TORS, custom seat cover, duncan graphics p.b. block off...


1991 YAMAHA SUPER JET
hydro turf, blowsion chin pad, solas 13/17 impeller, Rule 500 bilge pump, flush kit, primer kit, pro tech ride plate and intake grate, msd ignition.....few other lil things ....
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Old 06-13-2008
lancem91 Offline
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no. i got it from my uncle with whatever it has on it.
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Old 06-13-2008
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jetting is off, I run a BR9ES, NGK plug in my YZ80 and it goes good and doesnt usally foul out any more.
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Old 06-13-2008
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Is the plug burnt, or wet and black? Also are you premixing the oil, if so is your oil injector thingy removed? Also as said before, check your jetting. For plugs, not sure of the plug number but get NGK.
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Old 06-13-2008
lancem91 Offline
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like i said, i mix my oil. i don't know what the plug looks like but i'll have to check it out. i dont have the quad with me right now. and also, someone told me to run a 260 main on the jets. does that sound ok?
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Old 06-13-2008
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Is your oil injector disconnected and a block off installed?
about jetting, this is from FMF's website
We know how difficult jetting can be sometimes, that's why when we test our exhausts we also adjust the jetting to see what works best. Sometimes stock jetting works fine, other times a slight adjustment is needed. Here is what we've come up for in our area and is a great starting point for you as well. There are way too many variables in jetting to give you a recommendation that works perfect. Use these specs for a reference to help aid you with your specific bike. We developed these specs with a 32:1 fuel to oil mixing ratio of a 50/50 mix of race fuel and super unleaded, 0 - 1500 ft altitude at 70 degrees outside temperature.

Your choice: YAMAHA --> 1996 --> BLASTER


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Jetting Information
Main Jet: 260
Pilot Jet: N/A
Needle: STOCK
Needle Position: 3RD
Power Jet: N/A
Air Screw: 1.5
Fuel Screw: N/A
Comments: Remove airbox lid snorkel
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Old 06-13-2008
lancem91 Offline
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thanks zilla. so the needle position would be the third from the top or third towards the bottom of the needle???
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