Your correct they would not move. I didn't know you ever pulled the valve cover plugs
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Registered User
Your correct they would not move. I didn't know you ever pulled the valve cover plugs
2003 400ex
powermadd star series handguards w/wrap-powermadd gauntlets-elka stage 3 front shock-tusk nerfs- 11:1 piston-full fmf-gtt xc link-oury grips-909 bars-precision anti-vibe clamp-K&N filter-ccp steering stabalizer-oversized oil tank
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I just pulled the lash inspection covers to make sure I was getting valve movement. Once I find my feeler gauges, I'll check the clearance and then pull the valve cover and check the timing. I think it's in the valve train.Originally Posted by Drifterboy3
Registered User
We'll make sure you set the engine to TDC before you pull the valve cover. Otherwise you can strip bolts in the head.
2003 400ex
powermadd star series handguards w/wrap-powermadd gauntlets-elka stage 3 front shock-tusk nerfs- 11:1 piston-full fmf-gtt xc link-oury grips-909 bars-precision anti-vibe clamp-K&N filter-ccp steering stabalizer-oversized oil tank
Live To Ride,Ride To Live
I have the same problem with a friends 300ex that he brought me to fix. It's getting everything it needs, spark, air, fuel is getting in and out of the carb., valves are in spec, has good compression, new plug, fresh gas, wiring is good, kill switch isn't on. Damn thing still wont start for ****. Some how the carb is getting fuel into it and out of it, the valves are opening and closing yet fuel isn't getting into the cylinder. I took it to a friends to see if he can find out what's wrong with it. I ran out of ideas, other than ether, but that wouldn't help the main problem.
2002 Ford Ranger (Red, Westin Brush Guard, K&N CAI, Clearance Lights, couple other little things)
2012 RAM Power Wagon (Black, Line X, Weathertech, Cover King, Flowmaster, Tinted, DiabloSport Trinity, Rertro Shop Custom Headlights, Leveled)
2006 450R (MX/Dune/QFMX Machine)
2005 407EX (XC, GNCC, Harescramble Machine, Not much left that's stock, PICS)
R.I.P. Caleb Moore, you will not be forgotten.
R.I.P. Tyler Saxton, I'll never forget you bud.
Registered User
Maybe really low compression....takes compression to suck the air and fuel in.....
1984 Honda 200M ATC
1985 Honda 200X ATC
1986 Honda 200X ATC
1999 Honda 406EX....11:1, Web Cam / Hardened rockers. Ported. WB CDI. CT Racing header. WB E-Series slip on. Lonestar swinger.
2001 Honda/KTM 520 Hybrid Quad. Its like a 400EX but twice the horsepower.
2014 Artic Cat Wildcat Trail XT
Live To Ride,Ride To Live
Yea, I didn't check it with a tool but it seemed like it had decent compression when I stuck my finger in the spark plug hole, but I guess I wouldn't really have anything to compare it to. My friends going to see if it will fire or run with ether, then go from there. My friend that brought it to me said the guy he bought it from hit a water hole and it died and wouldn't get started again. They managed to pull start it in 3rd gear and it ran for a couple seconds and died, hasn't started since. That makes me think a wet connector or something electrical. Anyway I don't wanna thread jack, but thanks for commenting Dragon!
2002 Ford Ranger (Red, Westin Brush Guard, K&N CAI, Clearance Lights, couple other little things)
2012 RAM Power Wagon (Black, Line X, Weathertech, Cover King, Flowmaster, Tinted, DiabloSport Trinity, Rertro Shop Custom Headlights, Leveled)
2006 450R (MX/Dune/QFMX Machine)
2005 407EX (XC, GNCC, Harescramble Machine, Not much left that's stock, PICS)
R.I.P. Caleb Moore, you will not be forgotten.
R.I.P. Tyler Saxton, I'll never forget you bud.
Registered User
So I finally got time to check the valve clearance. There was none on any of the valves. So I adjusted them to the proper clearance. Tried again and still nothing. Guess it's time for the head to come off. Would the fact that there was zero valve clearance give any clue as to what's wrong? I'm getting low on patience and time (I have race season starting in about a month). Again, advice is appreciated.
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