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Engine/EFI/Drivetrain Discuss engine, fuel injection, air intake, and drivetrain modifications here

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Old 10-16-2010, 02:01 PM
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Have to pull start, blows blue smoke, any answers?

i was at haspin acres, cruising and my 06 ltr shut off, pull started it cause it wouldnt refire under its own starter, ran fine for ten mins when to go up a hill it lost power and killed it, pull started it again, huge puff of blue smoke shot out the exhaust and a little around the headpipe and i would have to keep it wide open to mid range just to keep it running and i killed it and noticed there was about a quart of oil in my airbox, its under warranty so im going to send it in, but can somone give me an idea on whats wrong?
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Old 10-16-2010, 03:46 PM
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You have a pull start?
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Old 10-16-2010, 04:37 PM
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That happened to me. My piston broke in half!
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Old 10-16-2010, 04:58 PM
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bad rings, scored cylinder, cracked piston, blown head gasket.


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Old 11-18-2010, 01:04 PM
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the first time that happened to me the whole piston skirt dropped into the case but i caught it in time so no bottom end damage but at my last race my quad bogged out then filled the track with smoke and i havent pulled it apart yet but i am sure the rings are gone in it because it was a new motor


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-2009 ltr 450 ltd red pro armor kilswitch, protaper atv lows, houser +2 houser stem, houser sli-cast fox evolx/podiumx, crbm, yoshi full system, houser pro bounce nerfs, pro armor bumpers, billet case saver gas cap and p brake block off , hinson billet clutch hub, clutch plates and springs, hiper tech 3's maxxis razr cross fronts and razr xm rears
-07 ltr 450 yellow 493 weisco big bore, pcv with auto tune, hinson clutch plates and springs,yoshi slip on, yoshi kickstart, pro armor fat pegs, pro race grab bar, dominator bumper, pro taper atv lows, blue beak, renthal o-ring chain, moose sprockets and discs, tag railer, fuel shift pin, razr mx rear, itp quadcross fronts, pro armor kill switch blingstar sprocket and disc gaurds, hotcams, currently dropped a valve and missing the pipe.
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Old 11-18-2010, 03:45 PM
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could have dropped,burned,broke an intake valve
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Old 11-18-2010, 04:52 PM
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Quote: Originally Posted by SchultzLT1 View Post
You have a pull start?
I believe he means pulled it behind someone else while in gear....


2008 LTR 450 (black) - DMC Afterburner quiet series full exhaust, Yoshimura Cherry Bomb, UNI air filter, Outerwears airbox lid, Factory Suzuki MX front bumper (painted black by myself), Shock covers, side frame guards, Pro Armor Fat Peg Nerfs (black), Trail Tech Vapor, Trail Tech 1 1/8 dashboard, ProTaper ATV Mid bend Contour bars ProTaper pillow top grips, Maier plate holder, red PowerMadd Stars with mirrors and hand wrap, electronics guard, Superwinch 1500lb winch, Pro Armor full chassis skid plate, rear swingarm skid plate, and A-Arm guards. Also XC tire setup - 20" rear/21" front ITP T-9 Pro Series GPs on MAXXIS RAZRs.

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