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Enduro Engine 4 stroke (including EFI & Exhaust) 4 stroke engine, EFI, and exhaust discussion |
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Thread Tools | Display Modes |
#1
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Blue smoke
Hi,
I'm getting blue smoke from my 2006 FSE. It happens when hot, nothing when cold. If I let it idle for a while and blip the throttle there's a big puff of smoke. If I rev it up and down there's a small amount of smoke both revving up and down. If however I just hold the revs high there's no smoke or at least not enough to see. Is this piston/rings or valve guides/seals? I'm thinking a new piston and rings? I should add there is no oil pool sat in the airbox, checked that. Last edited by iancp5; 05-17-2010 at 11:39 PM. |
#2
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Maybe try a leak down test??? But blue smoke should point towards rings, valve, guides and or seals......
Good Luck
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Rick 99 EC 200 06 RM 250 AMA D36 375X OTHG 375S ***Thanks for the support : Twin Air /O'Neil Racing / Race 100% / Matrix Concepts / ODI / Mika Metals |
#3
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Check that you didn't overfill it. At idle the c/case will tend to fill up and may cause some ring blowpast. The 06 sight window is pretty useless as a level as it is full with 1 litre of oil in the engine so it is easy to make a mistake when filling it.
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06 Gas Gas FSE 450 USA 07 Gas Gas FSR 450 UK with motard and dirt wheels |
#4
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Good point. I'll check.
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#5
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Took the oil level right down and still smokes. Have ordered a new piston kit and valve guide seals. Maybe I should get the guides checked too - is there a way I can tell? I only have a simple digital vernier caliper. Have seen people using dial guages but how do you mount one on an aluminium head? Not even sure how much play is alowable. Wondering if I should just take the head to a specialist and have them fit new guides and maybe valves.
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