My yamaha dirtbike will turn over when kick starting, but seems like it has no compression. Motor has been rebuilt not to long ago by dealer(3months ago). It ran fine until i turn it off because i heard something knocking. Try'd to turn it back on and never did start. I parked it on my driveway and there was anti-freeze on the ground coming out of my bike??? Think it might be the rings,bottom/top end, water pump maybe out which cause the motor to mess up????--- and yes it had gas in it (Mixed 32:1) checked the spark plug!!!!(new one). I'am about it tare it apart but needs to know if anybody knows what it might be.
P.S I don't race it- its just a weekend toy to ride when i'am not working.
2007-07-08 16:13:40 · 5 answers · asked by Texas Diesel Power 2 in Cars & Transportation ➔ Motorcycles
Most likely it blew the head gasket.
Coolant leak and lack of compression.
Bring it back to the shop.
2007-07-09 05:43:38 · answer #1 · answered by guardrailjim 7 · 0⤊ 0⤋
If the motor was rebuilt such a short time ago it should not be failing on you now.... get up the dealer.
Maybe the L.E.B? a rebuilt normally consists of Heaad gasket, base gasket, gudgen pin, circlips, piston and rings. Do you know if they put a Wisco in it or Pro X or Genuine?
With the coolant there is normally O/f hoses at the bottem.... Have you taken the head of? how are the rings? is there any wear marks in the cylinder? Did they put a new sleeve in it?...
Or even the B.E.B as you have already said,,,, The list can continue..... But you wont know untill you start pulling it down.
But go back to the dealer, its to soon for top end.... etc
2007-07-08 23:24:28 · answer #2 · answered by 1 kidlet & due in 9 weeks 4 · 1⤊ 0⤋
The power valve stops could have worn to far causing the piston skirt to hit the power valve and break the piston.If this has happened I advise a complete tear down to clean up and repair.
2007-07-09 00:41:19 · answer #3 · answered by (A) 7 · 1⤊ 0⤋
Get a complete gasket kit, it needs to be rebuilt.
2007-07-09 01:37:38 · answer #4 · answered by barry m 5 · 1⤊ 0⤋
take it back and let them deal with the headach.
2007-07-09 06:23:48 · answer #5 · answered by bmxer13322 2 · 1⤊ 0⤋