Wrong gas in 2000 Yamaha wave runner. Need help!?

Question

Im looking at buying a 2000 Yamaha wave runner. It’s a 2 stroke and the previous owner didn’t add oil/ used regular gas and it won’t run. What exactly could be wrong with it now and how would I fix it?

Any idea on how much it would cost to fix? (Mechanic vs doing it myself)

Answer 1

how about putting in new fuel with oil in it , can be anything you thought of that , see a marine mechanic you fool ..

Answer 2

Nothing for it but to have the fuel tank pumped out!

Source(s): My mom putting diesel in our gas van.

Answer 3

no idea, as we have no idea of your mechanical knowledge

Answer 4

Pistons & rings seized due to lack of lubrication. If lucy may be able to free them up with a premium penetrant but almost certainly some loss of performance & engine life. If you're not lucky the crankshaft bearings are U/S as well. New engine time.

Ring round & find the price of a new engine & offer him his asking price minus that for it

Answer 5

I wouldn't buy anything from a seller that is that stupid.

Answer 6

It would run until the engine seized up due to lack of oil. It is junk.

Answer 7

The pistons are likely seized up in the cylinders. Price out a new motor.

Answer 8

You better be getting it for free, then look for a new engine, rebuilt runs about $1500

Answer 9

Could be one of a hundred things wrong with it. You don't have a clue so trying to fix it yourself would be pointless. How much money can you spare if it turns out to be junk?

Answer 10

It's likely that the pistons, piston rings, and cylinder sleeves have been damaged.  In some cases, engines that have "frozen" due to overheating (either from running with no oil added to the fuel, or from fuel that has more alcohol that the manufacturer says can be tolerated) can be freed up with a super penetrant...but they never work quite right again.  Presumably you want a WaveRunner that can perform reliably at all throttle settings.  So you would have to actually have the engine removed from the craft and have the damaged parts replaced.  I can't estimate the cost of that, but it'll certainly be substantial.