Whoa Hold the Boat!
OK, at this point we cant really make any logical deductions about the new pump. One was reported that it failed, but don't know any info on why it failed. All the info on that one is second hand knowledge from a person who sits behind a desk. It could have been dropped on the floor of the hanger as it was being removed from its packaging for all we know. We have not heard from any RV12 owners on this form that a new pump has failed. Until then the vote is still out on the new pump!
However we have had many documented failures of the old pump.
Only the Facts on the old pump:
1. Some last longer than others.
2. When failed they sometimes leak fuel.
3. When failed the engine keeps running
4. When failed the engine will not develop full power and runs ruff.
5. When failed no fires have occurred yet.
6. When failing the fuel flow goes way up and the fuel pressure goes down.
7. Rotax came out with a new pump which indicates by deduction that they probably had problems with the old pump.
8. At one point Rotax quietly offered a half price deal on the new pump if you wanted to buy one and send in your old pump. But for some reason the guys on the RV12 form who found out about this
top secret unadvertised deal didn't feel it necessary to let all the other RV12 form members know about it.
9. Now that half price deal is gone.
Last but not least, please dont take a cheap shot comparison that my different manufacture engine is better that your Rotax engine. If you think so then start a new thread and we will flame each other endlessly by comparing Service bulletins about cylinders and crankshafts, etc, etc.
It is what it is. If you dont like dont buy it.