What to do when co-authors want to submit manuscript for publication and you think it still has problems? I am a junior member on a research project. We have written a paper. I feel the work is not ready for publication and have issues. We have discussed the issues, and other members of the group including the lead author agree with me that there are issues. But the lead author who is more senior is too eager to get the results published to the extent that he is ready to mislead the reviewers/readers by exaggerating and misrepresenting the partial inconclusive results to get the paper accepted. I don't think I can convince him to allow more time for the project to reach a more satisfactory stage before publication. I am rather junior and have limited say on the project. I am new to the field of the project, and the senior author is established in the field and publishes several papers in top venues each year. Other members of the project are his students.

We don't have conclusive evidence for one of the central claims in the paper. It might turn out to be false under more experiments. The lead author, however, believes it is correct even though he agrees the evidence we have is not sufficient. He wants to publish the results and the idea as soon as possible, but accurately stating what we have and what we don't have will make the acceptance unlikely at this point. He is fine with getting the flawed results published and then continuing to work to fix the issues for the later publications.
I am not comfortable with my name appearing on the paper. 

One option is to ask for the removal of my name as an author and to be mentioned in the acknowledgments. However, I have worked on the project for a considerable time and would like to get credit for my contributions, and I don't feel just being mentioned in the acknowledgments is good enough. 

What would you do if you were in this situation?
How do you deal with major disagreements in writing a joint paper?
Would it be helpful if I post a different edited draft copy of the paper online where the claims are more accurate in my view?
I wanted to add a fourth possibility to @artalexan's nice answer that might be more diplomatic:


Make the paper technically correct with the results you have (even if preliminary) and submit to the current venue. 


The major problem with submitting the paper is that it is dishonest, not that it is preliminary.

If the paper can be made technically correct and honest -- even if the results are preliminary -- it would be fine to at least submit it and let the reviewers judge if it is mature enough.

If you are a co-author, you should have the power to edit the misleading text. If the main author is stopping your efforts to do that, then ask to be removed from the paper.

Of course if the results themselves are incorrect (rather than preliminary) there may be no saving the paper.



On a side note, the attitude of the senior researcher in question towards publishing may be productive in the short term (getting some initial papers published quickly by misleading reviewers), but it is utterly counter-productive in the long run. Having a reputation for sloppy results/writing will seriously harm the trust that reviews/readers have in your paper ... and reputation is so important in research! I don't know your situation, but if the researcher shows no inclination to change their attitude, try to put distance between yourself and them.