I have a 1994 70hp evinrude on a 16' sea nymph, after planing out and trim set like it should be if I give it more throttle it pushes the bow in the water to the point water starts coming over. If you trim it up nothing changes. Help please.,

What prop are you running? Sounds like it's just not doing it's job.

I will have to check in a little bit

I can't find any numbers on the prop.

probably have to take the prop off and get numbers off of the back of it....

I see 13 v or x 19 and then I see 38 4142

I just looked in the owners manual and it says run a 13 1/4 x17

that set up should be running a 15p at least and most likely will push a 17p but it does not sound like a prop issue to me. at speed, trimming all the way up can you blow the prop out of the water? kinda sounds like a tilt/trim issue

I would try and find a 17p to try, that 19p is too much prop...

check you transom too

Ok, let's reel this in a bit....
Better the details, the better the answers.
1. do you have power trim on that motor? Not clear from your description
2. Do you have a tach? If so, what's it reading at full throttle/trim? THAT is the number that will tell all.
3. The prop you have now, stainless or aluminum?
4. Are you throwing a big roostertail off the motor? Is the steering really tight at full throttle or is it a little loose?
5. How long does your holeshot take? Seconds from dead stop to on plane.

Without that information any advice is just a guess.

My check for a water logged hull.

Thanks for the replies guys. Yes I can blow the prop all the way out of the water. And the trim works. It is power tilt/ trim by the way. The transom has been reinforced with 1/2" thick plates of aluminum and is extremely stout. I don't have a tach so I can't see what I'm running. The prop that I was running was a stainless prop. Not throwing a big rooster tail. The steering is pretty tight not real loose but not so tight I have to man handle it. My hole shot is probably around 5-7 seconds. Never timed it but doesn't take a long time. Now it takes longer with 3 or more people.

I found an aluminum prop that is the size that the manual calls for. Gonna try it tomorrow and see what happens. It is a 13 1/4x17.

prop pitch isn't gonna push the nose down on that rig, angle of thrust is the only thing that will, sure, the 19p he has is too much prop but should only effect rpm's and speed, the way i read his post leads me to believe he does have tilt/trim