Motor Woes
 

Yesterday while out on the water I got stranded for the second time out of the 3 times I've taken the boat out since I got it. The first time was last week when I was trying to drive it onto the trailer.

The motor runs great but yesterday we stopped to swim for about ~15-20 mins. Then when we decided to do some tubing the motor would not fire back up. Ususally when it does this I put the throttle fully forward in neutral with no choke and it fires up and revs and then I bring it down and it'll idle so-so (kinda rough)

Any ideas? It's a Mariner 150hp and I think it's running a little rich at idle. It has a hard time idleing and when the motor is trimmed in the fully up position gas will leak from the carbs.

Please help me!

Here's a short video of the V running at 42mph. Sorry It's sideways I haven't figured out my new iPhone out yet :nut:

Edit: Video is on the 2nd page.

have to ask the obvious as so many peole neglet to pump the primer bulb before starting the engine. Can you pump the bulb till it gets firm? or will it keep pumping?

That's a good point, I forgot to add that. I always prime the bulb when I first start it. I did notice that when it wouldn't start I could prime it with the bulb till it was hard, then try to crank it unsucessfully, but I could pump it and it wouldn't be hard.

when you do get to crank after it lets you down, does it blow a lot of smoke, like it was flooded. ?
when it sits overnight, wil it fire right up the next day?
have you checked compression? the big 3 are fuel, fire & compression, so you got to start eliminating something.

1. A little smokey, but not like when it's cold.
2. Yes!, and without using the choke.
3. Compression is 100-120 on all 6.

I just turned my laptop side ways!! But were was the sound?

you have a 20 lb difference between cylinders?

Avg is 110 psi and +or- 10. But it's not like 120,120,120,100,120,120.