Motor help!!!!

[Snyds]

I searched my little heart out to no avail!

I have a 90 hp 2 stroke Nissan that is being ornery! I've been out the past few days

Day 1 beautiful although no wind... motor worked great starting and stopping all day beaching and anchoring; a great day, mast down, no tilting "trimming" the motor

Day 2, good winds put up the mast. Started like a champ on dock, motored way out, raised it along with sails, sailed for hours (just ask my sun burn), went to re-start and nothing but cranking. Luckily I threw the anchor about 20 ft from rocks but it was too windy to raise sails and when I finally did get em up the anchor was STUCK and the wind was blowing me against it real hard! Motor cranked and cranked using choke, no choke, throttle and reverse throttle EVERYTHING... nothing! dropped sails, drank beer and stared at my arch nemesis the nissan... So I pulled the cover, messed with choke and it fired right up. Motored back to dock, killed it, started right back up... killed it again. Went to get the truck, backed in, decided I'd try it again and nothin! Called it quits for the day!

Day 3 (today). 3 spankin new spark plugs, new gas, and an open vent on my gas tank (oops). Put it in, started with a half a second of crank, best start yet. Good warm up, broke dock, blazed around bashing waves for a bit then beached it (had to go #1). Planned on raising mass at beach but WAY TO WINDY so I left it down. After my relief I went to restart, NOTHING! crank and crank and crank... (PS it was tilted up to beach today since it was a shallow one). Anyhow today was different, it would crank for a second or two, kick to start then die... Finally got it by slowly pumping the bulb while cranking, first time right when it started I let go and it died, second time I kept squeezing after it started, gave it some choke and it kept going, pushed off, bashed some wave, played fun time while docking in 40 mph winds and called it a day. (OK maybe 30 but it's my story OK!?)

Day 4 (tomorrow) HELP!!!! You're the smartest people I know!

Thanks in advance and I wish you all a great (minus engine) couple of days as I have enjoyed (just ask my sunburn)

Steve

[craiglaforce]

A few things to check.
1) The quick connect at the tank fitting can have an O ring inside go bad. Air leaks in and breaks the fuel suction to the motor.
2) Bad primer bulb.
3) check all fuel line connections for an air leak.
4) make sure the deadman kill switch has the plastic fork engaged properly.


Hopefully it is one of those things and an easy fix. Also, there should be both a manual and automatic choke. might try the manual one to see if that helps. just remember to back it off after it starts and warms up a minute.

[MadMacX]

I'd be focusing my attention on the fuel line and bulb. Sounds like the new fuels may have caused problems in the fuel line. Also check to see if you have an air leak in the line or bulb. I saw one fuel line that had de-laminated internally and would swell and just about close the line. Good luck.

Pat

[Wrudd3]

Because you messed with the choke one of the times and it started, then again you pumped the bulb a number of times it started = possible fuel pump?

Try securing the portable tank on the port seat (much higher than the storage area) and see if fuel flows better from there.

Prime it untill the bulb gets hard, start it then play for awhile, kill engine ( preferably at a dock) then attemp to start it up again. repeat a few times.

Good luck,

Will

[puggsy]

The problem could be ETHANOL in the fuel. Do some research and you will find it is bad news in a [damp] marine environment as it soaks up moisture. And eats fibreglass...so what are your tanks made of...It could be as 'simple' as water contaminated fuel...due to the seemingly inconsistent starting. And check your "o" rings and fuel line...Puggsy
Try using a product called '"FUEL SET"....a green coloured additive...keeps the whole fuel system clean of water and any dirt. Puggsy

[bscott]

Sea Foam works great as well.

bscott

[Hamin' X]

There are only 3 things that keep an engine from starting, assuming that it is cranking:

• 1) No/Bad fuel.
  2) No/Restricted air.
  3) No/Poor Spark.

Your symptoms indicate number 1, because of the choke and primer bulb fix. Tilting the engine up could exacerbate the problem, by allowing the fuel to syphon from the engine. Most likely a bad check valve in the bulb, but I would replace the entire fuel line and primer bulb, including O-ring fittings. It will be cheap insurance when you really need that "Iron Genny".

~Rich

[Snyds]

Fellas;

I figured I would follow up... I haven't done anything yet since I lent my boat to the Coast Guard and State Parks for Zebra Muscle training for a couple of weeks, however I have a new fuel line and primer bulb in hand, I think you guys are on to that one. I forgot the discussion last summer about the O-ring at the fuel tank so that will be replaced, the dead man switch is a good idea, fuel pump will be next if that doesn't work, then on up to rebuilding the carb (which I'd rather not do).

As far as ethanol that's a very good idea since in CO we switch to 10 er 15% mix in the winter for pollution control. I filled up twice now with winter gas so I will add the additive that you guys recommend.

As always thanks and I will let you know the issue as soon as I get my boat back

Steve

[Dave X2000 Jac]

From personal "Doh!!" experience:
I have a second inline fuel filter in addition to the one in motor.
Someone (probably me) had stepped on the fuel line into the new filter, bending the little plastic tube.
The engine would start running beautifully, then slowly die.
I had no clue to my problem. That unseen bend in the plastic tube was just enough to keep me exasperated for days.
We finally decided to replace the whole gas delivery system, only to find out it was just a $3.00 filter.
An expensive, dumb, never-to-be-forgotten mistake.
Have you taken a close look at the little plastic tubes of your gas filter?

Dave "Jac" 2000X

p.s. I've also had the kill switch become activated by a wayward knee.
That one took a while to figure out , also.

[pokerrick1]

What craiglaforce said. This is MOST LIKELY a fuel flow problem or the kill switch (this is why I like my 2006 M & Etec which runs without the kill switch inserted if the engine is started without the kill switch in the first place - - - but if the boat is started with the kill switch inserted - - - then removing the kill switch stalls it - - - this has been discussed before). Also CAREFULLY check all the connections between the fuel lines and the fuel tanks - -be SURE they are clipped on properly - - - I have had this problem before accidently dislodging the clamps.

GOOD NWES - - - this is probably a simple inexpensive problem;

BAD NEWS - - - have fun finding it

Ah boating - - - ain't it fun

Rick

[pokerrick1]

Prime it untill the bulb gets hard, start it then play for awhile

I love it when you guys talk dirty

Rick