'01 Yamaha 50 hp - crank but no start???

SmokinBarrel · #1 February 18th, 2004, 12:39 PM

2001 Yamaha 50hp. For some reason the motor will not crank over!! I've checked everything leading to the gas filter: Gas tank, bulb, line, connections and everything is working! I was told that there is a "needle" in the carberator that might be stuck not allowing gas to feed to the carbs?? Another thing I noticed, I was putting the boat in the water, and when it wouldn't start, there was no oil in the water from flooding the carbs? Usually, when you flood the carbs, oil leaks to the water surface.....none! Any suggestions??? Reason I ask.....I know it's something simple, and I hate to spend $200 - $300 dollars on repair or something simple. Anyway, thought I'd try askin first. Any help would be appreciated! One more thing, could it be the spark plugs? I'm not sure, but it was running, and then it wasn't!! Furthermore, not 2 months prior to this it started, and I ran it for 5 minutes.....it was a bit hard to start, but I got it started.

Thanks in advance for any advice

Elmer Fudge · #2 February 19th, 2004, 08:04 AM

Do a compression test,check for spark and post results

P.S also check the kill switch

zzzzz · #3 February 19th, 2004, 09:08 AM

is your safety lanyard on ??(gets everybody at least once !)

rodbolt · #4 February 19th, 2004, 01:39 PM

hello

post a model

this could be one of many 50 hp models made in 2001. could be 2 stroke or 4 stroke. we need to know. post back and we can try to help

SmokinBarrel · #5 February 19th, 2004, 05:11 PM

I've checked everything. All looks good, but no fire.

Oil injected, 2-stroke.

Thanks for the input.

rodbolt · #6 February 20th, 2004, 01:45 AM

hello

remove the carb drain screws. if you have a carb with no fuel in it due to a needle stuck shut you will see it cause no gas will drain from it. extinguish all smokes and disconnect the battery before flushing and wash the cowl with soap and water and allow to dry. gasoline is an incredibly dangerous product that we take for granted to often.

good luck and keep posting

PS on some yamaha engines if the manual choke gets pushed in to far it locks the choke open.

Hoggy · #7 February 21st, 2004, 06:14 AM

Quote from rodbolt ...PS on some yamaha engines if the manual choke gets pushed in to far it locks the choke open.

That's for sure, found this out through trial and error ... ref 55hp Yamaha Original 2/stroke motor :o (

SmokinBarrel · #8 February 25th, 2004, 07:54 AM

Aaaannnndddddd the problem was......water in the tank! F**k! Can you believe that! I didn't think that was it, but it was. We hooked good gas up, and she fired right up!! Whew! That damn water, what a pain in the arse! Any suggestions as to minimize water or eliminate it in the tank!

-Dennis