If you want to do the diagnosis and repair yourself, I would highly recommend you pickup a Factory service manual, available from any dealer, including me. You must run engine carb bowl dry after each outing to avoid this issue when runing 2 strokes outboards. Its one of two problems, either an inline fuel filter is clogged up or the carburetor jets have stuff jammed in them. If the task seems daunting, see a dealer. Then Thread Creation Time to see the new posts.
No, there isn't any mechanical spark advance on these; It's all electronic. I had a chance to spend some time on the engine last night and voila! It dries all the moving parts in the carby float, needle and causes them to stick. Got a new oring and now it idles and runs okay except. Apparently, fresh gas is an absolute must. It has run fine for years, is kept clean and fresh water cleansed after each use.
I have tried the easy things without opening up the cowling fresh gas, playing with the fuel shut off ect what should I try? Why he didn't take it back to the dealer I don't know, but I found the intake was sucking air and did locate a parts manual online should have bookmarked it. Is the stop lanyard clipped in? I replaced the spark plug, drained the carburetor bowl, checked the fuel running through the lines and all seemed fine. The 8hp never had any issues and started right up like a champ and I just want to smash this thing. If it ran for 30 seconds or so, and then quit, you may have starved for fuel or even flooded , of there may be an ignition malfunction. With a little more information, we may be able to help you more.
The forums are open but you may see old threads while the processing is running. This solves part of the gunky gas issue because the only time there is fuel in the carb is when it's running. Fired right up and ran in all different throttle positions like it did when it was new for 20+ minutes. At this point, your problem could literally be anything. I have a nice Tohatsu 3.
There are several outlets in my area a Co-op is one that sell ethanol free gas and I mix small batches of gas to keep it fresh - this solves another part of the gunky gas issue. Any ideas of how to fix it would be greatly appreciated. Thank you Estar for the help, and everyyone else who chimed in with helpful information. Went to my local nissan dealer 18 bucks new one on thwre fresh gas and bam first pull started up and putted perfectly. Use a fuel stabilizer and give the engine regular squirts of carb cleaner. Threads need to be reorganized and it's taking a long time to rebuild. At the bottom of each forum section select Thread Display Options.
A number of months ago it began to sputter and require some playing of the choke to keep it running. I,had the exact same problem with my Nissan 3. Give it time, lots of threads to go through and categorize. There does not appear to be a spark advance on this motor. All prices are subject to change and availability. Happy Boating Re: nissan 3.
Sounds like either the initial timing may be off, or, more likely, the power circuit in the carb is a bit lean. It may be something simple Re: nissan 3. Then it would not start and if it did start would sputter to a stop even when playing the choke. Pour fresh gas in, if doesn't start, probably carb bowl's needle is clogged and varnished, check, clean. Lowest Price Gaurantee Online, customer must submitt identical model number, model year along with proof of competitive offer by fax to Amber Marine Lowest Price Guarantee to 949 336-0017.
. But, it's all auto-gas and that wasn't particularly stable, even 40 years ago. No connection from the throttle linkage to the spark like I am used to on older motors. So I traded a running nissan 8hp for this 3. Yes we know about the old posts in forums.
Aviation gas is stable, but I find that some two-stroke engines just don't run as well with it unless you re-jet the carb. With all that said, I'm firmly in the camp that a carb rebuild will do wonders. Would be advisable to wrap 2-3 teflon turns on tank neck prior inserting new fuel cock back in, clamp will close better tight at neck and avoid fuel spills specially during summer when fuel heats and vapors up more. Database work was done to update the forums. I turn my fuel valve to off and run the engine until it's out of gas. These motors are almost indestructible.
How can we tell if its fuel-related, no spark, or very low compression? In any event, it will be necessary to remove the motor cover to inspect and diagnose the problem. What does the plug look like? Is the fuel cock filter clear? I drained the fuel completely and added new fuel with the correct oil mixture and still cannot get it to start or run. The result I am seeing is if you advance the throttle too quickly it dies, but if I advance it ever so slowly then no problem. Had to rebuild the carb. Having to choke the engine once started is a giveaway the jets are blocked.