Question about BIT Garden
Started engine 50 selva four stroke up this year and was getting a miss firer called out a mobile marine Macanic out we drain all the fuel tank and drained carberetors and put new spark plugs in and still the same he suggested we take carberetors off and clean them which he did bit better he then said give it a run on the water took it out runs fine at 2500 revs the go faster and it just splutter and don't want to go any faster it runs fine at 25000 revs any help out there please?
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Posted on Jan 02, 2017
Pull the carburetor and clean it for staters.Be sure to change oil any little bit of moisture in the crankcase will let it smoke white by seeping by the valves and piston rings.Also put a little small amount of dry gas in the gas tank to rid all of the water that may have been left in the tank. I some of this will help you.
Posted on Mar 19, 2009
I always replace the air filter if its a paper element, and even if its a foam element I replace it rather than clean it. That said, engine stumbling is rarely and air flow problem - but it could be, so having a new filter assures no air restrictions.
I would drop the carbuerator bowl. On the bottom of the carb, near where the fuel line comes into the engine, should be a nut. Removing this nut allows the bowl to drop off the carb. Some engines the bowl screws off, you will have to look at the bowl. Often the bowl has sediment or sludge buildup inside. Cleaning the bottom of the bowl can prevent that sludge/sediment from plugging the intake tube. Even on newer mower models this is a common problem, the gas line tubing interior breaks down and the inside of the tubing can start degrading - ending up in the bowl as sludge.
After cleaning the bowl, I would add one ounce of fuel line cleaner to a full tank of fuel and run the entire tank of fuel. This will clean any deposits or "varnish" from the interior carb parts. Doing this and the first step will assure your carb is clean and functioning.
If that doesn't help, then I would look at the spacing between the magneto and coil assembly. If you want to do that I'd like you to write down all the model numbers and serial numbers on the engine nameplate, that way I can give you specific directions.
Hope this helps,
Posted on Mar 29, 2009
SOURCE: 1996 Mercury 150 Nitro EFI
Dont have the manual in front of me...recollect that there's two types of warnings. The pulsating warning is oil (starts with 30 minutes of oil left) or the fuel filter (or sperator, something like that) may have water in it. Running outboard with cover off, is a little black box that would have a red light lit if that's the case. If oil full & no red light, may be oil injection system...would also check to make sure lines aren't pinched, etc. Mine has been specific to oil the two times its gone off.
The full non-pulsating is engine overheat. Not sure beyond that.
Not much, but hopefully gets you going.
Posted on Jun 23, 2009
Hi if it is older than 2 years it will need a new diaphram and gasket under carby you will also need to clean out the fuel bowl in the top of the tank this should fix your problem.
Posted on Jul 25, 2009
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