I have a 15.5 Briggs and Stratton engine. I used old gas from last year without thinking. Now I have problems with the carburetor. How can I fix the problem. T emptied the old gas and put in new. the gas will not flow through the carburetor.

About 625 results (0.89 seconds) Search Results

Why wont my engine start - Briggs & Stratton

www.briggsandstratton.com/.../why-wont-my-engine-st...

Briggs & StrattonThe most common reason an engine will not start is due to an interruption in fuel ...(such as Briggs & Stratton carburetor cleaner to clean carburetor parts and body. ...gasoline be purchased in small quantities, not more than a 30 day supply. ... that canflood the engine, or cut the air supply enough that engine will not run.Missing: inch ‎major

Information about the Carter, Kohler and Walbro Carburetors

gardentractorpullingtips.com/carbfuel.htm
Information about the Kohler Carburetor, Various Fuels and Fuel Systems. ... (Updated 5/23/15); Repairing Various Older Briggs & Stratton Carburetors. ... If used on a smaller engine, due to the larger venturi, the engine will not receive the ... which converts to 1.181 inches (30 ÷ 25.4 = 1.181"), but actually measures 1.200".

Notes on the Troubleshooting and Repair of small Gasoline ...

www.repairfaq.org/sam/lmfaq.htm
May 19, 2015 - Timing; Lawn mower will not start after the blade hit an obstruction; Flywheel ... on Briggs and Stratton repair; Experience with Briggs & Stratton carburetor .... NEVER attempt to run a gasoline engine indoors. ..... For 2 stroke engines, special oil (not the usual 10W-30/40 type motor oil, nor WD40 or 3-In-One!) ...

Briggs & Stratton - YouTube

Does that model have a suction feed carb? I am not familiar with the model, but if its a plastic like carb that sits right on top of a metal tank, they usually have a diaphragm that needs replacing after awhile. They are very inexpensive and usually fix those types of problems. If not, if you have a float bowl style of carb, perhaps the jets are dirty. Sounds like a fuel flow problem to me. I would definitely try new fuel if you suspect the gas to be old.

the float may be gummed up. or the needle is plugged up.
you need to clean the carburetor, old gas left in the carburetor turns
into shellac and gums up in side. you need to take it apart and clean it.

hello dave, the problem is compression to low,you need 60 to 130 lbs to run engine,check for blown head gasket,or bad rings,or a stuck open valve,hope this helps,,

Here is the long answer with everything we learned while using a power washer twice a day for years::

It sounds like could be one of the problems listed below or a combination of those things.
1) The exhaust is partially blocked. Check the screen covering exhaust port for carbon and dirt build-up. High-speed exhaust air must pass freely. We finally broke the exhaust screen out with a screwdriver to get our machine going one day.
2) Gas is not flowing freely to carburetor > under gas tank, find the rubber hose connected to carburetor. Pull off rubber hose and make sure gas flows freely. You can use this hose to drain gas tank of old gas ... and then put in fresh gas.
3) Carburetor is partially gummed up and engine cuts off when gas flow slows down. Buy some gum out, and then don't store power washer with gasoline in the tank. Or put additive in gas when storing machine.
4) The choke is letting in too much gas or not enough gas. Try different adjustments. The choke-lever on our power washer got so bad that we could not set throttle at full open or the machine would die. We still use the machine at 2/3 throttle, and then start it each time using WD-40 as described below.
5) Dirty air filter that won't let engine breath enough air to keep up with combustion. Take off air filter and see if problem persists.
6) The spark coil is going bad?? Change spark plug to see if problem persists. Is spark plug wire pushed all the way onto the spark plug?

Now the nitty gritty: we're gonna start that thing right now
7) Take off air filter. Spray WD-40 directly into carburetor. Yes, we use WD-40 every time to start my power washer, and we use the washer twice a week.
Spray in the WD-40, Pull the engine cord. The engine will fire on WD-40. Guaranteed.
Once it starts, keep spraying WD-40 directly into carburetor to keep engine going.
If engine will not fire and keep going on WD-40, then your spark is suspect.
If your engine fires and runs on WD-40 but dies without it, then your gas supply or carburetor are suspect
8) Carburetor problem >>> try Gum out >>> and then take machine to small engine repair shop
9) Spark ... take out spark plug. Put spark wire back on. Hold spark plug by spark wire. Touch metal threads of spark plug to metal opening where plug came out. Metal to metal. Pull back start cord and look for spark between the metal.
If you have no spark, then spark coil is bad >>> take machine to small engine repair shop

Let us know how it comes out!!

check your air filter. If it's clogged, the engine will spool up to keep from dying, run for about 15 seconds, then it will happen again. If that's it, just clean the air filter. Solved my problem

Not familiar with this model, but this is exactly how the smaller ones behave when the carburetor diaphragm is shot. Larger engines usually have a float system with needle and seat in which case the problem is either a leaking needle/seat assembly or saturated float.

I would have to guess that the carburetor need to be rebuilt, if it has sat for a long time without running the gas has likely varnished and has plugged the jets to some extent. also a fresh spark plug is a good idea after you fix the carb.

Most likely problem is dirt?moisture in the carburetor float bowl. You would have to remove the bowl, clean it out and also clean the main jet up in the center of the carburetor. Another problem could be that the governor is out of adjustment but this is not something a novice could or should do

have you checked the air filter,if that is clean I think I would replace the carb, diaphram.