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Honda GX340 engine will start, but will not continue to run. Checked fuel and spark plug.

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Posted on Jan 02, 2017

  • 1383 Answers

SOURCE: pressure washer stalls

Pressure washers work under very dirty conditions, no wonder they encounter engine problems. Here are a few pointers from a former pressure pump tech. The unloader is a source of engine overloading however this can easily be checked with a pressure guage attached to the gun with a tee fitting having the guage and the normal tip used for the unit. The pressure should never rise over rated pressure. The pressure should drop considrably when trigger is released. The life of the pump and engine can be increased by setting max pressure to 75% of rating. Most engine problems are from following conditions:
Leaking or misadjusted valves; clogged muffer /spark arrester; weak spark coil that is about to fail completely; kill switch/oil sensor wiring and or sensor mal function; gas cap not venting properly causing vacuum in tank and wet or dirty air filter.
All these problems easy to check, fastest repair is to disconnect oil sensor wire to check oil safety system. Then temp replace coil with known good coil. Loosen muffer bolts to check for clogged muffler. Temp run engine without gas cap to check for vacuum. Finally if everything fails, run the engine with carb cleaner spraying directly into the intake. If the engine continues to run with carb cleaner then the problem is fuel delivey and faulty carb. enjoy

Posted on Dec 01, 2008

  • 174 Answers

SOURCE: Honda GX340 11 Hp ..Runs fine until it gets hot , Cuts off and

FIRST...check the engine oil level. Some Honda engines have an oil sensor that shuts off the spark if the oil is low. This would also explain it shutting down when it get hot. Check the manual to see how to tell if the oil level is correct. Also, the oil should be brown and transparent, not black. It may need changing. Post again if this doesn't help :-)

Posted on Jun 16, 2009

  • 174 Answers

SOURCE: Honda GX340 11 Hp ..Runs fine until it gets hot , Cuts off and

Have you checked the oil level?

Posted on Jun 28, 2009

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1 Answer

What RPMis the max torque


the chart shows figures of 10.7 hp-8.0kw with a torque of 19.5 ft/lbs- 26.4nm at 2500rpms ( max net torque)
the chart shows gx390 is 11.7hp (8.7kw) but the torque is the same as the gx340
you can get these figures from world. honda com or by going google and typing in--torque range of honda gx 340 motor at max rpms
10 hp engines running at 2500 rpms will be good for gensets of 5kw continuous out put as most makes run that size engine

Apr 20, 2016 | Honda Gx340 Gas Engine 11hp Motor Pressure...

1 Answer

Have honda gx340 11hp pressure washer and gas keeps going into oil?


Excessive fuel entering the inlet manifold, carby needle and seat not shutting of fuel flow , remove and clean fit new gaskets and needle and seat if worn.

Jul 02, 2015 | Honda Gx340 Gas Engine 11hp Motor Pressure...

1 Answer

It will crank and run good for 10 minutes and shut off. Once it shuts off when you restart it, it will only run for a couple of minutes and shut off again ?


I would start by getting a can of carburetor cleaner and have it 'at the ready' and try the 'start, run stall, start run stall' operation again. Only THIS time, once the engine begins to stall, give it a couple of quick shots of the cleaner into the air filter to see if it stays running on the cleaner.

If it does, then it's still a fuel problem. If it doesn't, then it probably an ignition problem. I would be sort of leaning towards the ignition coil getting weak. The reason I'm saying that is your statement about it running (I'm assuming cold start) for at first, 10 minutes then it stalls. Start it again and it runs for a couple of minutes and stalls again.

This could possibly be from the coil getting warm/hot and not producing the needed spark. After a 10 minute run it simply gets too hot and stalls the engine. After the next restart, the coil is already warm from the engine and so it don't take as long for the coil to get hot and stall the engine again.

Hope this makes sense and helps you out.

Apr 25, 2015 | Honda Gx340 Gas Engine 11hp Motor Pressure...

1 Answer

I have a Honda EP5000 Generator set with GX340 engine, the problem is that too much oil is discharging from OHV cover into the Air Cleaner via that rubber pipe and spilling out from it. Engine also smokes...


Hi,the quick,but not final fix for this issue is to use a oil additive similar the one-s from the cars,but make sure you are using the one required by the fuel type.The engine is worn out,needs overhaul,soon or later.Good luck,regards

Nov 01, 2014 | Honda 6kw 120/240v, Gx340, Recoil Start...

1 Answer

Why does Honda GX340 die immediately despite fresh gas, cleaned carb, and new plug?


Perhaps you haven't adjusted the carburetor correctly.The fuel supply orifice could be still plugged . Recheck the carb.

Aug 27, 2014 | Honda Gx340 Gas Engine 11hp Motor Pressure...

1 Answer

I have a Baldor 6000W generator with a gx340 11hp engine. I have drained the tank and carb and put new gas and sea foam in it. Also I have replaced the spark plug and fuel filter. The engine will...


It sounds like the engine is not getting enough fuel for it to run. First check that you have the fuel tap in the on position. If the fuel tap is on then the carby might be blocked or the needle & seat are not working properly. Turn the fuel tap off. Then take the fuel bowl off. You will then see a plastic float,turn fuel tap on. Fuel then should be flowing from carby. Push the float up and this should stop the fuel from running. Do this a couple of times to ensure that it is working correctly. If all is good after that then turn fuel tap off. Put fuel bowl back on, turn fuel tap on and test. If no luck, turn fuel tap off. Then you will need to take the carby off the motor and clean it using carby cleaner. Be sure to spray cleaner in all holes of carby and blow out carefully with air compressor. Put carby back onto motor and turn fuel tap on and test.

Jan 06, 2011 | Honda 8 HP Engine

1 Answer

I have a Honda HT4213 lawn tractor, it does not have any spark. I checked the seat safety switch. It's good. pto switch, good. Neutral switch seems good. Engine does turn over but as I said no spark.


Flywheel and ignition coil are located on the rear of this engine. Remove covers as needed to reach the ignition coil. There are two (2) High-Tension leads (to the spark plugs) and one (1) small-guage wire.
The smaller guage wire is the engine's "Kill Circuit" trigger-wire. Everything electrical that makes the engine stop running comes back to this wire. Unplug it and check for spark with a spark tester.
SEE NOTE BELOW
If no spark, replace the coil. Part number 30500-ZA0-701.
If good spark, continue your wiring checks, possibly the control relay part number 38350-762-003 located roughly in the left rear of the engine bay.

NOTE: DO NOT START the engine with this kill-wire unplugged! There will be no way to turn it off until it runs out of fuel! Remove the spark plugs and use a spark tester and above all, BE SAFE!

Hope this helps,
Dolf-

Oct 13, 2009 | Husqvarna 160 CC Honda OHC Engine 21 in

1 Answer

Honda GX340 11 Hp ..Runs fine until it gets hot , Cuts off and


FIRST...check the engine oil level. Some Honda engines have an oil sensor that shuts off the spark if the oil is low. This would also explain it shutting down when it get hot. Check the manual to see how to tell if the oil level is correct. Also, the oil should be brown and transparent, not black. It may need changing. Post again if this doesn't help :-)

Jun 01, 2009 | Honda Pressure Washer PSI 3000

1 Answer

Pressure washer stalls


Pressure washers work under very dirty conditions, no wonder they encounter engine problems. Here are a few pointers from a former pressure pump tech. The unloader is a source of engine overloading however this can easily be checked with a pressure guage attached to the gun with a tee fitting having the guage and the normal tip used for the unit. The pressure should never rise over rated pressure. The pressure should drop considrably when trigger is released. The life of the pump and engine can be increased by setting max pressure to 75% of rating. Most engine problems are from following conditions:
Leaking or misadjusted valves; clogged muffer /spark arrester; weak spark coil that is about to fail completely; kill switch/oil sensor wiring and or sensor mal function; gas cap not venting properly causing vacuum in tank and wet or dirty air filter.
All these problems easy to check, fastest repair is to disconnect oil sensor wire to check oil safety system. Then temp replace coil with known good coil. Loosen muffer bolts to check for clogged muffler. Temp run engine without gas cap to check for vacuum. Finally if everything fails, run the engine with carb cleaner spraying directly into the intake. If the engine continues to run with carb cleaner then the problem is fuel delivey and faulty carb. enjoy

Nov 15, 2008 | Honda Pressure Washer PSI 3000

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