Honda gx160 stalls

[Tinker]

Hi guys first a big thanks for keeping this going this is the "BEST" info site I have ever been on!
I have a stone brand plate tamper with a honda gx160 QX2 GC026225002
I received not running with carb and fuel tank removed. I installed tank and reassembled carb after a carb tank soak there was evidence of ethanol damage as the bowl was rusted on the bottom. The engine started up second pull and idled nice I let it warm up several minutes throttled up ran smooth and tamper worked good after approx 40 seconds engine acted like it ran out of fuel and stalled it will start back up and idle all day long but as soon as you throttle up it dies after 30-40 seconds. I also noticed fuel tank had a leak in seam and also carb bowl had a pin hole leak. So I decided to order new tank and carb. Both were aftermarket the carb was Oregon I confirmed correct replacement carb from original carb number. And tank also came with new screened outlet fitting. Installed both and new fuel line and have exact same problem I did do a inline spark test and have good spark all the way until engine dies down and quits. I tried leaving fuel cap loose to make sure it wasn't a venting issue. Removed tank again checked hose and tank nipple all looks good. Again it starts right up and had it idle for 15 plus minutes smooth doesn't skip a beat it accellerates great runs smooth for about 30-40 seconds then dies out it will start up again idle fine run same 30-40 seconds then stall again. I have not pulled the new carb apart to check float level it has me frustrated thanks for any suggestions

[StarTech]

Engine GX160H1 QX2 GC026225002

Have you tried disconnecting the low oil sensor to see if it is giving the problem? They seem to give irradiate problems sometimes causing engine shut downs especially with the vibrations that tamper going to have.

[bgsengine]

1) do it have an oil pressure switch? (unlikely) and 2) agree with Starfire - sounds like maybe the oil sensor may be giving problems.

Reason I ask about the pressure switch: get a lot of generators that do the same exact thing, almost invariably the oil pressure switch has failed.. after verifying oil pressure with a gauge, replace switch with a Briggs or Kohler number and all is fine.

Rarely see a Honda with the problem, but many Honda Clones do that.(oil switch failure) 30-40 seconds isn't enough time for vapor lock to form anyhow.

[Tinker]

Thanks I will go unplug and see if that works

[Tinker]

No luck I unplugged black wire first it was the same then disconnected yellow wire also same I did time it both times stalled at 20-25 seconds

[RoyM]

Will it run with the fuel cap loosened?

[bgsengine]

Will it run with the fuel cap loosened?

Hmm

I tried leaving fuel cap loose to make sure it wasn't a venting issue.

[bgsengine]

dig a little deeper, if you are losing spark when it quits (and losing spark is WHY it quits) then perhaps disconnect the coil completely from all switch wiring (pull blower housing and pull lead wire off) - though if it runs then you'll have to get creative to shut it down - Shutoff fuel and let it run out of gas, choke it to death, or using pliers, pull plug wire off.. Otherwise if it still quits and no spark, then you likely have a coil problem.

But you need to make sure it is quitting BECAUSE it loses spark , and not losing spark because it quit.

Could be a fuel supply issue if you have a clogged filter, insufficient fuel flow to the carburetor or a corroded fuel shutoff on the carb - anything that restricts fuel flow..

[JandL]

Just to isolate, try rigging up an alternate fuel supply and go straight to the carb inlet nipple. If it runs good then you will know you have a fuel supply problem. If it still shuts down you don't have a fuel supply problem. This will not eliminate a carb problem but it will tell you if the tank, lines and filter are good or not.

[Tinker]

Spark is fine it starts to die out like its running out of fuel as its dying it still has good spark. I have double checked fuel supply line and tank as both are also new with hose off at carb fuel runs right out The carb is also new aftermarket Oregon but had same exact symptom before new tank fuel line and carb there is no other fuel filter in line. Only thing I can think of is float level not correct but had same issue with original carb not saying it could be problem with new carb but same problem those are tall odds thanks for replies still open to any other suggestions