Uploader/Pump Problem...?

JimFergerson

JimFergerson

New member
I just discovered today that my machine is loading up and shutting down.
I ran it yesterday for about 4hrs. with no symptoms at all.

All fluids are topped off and the engine itself is running great. Working it for a few minutes with the wand and it starts acting up. Stop running water through the wand for a bit and the motor runs fine. Get on the wand again and it lugs up and dies!

The pump is getting warm, but not hot and it's probably time to change the pump oil. However, I can't imagine that would be real problem here...

The machine is a PGHW4-3500 with a Honda 13HP GX390 and a Landa LT4035/L pump.

I will not work it until it get fixed and nothing is going on until after Christmas, but it's going to keep bugging me until this gets figured out!

Any suggestions?



And oh yeah, Merry Christmas!!!
:winknudge:
 
JimFergerson said:
I just discovered today that my machine is loading up and shutting down.
I ran it yesterday for about 4hrs. with no symptoms at all.

All fluids are topped off and the engine itself is running great. Working it for a few minutes with the wand and it starts acting up. Stop running water through the wand for a bit and the motor runs fine. Get on the wand again and it lugs up and dies!

The pump is getting warm, but not hot and it's probably time to change the pump oil. However, I can't imagine that would be real problem here...

The machine is a PGHW4-3500 with a Honda 13HP GX390 and a Landa LT4035/L pump.



I will not work it until it get fixed and nothing is going on until after Christmas, but it's going to keep bugging me until this gets figured out!

Any suggestions?



And oh yeah, Merry Christmas!!!
:winknudge:
Click to expand...

Do you smell any fuel? Could be too much/too little take your air filter off and see how it works when you pull the trigger.
 
JimFergerson said:
I just discovered today that my machine is loading up and shutting down.
I ran it yesterday for about 4hrs. with no symptoms at all.

All fluids are topped off and the engine itself is running great. Working it for a few minutes with the wand and it starts acting up. Stop running water through the wand for a bit and the motor runs fine. Get on the wand again and it lugs up and dies!

The pump is getting warm, but not hot and it's probably time to change the pump oil. However, I can't imagine that would be real problem here...

The machine is a PGHW4-3500 with a Honda 13HP GX390 and a Landa LT4035/L pump.



I will not work it until it get fixed and nothing is going on until after Christmas, but it's going to keep bugging me until this gets figured out!

Any suggestions?



And oh yeah, Merry Christmas!!!
:winknudge:
Click to expand...

Do you smell any fuel? Could be too much/too little take your air filter off and see how it works when you pull the trigger.
 
Jim, how many hours on that Honda? I'd check the air filter first. Maybe the spark plug...has it been changed lately? If it's got a lot of hours on it, it may be in need of a valve job. After it dies, is the engine real easy to pull over?
 
Could be a sticking unloader. Mighy be a piece of junk that is holding it partially closed.
 
I agree with Russ, if the motor is dying under start with the plugs and air filter. If that doesn't correct the problem it may need a valve job I have had that problem a lot with Honda's
 
I'm still hoping that it's something simple. Not smelling any fuel and the filter seems ok. Haven't checked the plug yet. 1,760hrs. on the clock, so it could be the valves?

It's weird that it just started doing this today, without any warning signs.

Here's a short video of what it's doing, (or not doing).

You can't really tell in the video, but it seems to run fine up until the last few seconds of the clip. Get off the trigger and it comes back up. Get back on the trigger and it dies. After it dies, I can purge the water out and it starts right up again. It runs fine for a minute and cycle continues. Just like replaying the video over again...

http://www.youtube.com/watch?v=rGCHmpMWaX0

What do you think?
(Besides it's Christmas, you should be hanging out with family and not be online)
:rolleyes:
 
I'm affraid if she runs strong while no load and then dies under load the Motors Shot....

Talk with Paul or Russ about a New motor. I know there prices are tough to beat.

Local try APD powersupply in Tempe. They have them in stock.

Hopefully your good, also i have a guy that rebuilds those for about 400 if you cannot get a new one.
 
That was me pulling the trigger after the motor died.

After reading a few other threads, i realized that i didn't drag her inside before it rained the other night...
 
See if you can check the compression. Try changing the plug that is a cheap fix, but I dont think that is it.
To me it dosent sound like fuel. I have the same engine and never heard my engine sound like that. I have run my machine in alot of rain and never had a problem.
Wish I could be more help.
 
If it runs fine till you let off the trigger it is your unloader that is the problem (not going into bypass). If it dies when you pull the trigger then the motor is the issue and it could be a valve job (can't handle a load). If it runs fine for a while and dies randomly it may be the fuel cap creating a vacuum in the tank.
 
I had this exact problem last summer. Turned out to be crap in the gas tank getting sucked up against the pickup. The fuel filter showed no sign of clogging, because the chunks of gunk in the tank were too large to enter the pickup. I replaced an unloader, put on new governor springs, vented my gas cap, and a couple other things until I finally figured out it was the gas tank. Should have checked that first!!
 
Hope everyone had a Merry Christmas!

I'm going to give it some much needed attention in the AM. Motor oil change, pump oil change, spark plug, and air filter. I will drain the gas tank and clean the carb as well. If I can find a gas cap over the week end, I'll replace that also.

I'm still baffled as to exactly what's going on and what caused this, though. The thing is, the machine works absolutely perfect and totally normal for the first minute of use. Great water flow and great pressure. It almost seems that it builds to much pressure after the first minute or so. Because, not until then does it act up. After it shuts down, I can pull the trigger and purge the water out and it starts right back up again. After it's running again, the machine works awesome for the first minute or so... until it begins to load up again. It will idle all day long with no water flow, and it will still come back up when it starts to lug up and i get back off the trigger.

Honestly, the only thing that I can think of is that I left the trailer out in the rain the other night. Water might of got in through the muffler and seeped in past the valves and into the crankcase. But the oil is still clean and has no water in it that I can tell. The day before it rained, I experienced no problems at all.

I just can't see any piece of machinery taking a crap like this, with absolutely no reasoning behind it, ya know?
 
If there is junk in the tank it'll take a minute to suck up to the screen. Just the slightest fuel loss under that load will kill a motor. After the motor stops the carb has a chance to fill back up. Then u crank it again and the trash sucks back up and repeats!
I would also unhook it from any accessories like a downstreamer or burner and then try again to eliminate everything.
And u can unhook the hose from the pump to the unloader and put a quick connect on it with a
nozzle and pressure gauge then see what happens. If the motor dies its probably fuel if it doesn't then u know its the unloader.
 
asewell77 said:
If there is junk in the tank it'll take a minute to suck up to the screen. Just the slightest fuel loss under that load will kill a motor. After the motor stops the carb has a chance to fill back up. Then u crank it again and the trash sucks back up and repeats!
I would also unhook it from any accessories like a downstreamer or burner and then try again to eliminate everything.
And u can unhook the hose from the pump to the unloader and put a quick connect on it with a
nozzle and pressure gauge then see what happens. If the motor dies its probably fuel if it doesn't then u know its the unloader.
Click to expand...

That makes alot of sense!


Another thing that i just noticed... The lock nut on my uploader is spinning around like crazy @ 0.30 seconds on the video.

http://www.youtube.com/watch?v=rGCHmpMWaX0

That doesn't look right!
:blink:
 
Try running it without the cap, and see what happens. That will rule that part out.
 
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