656 loses power

I have a IH 656 gas that will starve itself of fuel when I engage the hydraulics. If I leave the choke out a little it seems to be better. If I'm hauling round bales or hauling manure it is fine except when I engage the hydraulics to open end gate etc.... Is there an adjustment on the carb do I need different plugs etc...

Help

Not familiar with IH, but to me it sounds like an issue with the hydraulics not the carb.

Ok , here we go . First make sure that fuel wis flowing strong to the carb. If not then ya have something blocking the flow from the tank. Check and make sure that there is a fine mesh screen in the sediment bowl , if not then ya need to clean the screen that is in the fitting at the carb . Then ya put the proper screen in the sediment bowl. There should be NO main fuel adjustment on that carb NONE . there is a shut down solenoid and when you turn the key on it opens up the main jet for MAX fuel. Next what plugs do you have in it , my self i like Autolite 386 or 3116 . Next check the ing. timing with the engine warmed up and the ft pulley marked at the proper setting and here i am not sure to the TOTAL advance on that tractor off the top of my head with out going out to the truck to check so you will have to look that up , You set the timing at wide open throttle . Next Change your GAS , yes your gas on the later I H gas engines they requier 93 octane gas here again look it up in a org owners manual as to fuel requierments. When was the last time the valves were adjusted ?? yep they need adjusted this is not a car or pick up . Now since this seams to only happen when you use your hyd.s then i would run a pressure test to see if maybe your pressure relief valve is not sticking. as i have seen hyd.plum put the fire out and kill a tractor dead in her tracks when the pressure relief stuck. Might be the hyd. doing this but i am leanning more to a fuel related problem and a timing issue , but plugging in a hyd test gauge good to 5000 Psi into the remotes will tellya real quick as your system should not go much over 2100 PSI but more like 1750 , but here again the books are in the truck and i am in my slipper it is COLD out there andi ain't going out to the truck till after lunch when i have to go on a service call today.

Check fuel flow to carb. Should be full line of fuel comeing through. Screen at carb.line plugged. Gas tank plugging at sed.bowl. Should have 2 good streams of fuel there with bowl off and turned claer on. Could be bad carb.solonoid switch if equiped.{wire may have come off and not let it opening clear up}.

Hope this helps.

If it is fine other then when you use the hyds when was the last time you changed the hyd filter on it

The 656 has a snappy governor. When the hydraulic lever is moved the governor snaps open real quick and the engine stumbles or dies if the mixture is lean. A 656 runs on the lean side anyway so when the carb is leaner than normal the stumbling problem gets worse quickly.

I would agree - if the only time this pops up then the issue probably isn't fuel related - it is your hydraulics.

Sounds like the hear riser valve is not working in the exhaust manifold.

Guys, guys he said it clears up when he pulls the choke a little. Definitely fuel-carb related not hydraulic.

I would raise the fuel level in the carb, maybe raise the float at a little.