Waggy Stutters Under Full Load

[Wackyneer]

I'm now doing "test runs" with the Wackyneer. It has been running well, so I tried to see what she's got. Once under full throttle for >5 seconds at 35+mph it stutters, and then regains power. If I keep my foot on the throttle, the scenario repeats itself. This only happens under load (not in park) and only after the accellerator is punched for a while.
Logic tells me it is a fuel delivery issue. I don't think it is the fuel pressure/pump, because it picks up fine for 5 seconds or so. I suspect the following:
Clogged fuel filter
Clogged fuel lines
Improper fuel bowl level

It is important to mention the Wackyneer sat for 3+ years and I have driven <30 miles on it since purchasing it. So far, I have replaced the following (possibly relevant) things:
Drained gas tank and refilled w/93 octane + Seafoam
Fuel filter (vent in 12:00 position)
Air filter
plugs, wires, cap, rotor, coil (no timing adjustment)
almost all vacuum lines
PCV valve
Both missing air intake hoses (on snorkel)

[80wag]

Make sure your fuel lines aren't kinked at all, I recently replaced one that was too short, check your fuel filter, replace it if its old, and also fuel sock.
Good luck

[Rich88]

I'd agree its a fuel delivery issue. You can't keep up with the demand.

Most likely clogged fuel sock or filter.

Also, what's with the 93 octane? These things prefer 87 or lower if you can get it. Higher octane is to slow the burn down, and is required for higher compression engines. For 360s, its a waste of money and results in lesser performance.

[Wackyneer]

I didn't think to check for kinks in the new "shorty" hoses coming in and out of the new fuel filter. I'll check those and change the filter again too. I wouldn't be surprised if I need yet another fuel filter. I'm hoping to avoid locating a sock and dropping the gas tank.
Everything about this problem indicates that I'm not getting enough volume of gas to the carb during heavy demand. Does everyone agree that this is a fuel delivery volume/quantity issue?

[3rdelement]

you shouldnt have to drop the tank. there is an access panel under the rear seat(drivers side) you can drill out the rivets and access the fuel sending unit there.

i would guess:
fuel line calapsing during load
fuel filter clogged
fuel filter vent not at the 12 oclock position
float level incorrect in carb.

[Schlagger]

Wouldn't be a horrible idea to throw a new fuel pump on too. They are under $40 and if it sat that long there could be gunk in it. I'd probably do the sock, filter and lines first though.

[Rich88]

....there is an access panel under the rear seat(drivers side) you can drill out the rivets and access the fuel sending unit there.

That's right. On mine, I replaced the rivets with sheet metal screws, 'cause there's always a "next time", whether for you or the next guy.

[Wackyneer]

I cannot find anyone selling a fuel sock. Is the fuel sock also called a "Fuel Sending Unit Filter" (TGW) or a "Fuel Pickup Tube Filter" (BJ's)? If so, is one better than the other?

[Rich88]

I cannot find anyone selling a fuel sock. Is the fuel sock also called a "Fuel Sending Unit Filter" (TGW) or a "Fuel Pickup Tube Filter" (BJ's)? If so, is one better than the other?

This: http://www.bjsoffroad.com/prod-310.htm

[Wackyneer]

This: http://www.bjsoffroad.com/prod-310.htm

Thanks for confirming my thoughts. I couln't find the word "sock" anywhere, and I'm pretty good at Google-Fu.

[Rich88]

Thanks for confirming my thoughts. I couln't find the word "sock" anywhere, and I'm pretty good at Google-Fu.

Maybe shoulda tried "fuel line hosiery".

[Cappicaper]

I had the same problem. Turned out to be the nut that hooks the fuel supply hard line to the back of the carb had loosened up consequently not delivering enough fuel under full load.

[Wackyneer]

I had the same problem. Turned out to be the nut that hooks the fuel supply hard line to the back of the carb had loosened up consequently not delivering enough fuel under full load.

Now that you mentioned it... that line (stainless between fuel filter and carb body) moved ~1-2" when I changed the fuel filter and shorty fuel hoses. I didn't think to tighten it once I was finished.