Speed control screw and the HAC

[wesintl]

So I'm adjusting the hell out of the speed control screw (clockwise) and it's not doing a dawg gone thing to my unburned black smoke issue at altitude. So I start playing with the lever that the edic shuts the motor down with and also hits the HAC. Hum looks like it might actually work if I adjust it. So I turn the HAC 1 revolution and take it for a spin. Black smoke cured (for the most part)

Now, do I go back and readjust (counter clockwise) the speed control screw to where it was? That screw is an absolute biotch to get to and adjust.

I don't have as much power as with pouring back smoke but it's not completly gutless. As non gutless as a 3b can be if you know what I mean.

 

[crushers]

i wouldn't take it all the way back to the original setting but would turn it back till the black smoke just starts to show and watch your pyro as you do this...

 

[wesintl]

i wouldn't take it all the way back to the original setting but would turn it back till the black smoke just starts to show and watch your pyro as you do this...

yeah but it didn't seem to do a thing to the smoke til I adjusted the hac. I'll take it back out some and see what it does. Thanks Wayne, I appreciate the help

 

[lowenbrau]

I hope I understand correctly.

The speed control screw on the pump has nothing to do with fuel except to cut it off when the no load speed reaches 4150RPM (or whatever you set it to). If you leave it alone you'll likley never notice but if something went wrong and you ended up in a WOT situation I'd feel better knowing the moter wasn't going to exceed this. The most common instance I have seen of hitting the rev limiter is when the engine starts up backwards. The exhaust in the intake pushes the fuel rail wide open and you rev backwards at about four grand until you figure it out and shut the rig down. This happens fairly often to rigs with stock gearing and bigger tires when they hit a ledge while climbing and stall the motor and then the backwards momentum restarts the engine backwards.

 

[wesintl]

I hope I understand correctly.

The speed control screw on the pump has nothing to do with fuel except to cut it off when the no load speed reaches 4150RPM (or whatever you set it to). If you leave it alone you'll likley never notice but if something went wrong and you ended up in a WOT situation I'd feel better knowing the moter wasn't going to exceed this. The most common instance I have seen of hitting the rev limiter is when the engine starts up backwards. The exhaust in the intake pushes the fuel rail wide open and you rev backwards at about four grand until you figure it out and shut the rig down. This happens fairly often to rigs with stock gearing and bigger tires when they hit a ledge while climbing and stall the motor and then the backwards momentum restarts the engine backwards.

Now that would make sense since the screw did absolutly nothing while adjusting it. Now to set it back uhhh.. that's not going to be fun. Thanks Bruce.

Ohh.. I did pass emissions with flying colors. Whew. I do need to fine tune it as it is a tad more anemic than usual.

Any of you guys going to make it to Moab this year?

 

[crushers]

my bad, i was confusing your post with diesel bigots...
sorry

 

[wesintl]

my bad, i was confusing your post with diesel bigots...
sorry

Yeah.. it was totally confusing me too reading that thread and trying to adjust things based on it. I was wondering why things weren't working at all.