1986 TMC 102A3 - Slow Take off

[Dave5Cs]

They must know I know you because they just wave me through, LOL

[luvrbus]

They must know I know you because they just wave me through, LOL

I don't have CA plates lol,last year when I was bring my tractor back from Texas I had a little dirt on the tires and trailer,the inspector told me their washer was broken and needed to go back to Parker and wash it.I looked at him for a few seconds and said man I been in CA for over 20 miles if I go back to Parker that will be over 40 miles plus the return trip and AZ is only 50 miles give me a break.Nope go wash it so I went back to Parker and across to AZ.I think CA sends the screw ups to that location for punishment and they have a attitude about it, most of the time it's not bad though if I don't cop a attitude and you knowing me that can happen 
   

[Dave5Cs]

And that sign on your truck that says "I am here to mess with you, I am really from Tex-ASSSSSS"., LOL

[Geoff]

I've been trying to remember the name of the upgrade from a "throttle delay", the piston type, and a "fuel modulator" used in the MUI 92 series   The throttle delay works from an idle until the oil in the cylinder is pushed out by the little piston as the rack moves to deliver more fuel.  Very slow take off.

The fuel modulator allows the rack to move to 3/4 of travel until the turbo boost releases a catch that let's the rack go to full fuel with no smoke.

I have the fuel modulator on my engine and it works great.  No slow take-offs

[jraynor]

I've been trying to remember the name of the upgrade from a "throttle delay", the piston type, and a "fuel modulator" used in the MUI 92 series   The throttle delay works from an idle until the oil in the cylinder is pushed out by the little piston as the rack moves to deliver more fuel.  Very slow take off.

The fuel modulator allows the rack to move to 3/4 of travel until the turbo boost releases a catch that let's the rack go to full fuel with no smoke.

I have the fuel modulator on my engine and it works great.  No slow take-offs

Is it possible to convert to this? I drove the bus today and I could probably live with it. It just feels like it's struggling to go like something is holding it back

[Geoff]

You can add the fuel modulator and get rid of the throttle delay, you just need to find one.  I got mine off a junk engine.

[chessie4905]

Drill out the hole to  SLIGHTLY larger size. Will need Cobalt or harder bit. Use number size bit since they size by smaller increments.

[luvrbus]

First you need to find out which you have you probably have the modulator with a turbo 6v92 engine look for a hose going from the air horn on top of the blower to the rear on the right side head 

[buswarrior]

In looking back on this thread...

A newbie to buses thinks his bus pulls away slowly...

Before anything other than preventive maintenance is caught up, (air filter and go for a drive) maybe another busnut that is familiar with the crappy capabilities of a 1986 102A3 with 6V92 should take it for a spin???

The ones I drove brand new were not my favorite for pulling away...

Who lives in what part of Florida to take this for a spin?

happy coaching!
buswarrior

[luvrbus]

All the EPA highway 2 strokes beginning in 1984 had one of the other type fuel control,both are a real pain the modulator type you get a exhaust leak they don't work either,lol I have pile of both types I have removed over the years and the owners have learn how to use the right foot for smoke control and love not having either type   

[Geoff]

I like my fuel modulator.  With the air throttle and auto transmission I just push on the accellerator pedal and go.    No worries about smoke and having to regulate my foot pressure.

[luvrbus]

The military 8v92 came with the modulator and most were never hooked up,I have 2 that are under the valve covers that have never been in service our tax dollars at work 

[Geoff]

The military 8v92 came with the modulator and most were never hooked up,I have 2 that are under the valve covers that have never been in service our tax dollars at work

I have worked on three military 8V92TA's and none of them had either a throttle delay or fuel modulator.  And two of them were governed at 3,000 rpm's.  They are exempt from the EPA regulations.  I wonder if all those military engines are gone now, they were selling cheap.

[luvrbus]

All four 8v92 military engines I owned had the modulators the 2 I have left does also they have never been run ,both are rear mounted turbos 2100 rpm engines 475 hp 9G90 injectors ,they have 24v alternators driven from the blower gear and huge @$# air compressors,Jakes with Williams air throttles and electric shut downs