Toyota Corolla GE-4A. Back fire in motto when accelerating but run alright at low speed.

1993 460 vacuum diagram - Ford Truck Enthusiasts Forums

www.ford-trucks.com/forums/1159717-1993-460-vacuum-diagram.html

May 4, 2012 - 1993 460 vacuum diagram Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460) ... The vacuum diagrams for most of the EFI engines are pretty simple since... 1995 Lincoln Continental (project car), 1994 Taurus LX (daily driver) ... All the Forddiagrams I have seen have the CCD in 1994 including mine (no ... De-smoging EFI 460
Apr 24, 2012
5.0 EFI Fuel Injection issues
Feb 8, 2012
More results from www.ford-trucks.com

Vacuum Diagrams - AutoZone

www.autozone.com/repairinfo/.../repairGuideContent.jsp?page...

AutoZoneFord Pick-ups and Broncos 1987-1996 Repair Guide ... 14: Vacuum diagram-19955.0L engine, Bronco models ... 15: Vacuum diagram-1995 diesel engine.Missing: injected

This could be one of two problems. It could be your switch is broken, preventing it from going to low speed. Try clicking it, does it still make a distinctive click sound, does it feel loose? If so it may be your switch: Rainbow e2 power switch
Otherwise if may be your computer in your E2 is starting to go bad. Often times if Rainbow stops going into one of the speeds it is due to a computer going bad. This is an expensive part and repair, so you should probably take it in and make sure it is the computer. Rainbow E2 controller 120v


800-775-6586
GoodVac com

Your model has a modulator that may be defective. Take it to a repair facility

disconect it and plug all vacumm lines if your idle stays steady, then you need a new idle up valve.

It is either the switch or the controller. Call us and we can see if it is still covered under your warranty.
RainVac
www.rainvac.com
800-523-0510

Your vacuum is fine. The switch can either run at full speed or half speed. You are running at full speed, you need a new 2 speed switch. You can pick them up at an Oreck Store for $29 or around $15 on eBay

It's probably doing that on low speed too, you just aren't noticing. What you'll have to do is get to the motor. Look at the armature and see if it's scared, missing an pieces, scratched up.. if so, then your motor is shot, throw it away.. If not, if the armature is clean, as in no physical damage, then all that is needed is to replace the carbon brushes and everything should be ok

Fritz , thanks please confirm... there are likely more than 2 leads from the motor??
I have not seen or worked on the Tristar CXL as it is very new.You will have a high low function but:

Should the power head function at both speeds or only hi speed

How many connectors pulled apart ?

Are the leads fastened onto the motor or are there push on male terminals on a terminal bar beside the motor with leads running off a shroud.
How many leads are on the switch itself....
Either way the wiring pattern will be the same,for all components it will just be a matter of which half of the motor harness connects in which terminal, if you wire it in reverse your speed switch should just function backward. The question is, is there a simple rocker switch for hi low or is there a circuit board type with a speed control on a mini board. If your power head functions at both speeds it will connect from the cord or rewind, prior to the speed switch. If it should only run on hi speed it will be tied into the hi speed half of the two speed switch.
So leaving your green ground out your pattern would be: black to 1 side of rewind to main switch to motor and head together and then remaining back to opposite side of rewind to cord.
Please confirm a bit more info as posted...

The 3 adjustment screws are Idle, high and low.
First figure out which screws are which adjustment. Tighten the screws then turn them 1 full turn.
Then start the saw and get it warmed up. Work on the high adjustment. This does take a little while. after you get the saw running at high speed work on the low speed.

fuel problem :
first try starting fluid spray can. if runs very short time, then carburetors are gummed up...need re-jetting or remove and buy a gallon of carb solvent and soak carbs for a day then shake out vigorously then air blow dry with compressor then retry

low spark...could be dirty plugs-clean them- or worse may be bad spark unit...try removing spark unit and pull away from chassis then re-attach wires and try....if ok spark, then unit is grounding out to chassis on rear mounting surface...look at back for small cracks in black plastic on unit.