starting up an 8v92

[Dakell12]

Dumb question for the board...is it a problem to start up the 8v92 with the high idle on? ( I figured that since the engine should be run at high idle all the time, this wouldn't be a problem.) the bus seems to start at a normal idle even when the swtich is on high, and then boost itself once it has warmed up.

[Ace]

It all has to do with AIR Pressure! You can start it with the high idle switch on but it won't activate until your AIR is up!

Ace

[scanzel]

I have an 8V92 in mine and if I stand corrected the high idle will not come on until you have a least 100 pounds of air. If I turn mine on at start up it will do nothing until I reach 100 lbs, then it comes on.  

[Hartley]

Dumb question for the board...is it a problem to start up the 8v92 with the high idle on? ( I figured that since the engine should be run at high idle all the time, this wouldn't be a problem.) the bus seems to start at a normal idle even when the swtich is on high, and then boost itself once it has warmed up.

Who instructed you to run at high idle "all the time"?

The high idle was installed for a special purpose, Not just because it's there. It shouldn't be used
except to operate the over the road air conditioning when waiting for passengers which is why it is there.

If you don't want to waste fuel and soak the engine in unburned fuel don't use the high idle.

Everyone has thier own idea on this. Why waste your engine for no reason.

[Hi yo silver]

I'm not being argumentative here, just want to learn something.  I've always heard that the Detroits (8-71s at least) don't like slow idle for long periods.  Now that the subject comes up, I'm not sure what the reasoning was.  Comments?
Dennis

[Dallas]

I'm not being argumentative here, just want to learn something.  I've always heard that the Detroits (8-71s at least) don't like slow idle for long periods.  Now that the subject comes up, I'm not sure what the reasoning was.  Comments?
Dennis

Dennis,

Detroits don't like slow idle because they only keep minimal oil pressure and also when idling the cumbustion chambers and cylinders never get warm enough to completely burn the fuel. This lets unburned fuel wash down the cylinder walls which can lead to early engine retirement.
Just for fun, idle your engine for a few hours, then get in ad drive it for a mile or two.
I'll bet there won't be a skeeter within 3 miles of you when you start out hammering on the throttle!

Dallas

[Ace]

Dallas, not to mention it running away! 

Ace

[Hartley]

Awe Never mind...

Just don't idle your engine for hours. Not even on high idle.

Nobody ever said being rational was easy.....

[buswarrior]

Hello.

Dr Dave, you are a good fellow.

happy coaching!
buswarrior