Hey guys I work for a fire dept and we have a 88 pierce fire truck with a 6v92 detroit in it. I was wondering how to turn the fuel up on the truck or find info on how to do it. Thanks

 

Brain box? DDEC? If it is, it will have a box on the top of the engine. That, we will need to know before you can start playing. And whats going to happen when it gets taken in, and they find out. That "SOMEONE" has been doing non cert'd mods to the engine? I'd leave it. No fire is that important to get to...my .02

 

6V92's are 2 strokes, and purely mechanical.

Don't turn the fuel up, makes no sense in that application. You need a stone reliable motor, even if it takes a minute or two longer. I'd rather have a fire truck arrive a couple minutes later, than a fire truck burn up the motor and never make it.

 

there's lots and lots of 2 stroke DDEC engines running around. the electronic unit injector was brought into the 2 strokes in the 80s - early 80s sometime. DDEC 1 I can find out the exact year tommorrow. too tired to look it up now.

 

I have to agree with kas83 on this one . .. A fire truck is not the place to be doing things that may possibly reduce reliability. If that engine goes BANG it could mean someone's life . . .not worth the chance.

 

After hearing about the stress test they put on the engine/pumps before they are shipped, any performance increases may cause problems. They have to run at full pump load for hours, who's gonna watch the gauges?

 

yup about '85 DDEC 1 on 92s came out. '87 series 60 introduced with DDEC 1 quickly upgraded to DDEC 2 in '88 or '89 and the '92s went out of production for road use in the mid '90s. so theres plenty of electronic 2 strokes on the road.

agreed on the nono of actually turning up a fire truck that's in service.

 

Yes they are 2 strokes. And yes there are DDEC 1 2and 3 ecm controled 2 strokes. Worked on them abit........

 

Thank You Sir......

 

6v92. DDEC. from this afternoon.

 

Oh you poor man.....Its a BUS!!!! I hate working on them with a fore and aft 8v that you have to take the rear seat out of, just to remove the air piping...Lotta fun to do an inframe with a Series 60.

 

..............tell me about it no really work is work. I dont mind busses. we get tons of transit and MCI, prevost, greyhounds, setra............oh my. we got the contract to repower 50 transit with series 50s too. we usually pull the skid. if its in for major work anyways. as the allison usually gets a work over too.


funny though. I took this other transit on a road test 1/2 hour before I had to leave work today............yup dead in the water 3/4 way through. good times.

 

Last one I did was a 60 EGR that needed a turbo changed out...NO!!! I'm 6foot and 240.. WE DON'T FIT!!!!!!!!!! Grab the lil guy and shove his edit in there!!! Just found a new use for shop dwarfs!! OH YEA!!!

 

The mechanicals had an orifice in the return line(not sure if the DDEC units do) dill it out a bit larger.

 

that was a trick up to DDEC III/IV S60. often doing that was a cause of other drivablity issues or injector problems though.