BCM Community

We are in so cal victorville area and can only get 1800 rpm after the 8v71 has been running for a few mins . Anyone near here that knows how to adjust this ? and the fast idle does not work.

Thanks Rob

Check the shut down cylinder on top sounds like it is not retracting all the way 

OK will check that out :)

Thanks  Rob

If it has set for a long time you may have a injector stuck but the governor and rack setting don't change from setting

OK it has sat 4 years been starting it every month the 1800 rpm started on the way here by barstow Ca coming to work off the 7 grand I had borrow to pay the rip off Shop in Gallop NM with the drop box. also found they did not tighten the drive shaft bolts on the drop box side found that out getting the drive side drum free of the break pads the other day :(

Took off the stop unit and linkage same 1800 rpm :(

Will it hurt to drive it with only the 1800 rpm and not have the 2000 rpm it used to have will I lug things that way ? I will be towing a trailer to TX moving there:)

Rob Thanks

Man you won't have any power....I mean like you'll be going 25 mph up any tiny grade. Been there done that.


Sent from my iPhone using Tapatalk

Bummer that would be and not 30 MPH

Disconnect the throttle linkage on top and move it by hand Rob and see if it changes,yea I remember the drop box deal ? where you at now ? when is the last time you changed fuel filters

I did remove it no change. We are near Victorville CA now and Camp Verde AZ right after But could not make money to pay back the loan there so came here to work it off here where she has her business.

Thanks Rob
Without you I would have lost my Buss for sure Thanks a Lot Again!

did change the look of the buss some here.
(http://C:%5CUsers%5CSusan%5CPictures%5CPhotos%207315%5C20150510_160025.jpg)

Insert image did not work :(

Changed them out right before We went to the trip from hell to tx that we lost the drop box in gallop only drove to there and to camp verde then back here maybe 2000 miles and starting her every month! should I remove them and dump them out and see or just get new ones Have screw on primary and secondary ones !

Change the 2 Rob that could be the problem

OK Will go get them from Napa Today !

Could not post pic here so I put one on profile :)
Thanks Rob

new filters and still the same! what to try next?

Thanks
Rob

How are you reading the rpms with a dash unit or hand held tach with tape ?

Have only Had the dash gauge.  have no other unit and where would I get a cheep one at ?

You can get one for 15 bucks @ Amazon that will work you don't need anything fancy.I don't know what route you are taking, I am thinking it's 150 miles on 40 from you to me if you don't get it figured out stop by on the way and I'll help you out

I bought mine at harbor freight. Cheap and works well. Stick the tape on the crank pulley... And shoot the gun at it


Sent from my iPhone using Tapatalk

you are still just off the 40 ? :)

Susan would love that :) and get to see her best friend Sandy and Ron the guy that came with me before they live in flagstaff AZ:)

Ok there is a harbor fright near here about 20 miles

H/F tachs work last one I saw there was 40 bucks he said cheap lol I am not telling what I paid for mine made in the USA  

Lol, ok, well then, yeah go with the $20 one on amazon. It'll ship right to your door too


Sent from my iPhone using Tapatalk

A guy here has a 12v tach hooks to the coil on a car will that type work ?
Thanks rob

Nope needs to be laser non contact or a wheel type

Ok will get one :)


Thanks Rob

OK took it for a test drive and had no power to climb even a slight incline. stopped and meet a guy that does custom land racers land speed he had a contact tach. we took and ran the rack the whole tune up by the book. my tach shows 4.75 for idle and the other shows 550.  for no load mine shows 17 and the contact tach shows 21.50. but what really got fixed is everything in the governor and the rail was all bound up so now the stop lever and the throttle lever works easy and smooth.

Will set the Jakes and see if we can get them working. He also made me a wedge tool :) Then take her for a test drive.

I mover the bus to his place and he is a great guy he went and pulled the trailer over here :) He has a complete machine shop at his house. Will ask him if he would be will to help out bus nuts in need when they are in need around here :)     

Yep it usually just takes a little paint thinner for cleaning and fresh oil and they are back to life,if it is running good I wouldn't bother with the wedge and the air gap setting JMW

OK is there a easy way to get a tach working in the front for driving.

on the test drive power was better but the rpms went down slow which made it hard to down shift Jake breaks where slow to come on.

Thanks Rob

   How about a weak fuel pump. Do you get any smoke when it is under load on a grade? Are you getting full throttle at engine with pedal floored? Manual or air throttle?

its a manual throttle.  she smokes white with a little dark at take off and for a while driving have not gone to a good grade yet small ones are slow to pick up speed.

How do I test the Fuel pump?    and if it might be fuel I should also check air in take also right?

Thanks Rob 

Screw a gauge in the secondary filter top if it reads 50 + lbs at full throttle you are good

Someone chime in here, you said the engine is slow to idle down, than indicates something is still wrong...


Sent from my iPhone using Tapatalk

It's been sitting for 5 years all the linkage is stiff along with rack he just needs to change the oil, lube all linkage, add new fuel to the existing fuel and run the piss out of it for a few hundred miles it will get better with every mile

oil is this good 40w for the 8v71? VALVOLINE VV400 Motor Oil, HD Diesel, 5 Gal, 40W

Thanks

Quote from: RobSedona on August 12, 2015, 08:24:13 AM
oil is this good 40w for the 8v71? VALVOLINE VV400 Motor Oil, HD Diesel, 5 Gal, 40W

Thanks

it will work. I would use it, if the price was right I am not partial to any oil, as long as it is CF2 rated in a DD.

i prefer Delo or Rotella.

found a place for Delco 100 at $69. for 5 gal.  will but that in and run up to barstow ca. and see how she runs the hill up and back!

Thanks Rob

Quote from: RobSedona on August 12, 2015, 12:19:42 PM
found a place for Delco 100 at $69. for 5 gal.  will but that in and run up to barstow ca. and see how she runs the hill up and back!

Thanks Rob

The cream off the top of the crude oil is Delvac 1240.... says some :) ;D ;)

I'm using the delvac 1240 in my buses. Get it at Williams


Sent from my iPhone using Tapatalk

Do not have the time to do A oil change here they are leaving for 3 weeks so Have to pack up and go! Oil has not made many miles more old from setting is it ok to get out on the way and change in 150 to 300 Miles and lube her then??

Thanks Rob