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Message |
Iver (Mciv)
Registered Member
Username: Mciv
Post Number: 13
Registered: 11-2006
Posted From: 70.69.132.80
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 25, 2007 - 3:14 am: | |
I have installed a newly rebuilt 8v92 in my coach. The engine was never run before I installed it. After hooking everything up and priming the engine it started right up.
The problem is it won't keep running. The book says to adjust the idle screw which I tried. No luck. No matter how far the adjustment goes in it won't keep an idle.
Also, I know there is an adjustment on the back side of the governor as well.
I really have to admit my ignorance on this and hopefully someone can explain how it works.
I have made plans to have a detroit mechanic come out to help but I would really like to understand it myself.
Thanks, Iver |
Grant Thiessen (Busshawg)
Registered Member
Username: Busshawg
Post Number: 13
Registered: 10-2007
Posted From: 142.161.44.205
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 25, 2007 - 10:23 am: | |
Are you sure the fuel lines are bled properly? |
George M. Todd (George_mc6)
Registered Member
Username: George_mc6
Post Number: 279
Registered: 8-2006
Posted From: 76.168.69.233
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 25, 2007 - 10:26 am: | |
A little more info please.
DDEC or mechanical engine? (I know, he says screw)
Will it start and run if you hold the throttle open?
If it is a mechanical engine, is the shutdown plunger just clear of the stop lever with the master switch on?
A mech inj eng should start and idle with nothing connected to the governor or the stop or fast idle connections. So either you have a suction leak in the fuel line from the tank, a bad, or improperly adjusted governor, or the shutdown cylinder is installed too close to the stop lever?
HTH, George |
Iver (Mciv)
Registered Member
Username: Mciv
Post Number: 14
Registered: 11-2006
Posted From: 70.69.132.80
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 25, 2007 - 12:03 pm: | |
Yes, it is a mechanical engine. As long as I hold my hand on the throttle cable on top of the governor, it will keep running. As soon as I release the throttle, it stops...
The shutdown plunger is clear of the stop lever.
Iver. |
Luvrbus (Luvrbus)
Registered Member
Username: Luvrbus
Post Number: 124
Registered: 8-2006
Posted From: 74.32.84.136
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 25, 2007 - 12:40 pm: | |
if you have a jake brake you need to check your buffer switch adjustment |
Iver (Mciv)
Registered Member
Username: Mciv
Post Number: 15
Registered: 11-2006
Posted From: 70.69.132.80
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 26, 2007 - 12:14 am: | |
Buffer switch is backed out as suggested in the book. Then adjust the idle.
The idle screw(bolt) doesn't seem to have any effect even when turned all the way in.
Iver. |
Luvrbus (Luvrbus)
Registered Member
Username: Luvrbus
Post Number: 126
Registered: 8-2006
Posted From: 74.32.84.136
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 26, 2007 - 7:56 pm: | |
Iver, which governer do you have and have you checked to see if the low speed spring is not broken and the seat is in good and i guess you have the wedge and gauge.over on the DD board they have some good 2 stroke people but it seems like no one will help with governors.you may know of this group but i will give it to you anyway http://auto.group.yahoo.com/group/detroit diesel good luck
(Message edited by luvrbus on October 26, 2007) |