idle speed issues...desperate!

[landgreaser]

'85 BJ70. I know I belong in the int'l forum, but this problem seems like it spans borders. The idle speed is wildly out of control. I know this can be complicated, but where I live (Vancouver, BC), prices to fix this sort of thing are also wildly out of control, and I'm poor.

First it was just hovering at 1600 rpm's, then it crept passed 2200, and now it's well beyond 3k and I can't drive it -- getting a bad smell.

I need a lot of help to fix this. I know little about the fuel aspects of my cruiser, but I've got a little time in the next couple of days.

Can anyone help????

 

[PabloCruise]

I know ZERO about diesels, but it sounds like it is running away on you.

Did someone put gasoline in your diesel?

 

[Mace]

Sounds like whatever regulates the fuel at idle has lost it's seal and is allowing way too much fuel into the motor (I know not too much help)

 

[Pin_Head]

Engine speed on diesels is controlled by the amount of air and fuel and they are coordinately regulated. I would start by checking the linkage and throttle body. It might be something as simple as the return spring falling off.