90 cummins in my suburban lopy idle issue

[DVolk]

My Burb has a idle issue . It has a 90 gen 1 engine with what im told

the injector pump that i bought for it since mine was bad is from a Blue Bird

190hp school bus .



The burb sat for a few years with a half tank of fuel (diesel)



when i first got it running a year ago it ran fine , but now with a couple hundred miles on it after nasty looking fuel i drained most of the fuel i could from the burbs drain valve on the tank with a pump , but it has a lopy idle

and i think its still not up to its potential , i replaced the fuel filter .



Has any one had this lopy idle issue , its kinda smoky but its the pump setting im shure , Any ideas ????? Thanks !!!!!!!!!!!!!!!!

 

[therabbittree]

check the injectors. . crack m individually while running and see if any of them make no difference in the idle etc... let us know...

 

[DVolk]

90 cummins in my suburban lopy idle issues

I cracked the injectors while running when warmed up no change .

I got a extra set of injectors im thing about trying those ?

 

[therabbittree]

what is it idling at rpm wise?... injectors aren't to bad to change out . . make sure you have some new copper washers. . that one probably has the 9mm holes too. .

thanks

Deo

 

[DVolk]

90 cummins in my suburban lopy idle issues

I dont have a tach so im guessing between 750 and 950 ?



I dont have any xtra washers so hopefully no leaks if i try that trick