BJ60 Rough Idle

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Joined
Apr 11, 2010
Threads
4
Messages
11
Location
NW Ontario Canada
I am back to fixen my 82 Diesel and I am wondering what my 3b should act like. It idles at about 500 and its rough and noisy. It has loud clackin top end. It seems to run and sound better when I give it throttle. I am still running fuel that sat last winter or longer. I just got the truck in april and had to fix electrical issues so it would run, I changed the fuel filter and added some diesel treat but never changed glow plugs. Do I need to get the injectors cleaned and timed and what else should I do? Any help would be appreciated.
 
let it warm up, use some good fuel, and set the idle at 750 or so it will sound alot happier
 
Injectors should be done every 100,000 kms.

Does it hold the idle well or does it threaten to stall when you let off the fuel? If it threatens to stall you may have a diaphragm problem to fix.
 
500 is too low. 650 is spec. I'm not even sure mine will idle at 500; even if it did I have no doubt it'd shake like an epileptic.

X2 on that! I have mine set to about 750 on the factory guage (not terribly accurate...), I just slowly raised it (with a fully warm engine) until it smoothed out. Idles lovely now.
 
Injectors don't need to be done every 100k kms from my experience. like they said 500 is too low and is probably harmful to the engine, so once it is up then it should be ok. If the diaphram hasn't been changed then change it anyway as it is next to go.
 
It depends on the type of driving and the quality of the injector tips used. Most often they get carboned up and plugged. The tips do wear as well which affects the spray pattern. They may also need to be reshimmed to ensure a correct breaking pressure - good spray pattern and no dribble.
 
Could also be a loose injector line. Make sure all your lines are dry.
 
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