1984 International S1654. 6.9

SkipperF

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I have an 84 international 1654 with a 6.9 that I haul logs with. The truck is always tough to get started mst of the time I have to use starting fluid sometimes if I just turn it off for a few mins and other times it’ll start right back up. It blue smokes awful on startup. But usually runs great and I can haul 1500mbf of logs with it through the hills of WV with no real trouble. But today it started missing, black smoke poured and it lost power. Got to the top of the hill pulled off it cleared up. Ran fine 10 more miles was pulling another hill it done it again, then it cleared up. As I went on the problem would come and go I got unloaded and coming back on level ground it still intermittently missed and black smoked. It seemed to be worse at crushing speeds with only a little throttle more than WOT or barley hitting the fuel. Does that sound like an injector sticking open or what
 

franklin2

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If you want to try something, take the fuel filter off, pour it out, fill it with automatic transmission fluid. Get the engine started and let it run for a minute and then shut it off. Let it sit for a day or two and then try it out and see what happens. Sometimes things get sticky inside the fuel injection pump, and the detergents in the auto tranny fluid will loosen it up.
 

rhkcommander

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Check your air filter too. Black means unburnt fuel is being dumped in and back out the exhaust. Maybe you floored it when it started missing?

Blue means your burning oil, rings are probably worn. Grayish white is just it warming up.

Shouldn't use ether if your glow plugs are still plugged in, you can blow stuff up. Intake, block, bad news. Even if they dont work right, only takes 1 hot plug. Either fix them or ditch them, but dont use ether with them.

Open the oil cap with it running, should be a light haze coming out.
 

franklin2

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What is confusing to me, is if the injection pump timing is off, it will smoke blue also correct?
 

rhkcommander

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What is confusing to me, is if the injection pump timing is off, it will smoke blue also correct?
You can try advancing timing but its usually rings or valve seals leaking oil.
 
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