Smoke at start up you say?

[DieselBuzz]

I've had this problem that has gotten progressively worse since the spring. My truck has been smoking at start up. At first it was more haze but it has been progressing. My attempts to fix have been: fuel additive (hanging injectors),

backing the timing off, afc screw set flush, cone at stock, turning out the fuel screw. Now in the warm weather it skips and I can make black smoke by pushing it and it's white when I back off. Once the engine warms just a little the misfiring stops. Then at normal temp it still produces a good amount blue haze. The truck just turned 200K I had the pump rebuilt by Boston Injection about 50K ago. I have installed a 3K gov spring this spring but even when I was having trouble bringing the idle back down from a deep fuel screw it didn't smoke like it is now. Does the KSB work even on the summer until the engine warms and I might have a weak solidniod(I'm not a speller)? I'm open to suggestions, TIA

 

[Greenleaf]

Smoke at start-up?

Your serious about persuing this?



Is there a reason it never smoked before? Perhaps the engine wasn't right prior to this and now it fixed itself... ... ... ... ... ...

 

[DieselBuzz]

I don't mind a little smoke or haze, but I can look like the county bug fogger on crack. I know that it is missfiring to start with, that alone doesn't make me feel good.

PS I did the fuel filter 3K ago

 

[Forrest Nearing]

you sure the timing hasn't slipped?

 

[DieselBuzz]

I had the head(afc) of the pump pretty close to the engine and backed it away or down 1/8" and it didn't make much of a difference.

 

[dpuckett]

Sounds like possibly injectors. Additives can oly clean them out- they wont make up for wear and low pop pressures. After that, I'd check the timing with a gauge, after finding TDC while you have the sticks out.



Daniel

 

[MMiller]

you sure the timing hasn't slipped?

Forrest, are you thinking about the Ppumps that don't have a keyed drive gear? VE's I am pretty sure are keyed, so timing shouldn't slip like a Ppump can.



I'd start loosening injectors to find the missing one, and at least pull it out and maybe swap holes to see if the miss moves with the injector, or stays in the same cylinder. Then you can decide if its the pump or the engine. *I* lean more towards the injectors right now.



Michael

 

[DieselBuzz]

Hey, thanks for the ideas. I haven't adjusted the valves in a while, could they give me simular symptoms?

 

[dpuckett]

They could, but they'd have to be pretty bad, like my 2 TX trucks were.



Also, about loosening one injector at a time and listening for a drop in RPM. That isnt foolproof. Mom had 2 bad injctors, and I noticed no difference doing that "test" Apparently, they have to be pretty bad before they will affect idle. Plus, if they are ALL equally bad, it wont make any difference either. BTDT. (Been There, Done That)



Daniel

 

[DieselBuzz]

Gee, if I have to....

Thanks Daniel, I'll have to try that test. Would anyone else use this as the excuse to get new injectors? :-laf

 

[PToombs]

Naw! None of us would EVER do something like that!

 

[dpuckett]

Would anyone else use this as the excuse to get new injectors? :-laf

2 or 3 times in the last couple years. Just do your homework before deciding what to go with.



-DP

 

[DieselBuzz]

Well I don't think it was the injectors. I got a set of PODs and now it smokes a little more. I'm in the process of chacing down a line on a $400 NOS pump. The present pump has 201k with one rebuild at 140k. Maybe it is the plunger return springs? I have heard they go around 200k. It was funny, I took the hood off to get at the rear injectors easier. So, when I went to get the air out of the fuel lines by cranking it with the lines loose the #1 shot a stream of fuel 10ft in the air. The other ones didn't do as well, I chalked it up to them being looser. I didn't want to think it could be the pump.



Well, I guess I'll have to keep the truck that much longer to get my money's worth out of my new parts. . . and my friend thinks it's unreliable, he just doesn't understand.