Engine/Transmission (1994 - 1998) Cold Smoke Question?

[Fordiesel69]

This is kind of a newbie question, but the only diesels I have been around is Fords. I tuned and got my old 6. 9L to start almost on the second stroke and runs silk smooth even down to the teens. It sure rattles, but no belch of white smoke.



On my 95, even if I wait the 15 seconds for the grids, it will still smoke white until it warms up, if I start and idle, it is smokeless, as soon as I increase the speed at all, it will stumble and smoke white. I have heard this is normal for cummins and that there is little you can do unless you plug it in.

 

[McCRam]

I wouldn't call that normal. We have four 12 valves on our ranch and they do not do that. There will be a light haze come out of the exhaust when they are cold, but that is it. If it stumbles while you accelerate, I would think you have a timing problem. But check the basics first, such as fuel filter and fuel leaks.

 

[JoeBioDiesel]

If it stumbles cold check the timing. I bump mine to about 15 degrees. Makes them cold start/run very nicely, and it's still kind to the head gasket.

White smoke comes from 2 places.

1) unburned fuel-can be caused by cold stating(normal), low compression and retarded timing.

2) water vapor-normal, especially evident with engine under boost and cold.



Get the timing set so it stops chugging cold and then stop worrying about it.



Joe

 

[Fordiesel69]

I am not really sure I would be able to set the timing myself without watching it being done first. I am still failing to understand how you can accuratly pull the gear off the pump shaft and somehow get it back on with the pump being timed from a plunger reading.



I wouldn't dare have a shop around my town do it. Not only would they charge over $300 but I am not sure they would be able to do it right.

 

[tgordon]

Let us know where you are, maybe somebody would stop by and help you out for a few barley pops and some cenversation.

 

[JoeBioDiesel]

I am not really sure I would be able to set the timing myself without watching it being done first. I am still failing to understand how you can accuratly pull the gear off the pump shaft and somehow get it back on with the pump being timed from a plunger reading.

Through trial and error, but experience makes you faster. The timing tools are pretty expensive, but if you set your timing once or twice you recover the funds. I would only trust an experienced diesel tech or a Cummins Dealer to set it. Maybe there is a TDR member near you that you could bribe.

 

[Fordiesel69]

I am in Erie, PA. Right off I90 & Rt97.

 

[JoeBioDiesel]

There are one or two very active TDR groups down that way. Look in the "Local Chapters" forum. Try to hook up with someone down your way, or travel to one of their events. I've run into one or two of the Eastern Pa guys in my travels through that area. They seem like a nice bunch.

Joe

 

[tony597fitter]

Setting the timing is easy. All you need is the tools.

Here is instructions on how to do it.

CumminsDatabase.com :: P7100 Injection Pump Timing



Snap-on makes a nice timing tool kit. heres the link for the tool kit.

SP500, Set, Diesel Timing Gauge

 

[Wedge]

Let us know where you are, maybe somebody would stop by and help you out for a few barley pops and some cenversation.

tgordon what part of Wisconsin are you in? I might need some help.

 

[95REDRAM]

Yes, this is normal for a 95 12V. They did it brand new and still do it now. Timing will help some but the best thing is just plug it in. 12V's are OLD SCHOOL.