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1973 NTC-350 excessive white smoke

Posted By Apecycle Sunday, March 27, 2011 3:06 AM
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Apecycle
 Posted Sunday, March 27, 2011 3:06 AM
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ESN 10305674, fuel pump part # AR10475, fuel pump calibration 2612, CPL 160, but on the fuel pump it reads CPL 632. replaced with recon injectors, now have excessive white smoke. any ideas

HELEN WHEELS
Daryl Gushee
 Posted Sunday, March 27, 2011 3:43 AM
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Why did you replace the injectors? What was wrong?

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I can break anything.

Daryl Gushee
New Gloucester, Maine
Apecycle
 Posted Sunday, March 27, 2011 4:01 AM
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I had to replace an injector and found that i had three different injectors 3018350, 3054249, 3018332. so i went with 3018350. starts fine, runs good, smokes like a demon

HELEN WHEELS
glenn akers
 Posted Sunday, March 27, 2011 4:17 AM
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You may be running over head wrong . With wrong injector it would not smoke like that

glenn akers
Apecycle
 Posted Sunday, March 27, 2011 4:20 AM
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running over head wrong? could you give more detail?

HELEN WHEELS
Daryl Gushee
 Posted Sunday, March 27, 2011 4:23 AM
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I don't have any books to tell me your correct fuel pump and injectors for that engine. I suspect it's either the wrong injectors or wrong adjustment. I would run the overhead adjustment again. There was a couple threads a few weeks ago that explain Cummins adjustment procedure in simple terms. I can give you adjustment specs if you need them.

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Daryl Gushee
New Gloucester, Maine
Apecycle
 Posted Sunday, March 27, 2011 4:26 AM
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what i have done...Did the torque method first, could not get motor started, so then did the no lash method, found to be 3/4 turn to tight while doing the no lash method, re-adjusted injectors , then had to slightly re-adjust jake brake, valves where still adjusted correctly

HELEN WHEELS
Apecycle
 Posted Sunday, March 27, 2011 4:29 AM
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I would like anything you can give me at this point. I am trying to get this beast down to Lousiville for the truck show. Thank you for your time

I can give you adjustment specs if you need them...YES I need them if you could post I would greatly appreciate it


HELEN WHEELS
Sunday, March 27, 2011 4:32 AM by Apecycle
Daryl Gushee
 Posted Sunday, March 27, 2011 5:08 AM
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With aluminum rocker housings, cold, 70 degrees.
injectors, 72 inch pounds.
intake, .014"
exhaust, .027"
With cast iron rocker housings, cold, 70 degrees.
injectors, 48 inch pounds.
intake, .016"
exhaust, .029"

It is imperative that you are doing the procedure correctly or you will have bad results. I recently outlined the procedure in a previous thread for a 230  Cummins. The procedure is the same.  You should go back and look for it in the forum. It may save you a whole bunch of time.
Before you try to readjust inspect your push tubes to make sure they are straight. Roll them on a flat surface. Do not re use a bent tube. It's also a good idea to do what I call "ring em". That is to tap the side of them on a solid piece of steel. The push tubes should have a nice ring. If they have a thud type sound, replace them. It is a sign the tube has a crack and it will fail.


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I can break anything.

Daryl Gushee
New Gloucester, Maine
Apecycle
 Posted Sunday, March 27, 2011 5:15 AM
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Thank you, Thank you!

I will do as you suggest, and get back to you later, unless I'm crying in a beer out in the shop, that may take an extra day


HELEN WHEELS

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