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White Smoke

DieselCash

DieselCash

Trust but, verify
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Location
Salado, Texas
This is for my brothers truck.

It is a 92 Chevrolet K2500 6.5TD, NV4500 reg cab that I found for him for $1500.

It starts and idles fine. The lift pump is new and freshly replaced. It has a new freshly replaced fuel filter.

With the oil cap off it has no puffs of smoke. The radiator does not get hard upon start up either.

When you drive and put a load on the motor it puts out large amounts of white smoke.

I think he has one or more bad injectors.

What do yall think?

Here is a picture of it on the trailer from yesterday when I took it up to Denton.
IMG_0396.jpg
 
Sounds like a good place to start, but could also be injection timing off as well or a restriction in the intake.
 
Air filter and up to turbo is good.

He is going to see if he can find a timing tool.

He says it smokes worst than a james bond movie car
 
is it completely white, or slightly gray? my 93 pukes white-gray smoke out upon startup, and warmup, but once it is warm it is clear. has he been able to get it to operating temperature?

PS: nice truck, and a round of applause to you for saving a 5 speed truck!
 
GM Guy said:
is it completely white, or slightly gray? my 93 pukes white-gray smoke out upon startup, and warmup, but once it is warm it is clear. has he been able to get it to operating temperature?

PS: nice truck, and a round of applause to you for saving a 5 speed truck!
Click to expand...

He states it is white smoke. It only does this while driving. It does this after being warmed up or cold.

At idle it is clear. He stated it does seems to shake the truck a lot at idle.

Something is just not right, wish I was there to help.

Thanks! :thumbsup:
 
More info;

While at idle, if you place it in gear and let of the clutch with lite accelerator pedal. The motor produces a loud knock.

He states that it has power and pulls hard just, produces enough white smoke to be a james bond truck.
 
Hello all, I am the owner of this truck. Thanks for all the help on T/S the white smoke problem I am having. My Internet is down and I am posting from my phone, if were up I would have posted yesterday.

It has a fuel knock under light load with no throttle applied ( from a stop). I have not driven it far enough to know if I have a coolant or oil consumption problem. The WHITE smoke smells strongly of fuel.

Thanks again
John
 
matuva said:
I'm with ak, but I think of a damaged or broken valve too...
Click to expand...
ak diesel driver said:
sounds like injectors
Click to expand...
Yep. I would pull the injectors and test them. And while you have the lines off you might as well pull the valve covers and inspect the valve train. Look for the usual, high wear, cracked rockers, broken springs, spin the push rods in place and look for bent ones. Do a compression test as much to see what is going on now as for later reference.
 
New injectors put in. The #3 injector and glow plug was soaking wet after a trip around the block.

He is picking up an compression tester.

I feel it is the injector pump.
 
I am going to do a compression test on Saturday. Since I have removed the new injectors, if I reinstall them for a compression test can I expect an accurate reading with used washers on the injectors?

Thanks in advance, John.
 
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