12 valve...engine sputters...white smoke...
brand new injection pump...3gsk...100 plate...did it before with the previous injection pump...

...especially when cold...

...any idea? Need more info?

Thanks,
Will

 

Adjust the timing to 15-17 deg... look like its slipped.

 

timing was just set to 16.5...

...the truck did the same thing when it had the old pump with stock timing...

it's a 98 by the way...

when accelerating hard it usually sputters right at 2000rpm but if you keep your foot in it it'll usually kick back in around 2500-2900rpm...

 

ok, so I searched like I should have done before...found a couple of things...

fuel lines look good...I guess...they're not falling apart like the ones on my 95 that I replaced...how bad do they usually look before they start letting air in...

I read something about the overflow valve...where is it?...got a pic?

fuel filter is new...

timing is dead on...

motor has 191,000 ....time for new injectors?....

thanks

 

It,s the overflow valve!! look at the front of your fule pump next to the block. looks like a banjo fitting. easy fix!!

 

Checked the injectors?

 

If the overflow valve isnt the culprit (which i kind of doubt, considering the pump is new) i might take a wild guess and say youve got a bad injector. My cousin had a bad injector in his truck and it ran like crap. Smoked and popped and carried on too. Put a new injector in and all was good.

 

Replacing the OF valve is a five minute one wrench job if you don't drop the sealing washers, stuff a rag under the valve to catch a falling washer. Remove the old valve and put new one in it's place. Occasionally the notch in the manifold you see to the left of the OF valve in the picture needs to be filed or ground a little to allow the old valve to be removed. Don't bend the line to remove the valve, it will make it very difficult to line up again. New style OF valves don't always have the retainer on top that says not to remove, don't worry it's just a design change.

The object in the lower left corner is the oil fill cap.



You won't find a better price on an overflow valve than here

Precision Diesel Injection and Turbo Inc.
Marty Tompkins
888-734-7349
$35 + $7 shipping and handling.

 

try pinching the fuel return line and see if it helps,if yes bad overflow valve.