97 6.5 changed ip now blows white smoke code 216

[97gmc6.5]

I have a 97 1500 6.5 turbo and i've changed the injection pump because it stopped running with the old one. Now it runs with the newer pump but its blowing white smoke and has code P0216 -- Injection Timing Control Circuit

What is Injection Timing Control Circuit? And what can i do about it?

 

[smokin69]

White smoke is from not having burning the fuel. Probably didn't line the pump up right and its enough out of time to make a difference.

 

[97gmc6.5]

i change the stepper motor. but that didnt change the smoking
i moved the ip to the drivers side 3/16" and that helped the smoking a lot but its missing and smoking from 2000rpm and up.
does anybody have a tech 2 scaner near wilmington NC?

 

[dieseldummy]

A local dealer or larger independent repair shop should have a tech 2 and be able to set the timing for you. There are other scanners/software that can do a timing offset learn for you too.

 

[97gmc6.5]

I got a snap-on 2500 and set the timing close to 3.5. It was changing from 3.0-4.0 i guess the stepper motor does that.
actual inj timing was about 11.0 and desired inj timing about 3.5
I set the TDC offset to -5.4 I read that the snap-on scanner reads different and that -5.4 is really -1.94
It runs ok now but its hard to start cold and still got the code 0216 every time i check it and delete it
I'm going to check it with a gm Tech II to see if its set right.

 

[h2odrx]

hey welcome to the site, don't know much about the 6.5 but what side of Wilmington you at?

 

[97gmc6.5]

I'm north of wilmington 10mi in Hampstead.

I checked the timing with a Tech II and the TDC offset was -2.44 so i moved the pump some and got the actual timing to average 3.5 going from 2.8-4.1 and a desired timing of 11.1 and i got the TDC offset the land on -1.94 it had a range from -1.67/-2.20
The Inj. pump sol. closure is from 1.82-1.94ms
And i'm still getting the DTC P0216 ***??

 

[97gmc6.5]

I'm north of wilmington 10mi in Hampstead.

I checked the timing with a Tech II and the TDC offset was -2.44 so i moved the pump some and got the actual timing to average 3.5 going from 2.8-4.1 and a desired timing of 11.1 and i got the TDC offset the land on -1.94 it had a range from -1.67/-2.20
The Inj. pump sol. closure is from 1.82-1.94ms
And i'm still getting the DTC P0216 ***??

The stepper motor is not moving to advance the timing so the actual timing stays at 3.5!

 

[97gmc6.5]

The stepper motor is not moving to advance the timing so the actual timing stays at 3.5!

OK I checked the volts at the connector that plugs in to the
stepper motor with the key on 12v, 4v, 12v, 4v, then with
the engine running all four have about 7volts but both the
stepper motors i have do not move with the key on or
running. The advance linkage will move about 3/8"

 

[97gmc6.5]

Ok i found the problem the valve in the advance piston stuck due to
varnished fuel or contamination from moisture sitting in the
bottom of the pump.
I had to take the injection pump back off to get to it and the
advance linkage was moving but the valve in the advance piston was
stuck and the spring that keeps the valve pushed out was stuck too!