GMTDScan Tech / IP Timing HELP!

[William McNett]

Newbe here
I bought this 94 k1500 w/ 228,000 miles a few weeks ago, it ran fine but started hard when cold, even if the block heater was plugged in. A little easier if I step on the accelerator pedal a little. A previous owner had told me the IP had been replaced along with a bunch of other stuff. Like injectors, glow plugs, heads, .........
To check things out I hooked up GMTDScan Basic and looked at stuff. Seen an IP timing of 6.5º w/ a TDCO of -1.5º so I paid for a GMTDScan Tech licence and proceed to attempt to do a Time Set / TDCO Learn.
After checking and clearing codes.
I click Time Set the truck dies. so I restart it and try again. Try again, dies.
Then I recall reading something about 1000 rpm, so I set the rpm around 1000, do a time set on for a few seconds, turn it off, do a tdco learn for a few seconds, turn it off

TDCO is now at 1.5º, it's blowing white smoke and will hardly stay running.

 

[NVW]

Try rotating the IP about 1mm to the drivers side and start over.

 

[William McNett]

1st mistake, tried to do it when it's finally freezing here in S.E. Michigan, thinking I needed a new thermostat, and doing so with the engine temp under 170º
If I need to move it, I will when I find/make a wrench to get at the passenger side nut.
I'm going to see if I can get it started and take if for a drive to get it warmed up.
If not I'll go shopping for a wrench.

 

[NVW]

I would do a time set and relearn with a warm engine before moving the IP.

 

[William McNett]

I'm in the truck, waiting for 180, at about 175 now

 

[William McNett]

here's where I'm at

ENGINE SENSORS
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Engine run time: 00:00:23
Boost pressure (MAP): 14.2 PSI
Desired EGR: 11.6 PSI
Desired idle: 638 RPM
EGR pressure: 11.6 PSI
EGR duty cycle: 39.5 %
Engine coolant temp: 185.4 F°
Engine speed: 619 RPM
Glow plug relay feedback: 0.1 Volts
Glow plug voltage: 0.1 Volts
Ignition voltage: 13.1 Volts
Wastegate duty cycle: 72.3 %


INJECTION PUMP SENSORS
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Actual injection pump timing: 27.81 Deg °
Cam reference missed: 0 Counts
Crank reference missed: 0 Counts
Fuel calibration: 125 Counts
Fuel rate: 7.19 mm³
Fuel rate - Cruise: 0 mm³
Fuel rate - Idle: 7.5 mm³
Fuel rate - Maximum transient: 42.5 mm³
Fuel rate - Throttle requested: 0 mm³
Injection pulse width: 1.94 ms
Injection timing - Measured: 6.7 Deg °
Injection timing - Desired: 6.6 Deg °
TDC offset: 1.85 Deg °

Time to find a wrench

 

[William McNett]

When doing Time Set, is it normal for the Actual Injection Timing to quickly jump around a lot?
like between 2.5º and 4.5º

I'm guessing, yes, if the timing chain is a little wooped

 

[William McNett]

I need to find a better wrench, guess I'll order one or make a drive to Harbor Freight, perhaps if the Sears store wouldn't have closed.

Here's where I am now

Snapshot created 12/23/2012 5:26:45 PM
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ENGINE SENSORS
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Engine run time: 00:15:56
Boost pressure (MAP): 14.01 PSI
Desired EGR: 11.6 PSI
Desired idle: 562 RPM
EGR pressure: 11.75 PSI
EGR duty cycle: 37.1 %
Engine coolant temp: 177.1 F°
Engine speed: 562 RPM
Glow plug relay feedback: 0.1 Volts
Glow plug voltage: 0.1 Volts
Ignition voltage: 13.1 Volts
Wastegate duty cycle: 73.4 %

__________________________________________________________________
INFORMATION SENSORS
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PCM Calibration ID: 9945
Current DTCs: 0
Accel. ped. pos. 1: 0.59 Volts
Accel. ped. pos. 2: 4.47 Volts
Accel. ped. pos. 3: 4.08 Volts
Barometric pressure (BARO): 13.4 PSI
Battery voltage: 13.2 Volts
Fuel temperature: 87.3 F°
Intake air temp: 96 F°
Throttle position: 0 %
Turbo boost (Calculated): 0.61 PSI
Voltage reference sensor: 1.3 Volts

__________________________________________________________________
INJECTION PUMP SENSORS
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Actual injection pump timing: 27.98 Deg °
Cam reference missed: 0 Counts
Crank reference missed: 0 Counts
Fuel calibration: 125 Counts
Fuel rate: 7.5 mm³
Fuel rate - Cruise: 0 mm³
Fuel rate - Idle: 7.5 mm³
Fuel rate - Maximum transient: 42.5 mm³
Fuel rate - Throttle requested: 0 mm³
Injection pulse width: 1.93 ms
Injection timing - Measured: 6.8 Deg °
Injection timing - Desired: 6.6 Deg °
TDC offset: -0.53 Deg °

Don't see how to get the timing down to 3.5º

Really need a new thermostat and timing chain set.

 

[NVW]

You're fine where it's at, your measured and desired are OK. It is usually above 3.5*, mine is 8.5*

In Time Set, IIRC it will be at 3.5*

 

[William McNett]

Amazing, went out today and it fired right up. no more trying 4 or more times