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-   -   Rough idle, barely runs 94 6.5td (https://www.dieselbombers.com/chevy-gmc-6-2l-6-5l/92805-rough-idle-barely-runs-94-6-5td.html)

ebarresi5894 04-03-2012 10:23 AM

try this:
http://www.oliverdiesel.com/tech/timing.htm[/URL]

muderxtreme 04-03-2012 10:48 AM


Originally Posted by ebarresi5894 (Post 878742)
try this:
http://www.oliverdiesel.com/tech/timing.htm[/URL]

Isnt that what's used to time db2's? I'm using the ds4 because I couldn't get the db2 to push fuel.

great white 04-03-2012 04:41 PM


Originally Posted by muderxtreme (Post 878751)
Isnt that what's used to time db2's? I'm using the ds4 because I couldn't get the db2 to push fuel.

yup, that's for a DB2.

DS4 obd I:

FYI: TDCO - Timing the DS4 Injection Pump

ebarresi5894 04-04-2012 07:58 AM

oops read it wrong i thought you swapped to DB2 not DS4 my bad

muderxtreme 05-02-2012 07:58 AM

update, i got the full program from engh motors. i tried to do that ehole procedure but its still throwing cylinder balance faults and now i got a code 88 offset error.
desired timing 7
actual timing 7.1
tdco -2.02

what am i doing wrong?

ebarresi5894 05-02-2012 10:05 AM

not to sound dumb, but i thought the timing is 3.5?

muderxtreme 05-02-2012 10:30 AM

i went back and read that how to again and it is suppost to be ~3.5. i tried to turn the pump but its at its limit. i took the timing cover off thinking the gear moved when i was changing pumps but the gears are lined up. possible that key sheared in crank?

ok so all the gears are good and no keys were sheared. guess ill put it all back together and see if maybe i put the injection lines on wrong or something. im at a loss as whats wrong with this thing.

great white 05-02-2012 01:14 PM

Well, the timing is maxed out for sure.

Are you turning the pump in the right direction for base timing adjustments?

Turn to the passenger side is retard , turn to the drivers side is advance.

muderxtreme 05-02-2012 06:54 PM

i got the timing down to around 3.5-4. tdco set at 1.5 so my code 88 went away. which way do i need to move the pump to get tdco to set a negative value? and im still getting cylinder balance faults and it wont rev and runs rough.

great white 05-02-2012 07:28 PM

Negative tdco is to the drivers side....


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