View Full Version : Injection Pump Timing
What is involved in setting the timing on the injection pump. Some of you thought I might need to check that to see if it was causing my hard start problem. Can the dealer shop do it right? Is a scanner needed?
PHID,
YOU'LL NEED A BI-DIRECTIONAL SCANNER SUCH AS A TECH 1 OR 2! IT HAS TO BE ABLE TO DO A TDC OFFSET LEARN. SURELY SOME OF THESE GOOD OLE BOYS ON TDP IN YOUR AREA WOULD BE ABLE TO HELP YOU OUT! A DEALER CAN CHECK IT FOR YOU ALSO,MAKE SURE YOU HAVE IT SET TO AT LEAST -1.50! MOST GUYS TRY TO GET -1.94 THESE ENGINES SEEM TO RUN GOOD AT THAT SETTING!!!!
BIGG R
DennisG01
11-16-2004, 07:25
I once asked a dealer about this and he had no clue what I was talking about. Is this a hard thing (time consuming) for a dealer to do?
Spindrift
11-16-2004, 10:57
My dealer charged me $109...and I still had to buy my own coffee. Got to watch CNN for free while I waited.
Spindrift
Next time take a trip to the Island. Takes 5 minutes.
Cost you fuel & tolls.
Spindrift
11-16-2004, 13:54
Originally posted by Billman:
Takes 5 minutes. Billy...I think you've been sniffin' too many of those gosh darn diesel fumes. 5 minutes to the Island? Didn't you mean to say 5 hours?!
Ohhh...5 minutes in the shop.
Just funnin' with 'ya.
Mighty nice offer. Thanks much. Would love to get up there sometime and compare notes. Remember that post of yours a while back regarding your truck's torque reading thru the Tech II? Last night I had the opportunity to play with EASE Diagnostics scanning software. At WOT, I saw 487 lb.-ft.! It certainly wasn't the 396 lb.-ft. that the DynoJet run gave me. But hey, I won't tell if you don't.
jdmetcalf57
11-16-2004, 16:20
Regarding the techII torque reading I saw in the GM service manual a couple of days ago that it is calculated based on various engine parameters but is supposed to be accurate within 15 ft-lbs.
DennisG01
11-17-2004, 06:50
What are the positives and negatives of setting the timing to "-1.94"? How much of a difference does it really make? What about increased heat? Thanks! :cool:
I HAD ALREADY INTERCOOLED MY TRUCK WHEN I RESET MY TIMING SO I NEVER NOTICED ANY INCREASED HEAT,BUT THE POWER INCREASE WAS DEFINITELY NOTICABLE,COLD STARTS GOT BETTER TOO!!!
BIGG R
Turbine Doc
11-17-2004, 19:31
Phid,
What truck you got OBDII 96+ years can also be set with a Snap On scanner most general automotive shops have those.
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