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need to know the timing setting
Sent to Car Experts May 28 03:37 PM

I need to know what timing adavanc for a 91 chevy s-10 4x4 with the 4.3 5 speed my veci label is unreadable

Customer (name blocked for privacy)
Status:  Closed   Value: $3
Answer
May 28 9:40 PM (6 hours and 2 minutes and 41 seconds later)
         
REPLIEDCheck Mark

 The spec for base ignition timing is zero degrees TDC for both the manual and automatic versions of this vehicle.   It is important to follow the procedure for setting the timing though; if you do not disable the apark advance system you will not be able to accurately make adjustments.

  Here is the procedure, in case you don't have it:

 

PROCEDURE:

Set timing under the following conditions:

  • Normal operating temperature.
  • Air cleaner installed.
  • A/C "OFF".
  • Transmission in neutral.
  • Disconnect the SET TIMING connector (tan/black wire), taped to the harness below the heater case in the passenger compartment. DO NOT disconnect 4 wire connector at distributor.

Connect timing light and adjust to specification by loosening hold down bolt and rotating distributor. See: Specifications

Tighten hold down and recheck the timing. Stop the engine and connect SET TIMING connector. Clear ECM trouble code by disconnecting ECM power source. With engine at operating temperature, drive vehicle at part throttle with moderate acceleration and decelerate to idle condition. This will "teach" the ECM/VCM and return the engine to normal performance.

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Steve7654 -- Auto Service Technician -- 99% Positive Feedback on 1726 Car Accepts
27 yrs ASE L1 Master Technician, Service manager
Reply
May 28 10:06 PM (25 minutes and 43 seconds later)
         
Reply to Steve7654's Post: thanks so much for the info i already new bout spark advance d/c but i coulnt read my veci label but my pointer is rusty also it has a long point then like three ridges is the long point the one that means 0* tdc thanks i will send my payment shortly


Roy D. Vance
Customer (name blocked for privacy)
Answer
May 29 6:33 PM (20 hours and 27 minutes and 12 seconds later)
         
REPLIEDCheck Mark

 Thank you;

   If you need any more information in relation to this question, please do not hesitate to ask and I'll do my best to help...

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Steve7654 -- Auto Service Technician -- 99% Positive Feedback on 1726 Car Accepts
27 yrs ASE L1 Master Technician, Service manager
Reply
May 29 8:15 PM (1 hour and 42 minutes and 17 seconds later)
         
Reply to Steve7654's Post: i really appriciate the help there is one more thing the pointer is unreadable also it has a longer kinda point and a few ridges does the point read zero?and whatare the increments of the ridges. and thanks again.i will send u the payment next.

Edited by Customer (name blocked for privacy) on May 29 2005 at 8:16 PM

Roy D. Vance
Customer (name blocked for privacy)
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