Question about 1993 Chevrolet C1500

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I need to set timing on a c1500 1993 4.3

Firing order, damper timing marker identification which one, set to what degree, do you have to unplug anything to dissconect ecm from controlling timing. need step by step help please.

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If it is the same as the 4.3 in my 93 s-10 blazer the firing order is 1,2,3,4,5,6 with 1 being front dead center of ditributor(closest to intake manifold) if it is located at rear of engine. As you're standing in front of vehicle facing engine front right cylinder is #1 middle is #3 rear is #5. On left side #2 is front #4 is middle and #6 is rear. On my Blazer I have to disconnect the EST wire which is located inside the vehicle just below heater housing on passenger side(at top of floor carpet) in order to set timing. It is a single wire connection. Don't know if it is same location in the 1500. There should be a lable on top of the radiator area with the degree to set timing at. It is 0* for the s-10. If you have a parts store handy and have a few dollars available pick up a Chiltons soft cover repair manual for you vehicle. I got one for mine and it has been really useful. Hope all of this is helpful. I'll check to see if you get it set. KS

Posted on Mar 19, 2009

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How do put on a firing order?


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When setting the ignition timing on a 1991 ford ranger 3.0 were dose the rotor need to point, after number one or before number one? the engine is on top dead center


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Be sure that you follow the proper timing procedure for that vehicle and remove any timing spout connectors that are described in the set timing procedures

Also, be certain that you are actually using the #1 cylinder to set the engine to TDC and to actually time the engine with a timing light. Here is a firing order diagram that should also help to assist you. Let me know if you require any further assistance.






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