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AMEDEE
AMEDEE, CHEVY TECHNICIAN
Category: Chevy
Satisfied Customers: 21788
Experience:  ASE MASTER TECHNICIAN ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
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Installing distributor in 1996 chevy k1500 5.7L need timing marks

Resolved Question:

installing distributor in 1996 chevy k1500 5.7L need timing marks
Submitted: 5 years ago.
Category: Chevy
Expert:  AMEDEE replied 5 years ago.
Hello!

Just be sure you mark the old distributor when removing it to ensure the new distributor gets installed correctly. After the distributor is installed, it cannot be turned to be adjusted.

Ignition Timing Adjustment

BASE TIMING
The distributor ignition system has no provision for timing adjustment. The base timing is preset when the engine is manufactured and no adjustment is possible.

TEST PROCEDURE
The ignition timing cannot be adjusted. The distributor may need adjusting to prevent crossfire. To insure proper alignment of the distributor, perform the following:



With the ignition OFF, install a scan tool to the DLC.
Start the engine and bring to normal operating temperature. IMPORTANT: Cam Retard Offset reading will not be accurate below 1000 RPM.
Increase engine speed to 1000 RPM.
Monitor the Cam Retard Offset.
If the Cam Retard indicates a value of 0°+/-2°, the distributor is properly adjusted.
If the Cam Retard does not indicate 0°+/-2°, the distributor must be adjusted.
ADJUSTING PROCEDURE


With the engine OFF, slightly loosen the distributor hold down bolt. IMPORTANT: Cam Retard Offset reading will not be accurate below 1000 RPM.
Start the engine and raise engine speed to 1000 RPM.
Using a scan tool monitor Cam Retard Offset.
Rotate the distributor as follows:
4.1. To compensate for a negative reading, rotate the distributor in the counterclockwise direction.
4.2. To compensate for a positive reading, rotate the distributor in the clockwise direction.

Repeat step 4 until 0°+/-2°, is obtained.
Turn the ignition OFF.
Tighten the distributor hold-down bolt to 3 Nm (25 lb. ft.).
Start the engine, raise engine speed to 1000 RPM and recheck Camshaft Retard Offset.


graphic
AMEDEE, CHEVY TECHNICIAN
Category: Chevy
Satisfied Customers: 21788
Experience: ASE MASTER TECHNICIAN ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
AMEDEE and 10 other Chevy Specialists are ready to help you
Customer: replied 5 years ago.

the distributor was removed with out marking anything . i need to know how to install it in the motor

Expert:  AMEDEE replied 5 years ago.
Well.... I would start by removing the spark plug in the number one cylinder and bring the piston to TDC on compression stroke going on power stroke. Then, install the new distributor so that the rotor points to the number one cylinder spark plug wire coming off of the distributor cap when the distributor sits all the way down. Then it should run and it can be tested and or verified that it is in right via scan tool.
Customer: replied 5 years ago.
ok is it the same a for 5.7L vortec engine horizonal dist. i have tried that
Expert:  AMEDEE replied 5 years ago.
YES
Customer: replied 5 years ago.
on the dist. housing there a 6 and 8 marked on it what do they mean or used for
Expert:  AMEDEE replied 5 years ago.
Where are they stamped on the housing?

Can you take a picture and up load?
Expert:  AMEDEE replied 5 years ago.


1996 Chevy Truck K 1500 P/U 4WD V8-5.7L VIN R
Page 1
Distributor: Service and Repair
Distributor Assembly Replacement
Remove or Disconnect
^ Make sure the ignition switch is "OFF."
CAUTION: If the distributor is removed from the engine, It can be re-installed
using "procedure A" as long as the crankshaft has not rotated from its Initial
position. if the intake manifold, cylinder head, crankshaft, camshaft, timing gear
or complete engine was removed or replaced, "procedure B" must be followed to
correctly install the distributor. A Diagnostic Trouble Code (DTC) code may also
indicate an Incorrectly installed distributor and engine or distributor damage may
occur. Procedure B must then be used.
Procedure A
1. Spark plug and coil leads from the distributor cap.
2. Three wire hail effect switch plug from the base of the distributor.
3. Two screws holding the distributor cap to the housing.
4. Distributor cap.
A. Use a grease pencil to note the position of the rotor segment in relation to
the distributor housing. Identify the mark with a 1.
B. The distributor housing and intake manifold should also be marked with a
grease pencil for proper alignment when reinstalling.
5. Mounting clamp hold down bolt.
6. Distributor.
^ As the distributor is being removed from the engine, you will notice the
rotor move in a counter-clockwise direction, 42°. This will appear as
slightly more than one clock position. Noting the position of the rotor
segment, by placing a second mark on the base of the distributor, will aid in
achieving proper rotor alignment during distributor installation. Be sure to
identify the second mark on the base with the number 2.
Install or Connect
A. If the original distributor is to be replaced, rather than repaired, remove
the new distributor cap. Using a grease pencil, place two marks on the new
distributor housing in the same location as the two marks on the original
housing.
B. When installing the distributor, align the rotor segment with the number 2
mark on the base of the distributor. Guide the distributor into place, making
sure the grease pencil marks on the distributor housing and the intake
manifold are in line. As the the distributor is being installed, you will
notice the rotor will move in a clockwise direction, 42°. ONCE THE
DISTRIBUT0R IS COMPLETELY SEATED, the rotor segment should be aligned with
the number 1 mark on the base. If the rotor segment is not aligned with the
number 1 mark, the gear teeth of the distributor and camshaft have meshed one
or more teeth out of time. To correct this condition, remove the distributor
and re-install it following the procedure at step B.
1. Distributor cap and mounting screws. Do not overtighten the screws as the boss
may strip.
2. Distributor mounting clamp and tighten to proper torque.
Tighten
^ Distributor clamp and bolt to 27 Nm (20 lbs. ft.)
^ Distributor cap screws to 4.5-5.0 Nm (40-45 lbs. in.)
3. Three wire hall effect switch connector to base of the distributor.
4. Spark plug and coil leads to the distributor cap.
^ If a check engine light is illuminated after installing the distributor and a
DTC P1345 is found, the distributor has been installed incorrectly. You now
must refer to procedure; B or proper distributor installation.
Procedure B
^ Bring the engine up to Top Dead Center (TDC) of cylinder number 1. Make sure
it is on the compression stroke.
A. Remove the distributor cap screws and cap to expose the rotor.
B. Align the pre-drilled indent hole in the distributor driven gear with the


1996 Chevy Truck K 1500 P/U 4WD V8-5.7L VIN R
Page 2
white painted alignment line on the lower portion of the shaft housing. The
rotor segment should point to the cap hold area as shown in the illustration.
C. Using a long screw driver, align the oil pump drive shaft in the engine in
the mating drive tab in the distributor.
D. Guide the distributor into place, making sure the the spark plug towers are
perpendicular to the center line of the engine.
E. ONCE The DISTRIBUTOR IS FULLY SEATED, the rotor segment should be aligned
with the pointer cast into the distributor base. This pointer will have a "8"
cast into it, indicating the distributor is to be used in a 8 cylinder
engine. if the rotor segment does not come within a few degrees of the
pointer, the gear mesh between the distributor and camshaft may be off a
tooth or more. If this is the case, repeat the procedure again to achieve
proper alignment.
Install or Connect
1. Cap and mounting screws. Do not overtighten as the boss may strip.
2. Distributor mounting clamp and tighten to proper torque.
Tighten
^ Distributor clamp and bolt to 27 Nm (20 lbs. ft.)
^ Distributor cap screws to 4.5-5.0 Nm (40-45 lbs. in.)
3. Three wire hall effect switch plug to base of distributor.
4. Spark plug and coil leads to the distributor cap.
^ If a check engine light is illuminated after installing the distributor and a
DTC P1345 is found, the distributor has been installed incorrectly.

Customer: replied 5 years ago.

thank you for your time have a good day ! thanks again

Expert:  AMEDEE replied 5 years ago.
Try installing the distributor so that the rotor is pointing to number 8. THis should do the trick if it does not work pointing to number 1 cylinder.

Let me know what happens!

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