I hade a no 4 stuck exhaust valve with a small water leak at the front
intake gasket. I pulled the heads, sent out for a valve job, used sealer
on the intake manifold to fill in the pitting there. I installed the
distributer,I started the motor, turned the distributer and the motor
stalled. I stoped, checked the rotor position with my 2000 van, moved the
rotor one tooth clock wise, started the engine and the check engine light
stays on. Disconted the battery over night it came on with in 15 seconds.
Went to Advance Auto the code said missfire, at Auto Zone they could not
read the code it was a gm code. which way should i go? Try to fix it my
self, take it to a privite shop, or to a gm shop? thank you!
This is how a dealer is supposed to check it....
You cannot adjust the ignition timing. You may need to adjust the
distributor in order to prevent crossfire. To insure proper alignment
of the distributor, perform the following:
1. With the ignition OFF, connect the scan tool.
2. Start the engine. Allow the engine to idle until the engine
reaches the normal operating temperature. ImportantThe Cam Retard
Offset reading will not be accurate below 1,000 RPM.
3. Increase the engine speed to 1,000 RPM while performing the
4. Use the scan tool in order to monitor the Cam Retard Offset.
5. If the Cam Retard indicates a value of 0 degrees, the
distributor is properly adjusted.
6. If the Cam Retard does not indicate 0 degrees, the distributor
must be adjusted.
To fix it do this;
With the engine OFF, slightly loosen the distributor hold down bolt.
The Cam Retard Offset reading will not be accurate below 1,000 RPM.
# Start the engine and raise the engine speed to 1,000 RPM.
# Use the scan tool in order to monitor the Cam Retard Offset.
# Rotate the distributor as follows:
* To compensate for a negative reading, rotate the distributor in
the counterclockwise direction.
* To compensate for a positive reading, rotate the distributor in
the clockwise direction.
# Repeat step 4 until 0 degrees is obtained.
# Turn OFF the ignition.
# Tighten distributor
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