Engine binding up on newly rebuilt engine

1998 CHEVROLET BLAZER
171,000 MILES • 4.3L • 6 CYL • 2WD • AUTOMATIC
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BRIBRI4275
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I just rebuilt the engine on the vehicle, listed above and I believe I have the timing and everything right, but when I try to start it the engine will turn for a few seconds does not start and binds up won't turn anymore. What am I doing wrong?
Feb 20, 2022 at 11:40 AM
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ASEMASTER6371
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Good morning,

Remove the spark plugs and crank the motor and see if it spins free without binding up.

https://www.2carpros.com/articles/car-not-running-advanced

If it is good, then it could be timing.

https://www.2carpros.com/articles/how-to-change-spark-plugs

It binds up, then it could be internal.

Roy
Feb 21, 2022 at 1:31 AM
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BRIBRI4275
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I took out all the spark plugs but when I got to #3 spark plug gas started pouring out. Why is that?
Feb 21, 2022 at 9:08 AM
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ASEMASTER6371
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Okay, it sounds like the injector is stuck open and filling the cylinder with fuel.

The motor is a hydro lock as you cannot compress a liquid.

I would replace the injector.

I attached the procedure below for you. You will need to replace the entire unit for an injector. It is called a spider unit.



Roy
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Feb 21, 2022 at 9:36 AM
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BRIBRI4275
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Thanks, I will try that and let you know how it goes.
Feb 21, 2022 at 12:22 PM
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ASEMASTER6371
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You are welcome.

Please keep us updated with the results.

Roy
Feb 21, 2022 at 2:27 PM