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Engine binding up on newly rebuilt engine

Tiny
BRIBRI4275
  • MEMBER
  • 1998 CHEVROLET BLAZER
  • 4.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 171,000 MILES
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?
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Sunday, February 20th, 2022 AT 11:40 AM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
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Monday, February 21st, 2022 AT 1:31 AM
Tiny
BRIBRI4275
  • MEMBER
  • 23 POSTS
I took out all the spark plugs but when I got to #3 spark plug gas started pouring out. Why is that?
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Monday, February 21st, 2022 AT 9:08 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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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Monday, February 21st, 2022 AT 9:36 AM
Tiny
BRIBRI4275
  • MEMBER
  • 23 POSTS
Thanks, I will try that and let you know how it goes.
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Monday, February 21st, 2022 AT 12:22 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Please keep us updated with the results.

Roy
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Monday, February 21st, 2022 AT 2:27 PM

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