Engine binding up on newly rebuilt engine

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?

Sunday, February 20th, 2022 AT 11:40 AM

5 Replies

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

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

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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