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No crank no start.

U

Undead auto

New member
My Pontiac has no crank. I replaced the batterie, the starter, I tested the ignition switch, all the grounds to the engine. The TRS isn't bad. Everything works up to the flywheel. I know the engine is not seized I can manually rotate it. When try to turn it over the flywheel moves about a inch, everything stops and it moves back again.
I am stumped on what's wrong with my vehical.
 




if its a na engine i bet its hydro locked form a failed upper intake, take the spark plugs, out, then crank it. if it spins free and coolant shoots out, that is the time you ask your self just how many times did i try to start it and it was moving that inch and back, cause doing that over and over and over will kill the rod bearing.
 
I didn't think of that I will be seeing if it's hydro locked. How does that happen?
Before this I was also having a issuses with misfires
 


If the motor is filled with coolant, try and drain a bunch out of the block then re-install the spark plugs. That way when you fire it up it won't fill with coolant again, if the motor starts knocking then it's toast. You can run it for several minutes with no coolant in it.

If no knock, repair the engine as needed. Without knowing exactly what you drive, you likely need upper intake and lower intake gaskets if it's a 3800.
 
How did I fix a hydro lock? I have very recently been doing all the work to my cars myself and never have ran into something like this
 


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