I just flushed the cooling system on my '89 Formula. Everything went great until I went to put the drain plug back in. It won't thread in. I know it ain't the plug because it will work in my camaro just fine, but my camaro's won't work in my birds either.

I guess I must have messed up whatever the plug threads into in the radiator. Has anyone had this problem? I'm going to pull the radiator out tomarrow and take it to a shop Monday to see what can be done.

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1989 Pontiac Firebird Formula W6S LO3 TBI 305.

1985 Camaro IROC-Z LB9.

 

ya, you can get a thread tap and re-thread the hole.

 

No I wouldn't have been able to do that. I fixed it today. The plug screws into a plastic clip that snaps into the radiator. I unscrewed it too far and the plastic clip fell into the bottom of the radiator. All I had to do was take out the radiator and turn it upside down to get the clip and reinstall it.

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1989 Pontiac Firebird Formula W6S LO3 TBI 305.

1985 Camaro IROC-Z LB9.

 

This is the "EXHAUST" forum. Moving this thread to General Engine.