Okay, so about two months ago, I flooded my Z by hitting a dip filled wih water that came up to about the headlights at about 40 MPH. It wouldn't start at first, but I took out the spark plugs, turned it over so the water inside would spew out, replaced the old spark plugs, and she started. Drove fine-ish, still does, but there is a misfire every once in a while in the lower RPMs for sure. Hard to tell in the higher RPMs. This effects my torque and my gas mileage (It's really bad).
There IS a hole in the exhaust, but it doesn't effect it much except that it's louder and I think it may have something to do with the torque (I think).
I need to know what the possible deficiencies could be, so I can get this problem is fixed.
I'm not very mechanically inclined, so please be vivid on your responses if you would.
Thanks in advance to whoever responds.

 

Are you throwing any codes? Sounds like it could be a bad coil pack, but I you would probably have a check engine light if that were the case.

 

Actually, yes. Forgot to post that. My check engine light is blinking.

 

Get it scanned and report your results.

 

It threw only the spark plugs.

 

Im not an expert, but I don't think there is a code that could tell you specifically that it is a spark plug and not a bad coil pack. Can you post your codes?

 

Yeah, it was a while ago...I don't have them. I'll get it scanned again and post the actual codes.

 

Do a compression check.

 

Okay. I'm guessing there's a guide on how to do that on here?

 

A bent rod or two will cause problems, you need to tear your motor down.

 

Yeah start with tearing the motor down, then if thats not the problem move on to smaller things. Not following this logic?

Also, he said the car runs better in the high rpms.

 

Most water locked motors bend rods , yes you can pull plugs , get the water out and fire it up, but it just a matter of time before the rods breaks. Typically it costs more to replace the motor with no core