Thanks for the help on the spark plug issue. I hear something splashing near the floor by the tranny area, when i go from a dead stop. Then you don't hear it, when you are moving. I sometimes hear it when im in park & rev up the engine. I don't hear when im at idle. It's a 95 blazer w/ 4.3L vortec engine 4x4. I can't figure out what it is.

 

Have you checked your coolant level? If the radiator is low, you could be hearing the coolant splashing around in the heater core.

If it is low, it may take several fillups to top off the system as more and more air works its way back to the radiator.

Check the coolant level and let us know.

 

Yes you are right about the coolant & im going to fill it when im done here
thanks for the help swartlkk.

 

No problem!

Please let us know if that fixes your problem. Like I said, it may take a few fill up attempts to get all of the air out.

 

Check the level again when the engine is cold too.

 

it did work after there is pressure buit up. After it cool down i check it to see if it was still full & it was.

 

hmm, I wonder if there air was introduced into the heater core.

 

Maybe there is , if there is how would you get the out or will go away over time.

 

maybe i should drain it & then add new coolant