How to replace a PCV valve on my 1997 dodge neon? I travel over 60 miles a day and when at stop lights i have a light rough idle. Just replaced the plugs and wires 15k miles ago and the air filter 500 miles ago. I do my oil changes every 3,000 miles and use fuel injector cleaner every oil change. It seems to help the light rough idle for a couple of weeks but than back to the norm. I was told and have read that replacing the PCV valve could or would sieze the idle problem.

Once you have the new PCV valve locate the old one on your engine. It will sit on the middle of one of your valve covers (most likely passenger side) and will have a line that connects to the top of the valve. Simply pull the old one out and put the new one in snapping that line on the new one. Should only take about a minute to do. Hope this helps, let me know if it does.

Your best bet is to replace your pcv valve which should be located on the valve cover somewhere with a vacum line attached to it you should probably trace te vacum line back and replace the vacum line with a new piece. and i would use a lucas additive to your oil when you change your oil or marvel mystery oil one of the two hope this helps

On the valve cover of you engine where your oil stopper and spark plug wires are there should be a hose running in to a plast pipe like object that is on the right hand corner

Pcv should be on valve cover with a hose attached to it.you may have a vacuum leak .you can also try a engine oil additive like risoline,lucas,z-max