• Become a Subscribing Member today!

    PiperForum.com is a vibrant community of Piper owners and pilots with over 1,500+ active members.

    Access to PiperForum.com is subscription based. Subscriptions are only $49.99/year or $6.99/month to gain access to this great community and unmatched library of Piper knowledge.

    Why become a Subscribing Member?

    • Swap technical knowledge, plan meetups and sell planes/parts.
    • We host technical knowledge of general aviation topics and specific topics on J3-Cubs, Cherokees, Comanches, Pacers and more.
    • In addition to an instant community of pilots for you, PiperForum.com is a library of technical topics, airplane builds, images, technical manuals, technical documents and more.

    Become a Subscribing Member and access PiperForum.com in full!

    Subscribe Now

Rough Running; Max 1800 RPM PA28-140

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Galaxy

Junior Member
Joined
Apr 20, 2010
Messages
31
Reaction score
0
So I have a new problem that I am not liking too much. I went out to take the plane around the patch (haven't been out there in about 6 months) and when I went to do my run-up, I got MAYBE 1800 RPM from the engine max and it runs rough as hell. It does this on both mags, so I didn't think it was a fouling issue, but I went ahead and removed and cleaned/reinstalled the plugs to no avail. I have heard some people mention that I could just have a bad plug and they should be changed anyway (they are pretty old, but "in good condition" as of the annual last year). So, should I bother replacing all the plugs (will probably do that anyway) or are the odds that I am looking at something else? I have also heard that a sticking valve could be to blame. I have about 800hrs on the engine and last compression numbers we all 76/80 or better. So...what say you guys?
 

Latest posts

Back
Top