Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Carbon on spark plug

Discussion in 'The Garage' started by rafterman191, Oct 24, 2006.

  1. rafterman191

    rafterman191 Registered Member

    Joined:
    Aug 28, 2006
    Posts:
    54
    Likes Received:
    0
    Location:
    Indiana
    305 SB, getting carbon building up in #7 cylinder. Just did a head gasket job and when we pulled the heads, #7 was caked. Put about 1500 miles on it since then, checked the plugs while changing valve seals yesterday and plug in #7 was getting built up on again. I guess I will check it again in a week or so. Does this sound like a valve problem? I readjusted the valves after doing the valve seals, hoping it will improve.
     
  2. scooter122983

    scooter122983 1/2 ton status

    Joined:
    Oct 4, 2006
    Posts:
    297
    Likes Received:
    1
    Location:
    Fond du Lac, WI
    when you did the head gasket did you do the plugs, wires, distributor cap or do a compression test. If not check those possible problems they can all lead to a carbon buildup due to loss of compression or bad ignition. Check these when you do the valve seals.
     
  3. rafterman191

    rafterman191 Registered Member

    Joined:
    Aug 28, 2006
    Posts:
    54
    Likes Received:
    0
    Location:
    Indiana
    Scooter, thanks for replying. The plugs, cap, rotor, and wires were all changed when the heads were done. The guy I worked with said he did a compression check and they were good. That was actually my next step after I do all the valve seals (check the compression again). Got half of them done, hopefully I will get to the other half in the next day or two.
     

Share This Page