fouled plugs

2000 MAZDA 626
139 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
RUDYROOLVINK
  • MEMBER
  • 3 POSTS
oil fouled plugs on a rebuilt head/all parts are new / comp is 185 all. ran fine for 35 miles then parked wont start / fouled all plugs oil puddles in cylndrs. ?new guides valves seals gaskets . no oil on top of plugs just bottoms wet ?
Aug 1, 2011 at 4:34 AM
Advertisement
Avatar
DANLESABRE
  • MEMBER
  • 230 POSTS
Any noises when it does not start? Does in crank at all?
Aug 1, 2011 at 5:23 AM
Avatar
RUDYROOLVINK
  • MEMBER
  • 3 POSTS
got it running , but its still fouling
Aug 1, 2011 at 5:33 PM
Avatar
DANLESABRE
  • MEMBER
  • 230 POSTS
Is the oil building up on the spark plug inside the combustion chamber, or on the other side where the spark plug wire boot attaches to it?
Aug 2, 2011 at 12:00 AM
Avatar
RUDYROOLVINK
  • MEMBER
  • 3 POSTS
oil is not comeing from from the porcelin top side / bottoms gap side / thinking machine shop /did bad job on valve stem seals ? im useing anti foulers now n its running butt rough .
Aug 2, 2011 at 3:59 PM
Avatar
DANLESABRE
  • MEMBER
  • 230 POSTS
Is it happening to all the cylinders or just some? If you do a compression test and all the cylinders have good compression then it sounds like a botched valve job from the machine shop. You may be right about that.
Aug 2, 2011 at 11:15 PM
Avatar
KHLOW2008
  • CAR REPAIR CONTRIBUTOR
  • 41,814 POSTS
I would say the machine shop did not do a good job with the valve seals.
Oct 2, 2011 at 11:16 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.