1998 Mazda 626 Engine Bogging Down

Tiny
NYYANKFAN
  • MEMBER
  • 1998 MAZDA 626
  • 6 CYL
  • FWD
  • MANUAL
  • 70,000 MILES
I noticed recently that when starting out in each gear and accelerating the engine bogs and stutters untill it reaches a higher RPM. I have replaced the fuel filter and it started to run better but is back even worse. I just started pulling spark plug wires and noticed the number one wire covered in oil and oil halfway up the plug.
Tuesday, August 25th, 2009 AT 6:47 PM

3 Replies

Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
The oil on the spark plug wire may cause a errant spark to occur. The oil is probably coming from a leaking valve cover gasket. Did you pull the plugs out and look at them? If so, did you check the plug gap? How about the air filter? A dirty air filter can cause your condition also.
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Wednesday, August 26th, 2009 AT 1:20 AM
Tiny
NYYANKFAN
  • MEMBER
  • 2 POSTS
After cleaning the plug wire and plug off and then re-inserting them the engine seemed to run much better.
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Wednesday, August 26th, 2009 AT 6:54 AM
Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
The oil will probably leak on the wire again. Keep an eye on it, and/or try to find and repair the leak.
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Wednesday, August 26th, 2009 AT 9:35 AM

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