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1996 Nissan bluebird: misfiring once engine warms up & oil leek around engine onto driveway.

Mechanic replaced valve cover, spark plugs & cleaned engine. Drove home good - next day still misfiring! 1 month later, I see leeked oil around engine again plus dripping on driveway. It starts fine, idles fine, & no overheating, but the misfiring is definitely once it warms up. Thanks for your time, Liz.

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  • 16 Answers

Take a look under the hood in the dark .You will see if it shorting out by the blue flashes I think oil leaking is the problem Also the oil breathing dystem may be blocked.

Posted on May 24, 2019

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Molson02536
  • 3854 Answers

SOURCE: Check engine light

A multi misfire may mean that one or more of the following has happened:
Faulty spark plug or wires, Faulty coil (pack), Faulty oxygen sensor(s), Faulty fuel injector(s), Stuck/blocked EGR valve / passages, Faulty camshaft position sensor, Defective computer.

The engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wire, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the the problems were faulty fuel injectors. 

Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

Good luck and hope this information helps, keep me posted, be glad to help you get the truck running 100% again. Not sure if your running a K&N air filter, and if you are there may be a flim of oil on the MAF sensor that is making you run lean. You may want to spray down the MAF sensor with a can of MAF cleaner. 

Posted on Jul 02, 2009

  • 1 Answer

SOURCE: Misfire

One question, have you replaced the ECTS (Electronic Cooling Temperature Sensor)? These cause no end of different seemingly unrelated problems on Saturns. Peice is about ten bucks and is an easy install. Just search on youtube for a how-to video. Even if that's not the problem it is reccommended to replace this peice just the same as they ALL end up going bad at some point.

If that's not a fix, start pulling plugs. Check to see if they're correctly gapped and if they have any damage/corrosion. If you're running Platinum plugs, immediatly change to a copper plug as Platinums have no place in these motors. Most people have the best luck with NGK copper.

Check to make sure that your plug wires haven't been crossed. This sounds like a plug or wire issue most likely so it has to be in that family, if the plugs are good, wires good and not crossed, sensors are fine, then time to replace your coil packs. If you've replaced everything up to the coil packs then that is most likely the cause of your dillema.


Posted on Oct 25, 2008

  • 217 Answers

SOURCE: 1998 Cavalier No Spark in cylinders 1 & 4

ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.

Posted on Jan 17, 2009

MNfisherman
  • 11896 Answers

SOURCE: Car starts, then doesn't, then does, then doesn't

check the fuel pump relay! It sounds like it is one of your relays. If it was an electrical or sensor problem, the check engine light would be on.

Posted on May 22, 2009

  • 14092 Answers

SOURCE: 2001 Galant ES-V6 DTC is P0304 - Cylinder #4 misfire

look for weak valve springs.

Posted on Jun 22, 2009

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