Question about 1998 Oldsmobile 88

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Check engine code po301. replaced coil packs started up once ran rough and wont start again. White smoke coming out of exhaust while cranking. THis is on a 1998 olds 88, 3800 engine.

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I would suspect an intake gasket for this engine because they are known for these to go out, I have seen very few head gaskets go on a 3800 engine.

Posted on Oct 06, 2012

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White smoke ! sounds like head gasket leaking,will also set a misfire code

Posted on Oct 06, 2010

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HEAD GASKET GONE

Posted on Oct 06, 2010

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1 Answer

My 97 honda accord is blowing white smoke and running rough then i went to start it now it wont start


Sounds like either a blown motor (rings need replaced) or a bad head gasket or cracked head.
If the rings are bad your car would have felt like it was losing power because the engine will no longer have the same high compression that it's required to turn the wheels. You may have heard your engine knocking or seen a light blue colored smoke coming from your exhaust as a result of your engine burning up oil in the combustion chamber from the rings leaking.
If your head gasket is leaking or your head is cracked you'd likely find milky looking oil when you drain your oil from water/antifreeze being mixed in and noticed a white smoke coming from your exhaust that is actually water vapor coming through the exhaust.
If your car was running rough when you last shut it off try pulling all of your spark plugs and either cleaning them or replacing them all. A bad head gasket or bad rings can both foul spark plugs. A car will run rough with 1 or 2 fouled plugs, but once enough foul it will no longer run at all just sit and crank over. If changing the plugs get's it started for ya, check your tailpipe first for water, if nothing, change your oil. If no signs of water/antifreeze or milky colored oil then it's probably rings.

Aug 27, 2012 | 1997 Honda Accord

1 Answer

1999VWnewbeetle 40,ooomiles hard to start.CODE PO301,PO302,PO303


Hi there:A P0301, P0302 and P0303 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #1, #2 and #3.
Symptoms may include:
the engine may be harder to startthe engine may stumble / stumble, and/or hesitateother symptoms may also be present
A "misfire code" may mean that one or more of the following has happened:Faulty spark plug or wireFaulty coil (pack)Faulty oxygen sensor(s)Faulty fuel injectorBurned exhaust valveFaulty catalytic converter(s)Running out of fuelPoor compressionDefective computer
Possible Solutions:If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as 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 wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
Hope this helps.

Mar 04, 2012 | 1999 Volkswagen Beetle

1 Answer

Engine Misfiring. Rough Idling. Losing power going up hills. Engine light flickered one day. I brought it to dealer. They said cyl 5 had a fouled spark plug. They replaced it, retuned and cleared code....


It sounds like it could be a bad coil pack that is used for number 5 cylinder. It could also be a bad spark plug wire. Does the weather seem to make a difference? Try this quick check once night time comes around. Open the hood and start the engine. Fill a bug sprayer with salt water and spray the plug wire while the engine is running. If the wire is bad, you might notice an electrical arc from the wire to the engine block. The engine will probably start running rough. If this occurs, then the wire should be replaced. If it doesn't, then the coil pack can be tested with an ohm meter. I hope this information has been helpful to you. Good luck with your problem and thank you for using Fixya.com.

May 30, 2011 | 2008 Chevrolet Silverado 1500 2WD

1 Answer

P1320 code appeared and we replaced the cam position sensor. It ran OK, but started rough until warm and next code showed #1 cylinder misfire. Replaced #1 coil and it ran great. Then later the engine light...


i just had the same problem in my bmw 325i. Probably vaccum leak or exhaust leak. Check that nothing came loose in these areas. It takes time for your car to learn the new CPS (cam pos. sensor) so give it a few days and reset the code again and see if it works.

Mar 12, 2010 | 2000 Nissan Maxima

1 Answer

2006 Dodge Quadcab 1500, 4.7L. Ok I have changed the spark plugs & coils, oil, oil filter, and air filter....my check engine light is still coming on. Ran diagnostic at store, PO300 coming up (said...


Random misfires are some of the trickiest problems to solve, usually an ignition system problem a bad or weak coil pack or possibly a spark plug wire. If not the ignition system then surely a clogged injector.

Sep 03, 2009 | 1996 Dodge Grand Caravan

1 Answer

91 LEGACY STARTED RUNNING ROUGH


The cylinders are numbered as on the spark pack you changed. You might have done better putting the seafoam in the tank as an injector cleaner. Not sure why you changed so many parts, you seem to know how to get the codes from test connector lead hookup and the blink pattern. You might also want to check the fuel rail pressure and the crank and cam angle sensors. Before replacing the injector, swap the #4 injector with the adjacent one and see it the code moves with the injector or stays put. If the code stays on #4, then check the injector wiring, if it moves clean or replace the injector.

Mar 16, 2009 | 1991 Subaru Legacy

2 Answers

No heat, rough idle then pop and smoke from coil pack 2001 caravan 3.3


YOu should be able to tell if coolant leaks caused the coil pack to fail. I believe it is 2 issues.

Oct 29, 2017 | 2002 Dodge Caravan

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