Question about Chevrolet Lumina

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After i replaced my crankshaft oil seal..misfire comes..i already replace the high tension wire, hose resonator but i didnt replace the spark plugs yet what do you think sir?...hope you can help me...thanks in advance

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Replacing the seal should not have caused a misfire problem. Pull the plugs and take a look at them to determine if they need replaced. At least while they are out you can clean and check gap.

Posted on Oct 13, 2010

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02 Toyota Tacoma when engine warms up cylinder 3 has a misfire po303


check spark plug of the cyl. switch plug with another cyl, run engine until warm to see if misfire still comes on. if it stays on the same cyl. fault could be high tension wire or coil or worse leaky valve or rings. if misfire switched to the other cyl just change plug or better replace all plugs

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Oil leaking into cylinder


"leaking into the top of the second cylinder on top of the spark plug wire
only this matter !! cure that.

some engines have spark well. are you saying the wells fill with oil?
if yes, you didnt buy a real valve cover sit, try FELPRO that
comes with the well seals , with kit.
skipping is misfire. if the boots get fill of oil, sure it will misfire, how can it not?

Apr 10, 2013 | 2008 Suzuki Forenza

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92 civic engine stalled while driving; fuel pump works; replaced all plugs seeing some oil on old ones. only one plug fires; is coil still working? or the distributor? haven't checked fuel...


Hi,
Check the ignition distributor cap and clean the electric contact points it might be already dirty.

if one has a spark that means your ignition coil is still okay. Remove the whole cap and check the inside part and clean it, use emery board.
Check also the high tension wires( spark plug wires ).
Hope Fixya helps you!

Aug 28, 2011 | 1992 Honda Civic

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Have oil leaking into one spark plug hole will valve cover gasket and spark plug seals fix this? this is a 2000 four cyl honda.


Yes. The valve covers have seals that seal around the spark plug tubes where the plug wires go down through the valve cover. A valve cover set should come with the spark plug tube seals. This is a common problem with Honda. I also recommend replacing the plug wires because the rubber boot can get saturated with oil and cause a misfire. Sometimes it may look like the boot is clean when you wipe it off, but the oil is still in the pores and can cause the boot to allow the spark to arc over to the spark plug tube. Most of the time the ceramic on the plugs gets messed up also. This can also cause a misfire. If the plugs have any brown or black discoloration that does not easily wipe off with a rag, then I also recommend replacing the plugs. The discoloration is caused by carbon. Carbon is highly electrically conductive. This will allow the spark to travel down the side of the ceramic to the metal base of the spark plug.

Jan 15, 2011 | 2000 Honda Accord

1 Answer

My 1999 Subaru Impreza sport wagon had a misfire in cylinder 2, after I changed all four spark plugs and fuel filter the problem got worse. Now the throttle lags and misfires only happen when the car...


Check the firing order tu might have installed it differently, clean the Hi-TENSiON wire terminals on the distributor cap and to spark plugs, oxidation makes contacts to these points might have attributed to the problem! The oil must have leaked from the o-ring seals around the TUBE where u put the spark plugs! It also makes the spark plugs misfires! Replacing these o-ring seals, u have to pull down the valve cover, u will see the rubber around the tube, pull it off and replace w/ new one, clean the area first and put a little silicone sealant! Put everything back! Thats it! Taaah!

Nov 12, 2010 | Subaru Impreza Cars & Trucks

1 Answer

Got oil on one of my spark plugs and it has no power. But it don't smoke?


Replace the valve cover gasket, and make sure that it comes with the spark plug tube seals. probably replace the plugs if they need it, and the plug wires should be replaced if they've gotten very much oil on them since the oil degrades their ability to insulate, and the plugs will start arcing up the sides and engine will start misfiring.

Check the seals around the inside of the spark plug chambers, where the valve cover meets, could be seaping in from there

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2 Answers

#2 cyl. misfire


replace crank sensor and if that isnt it replace #2 fuel injector

Jun 27, 2009 | 2001 Ford Windstar

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