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It is a 2002 corolla. Lb2 reading suggests emission problems. Have replaced spark plugs. Think it is an issue with fuel system. Suggestions please

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  • Cars & Trucks Master
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You have something broken in the engine like a valve spring or camshaft. This is not a fuel system problem, period.

Posted on Nov 07, 2012


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Posted on Jan 02, 2017

  • 97 Answers

SOURCE: Car getting too much fuel at spark plugs

Hello Velma!

It sounds like ther might be an intermittent ignition (spark) problem... when the plugs don't fire, they will get wet with fuel...
So check all of the ignition components, make sure there are no loose connections to the coils are plug wires.

It is also possible that there might be a problem in the fuel injection, such as an injector stuck open and continuously feeding fuel to its cylinder (which would show as only ONE plug being wet), or possibly a bad fuel pressure regulator, letting fuel pressure in the injector rail go too high and causing an over-rich mixture and engine flooding (symptomatic of ALL plugs being wet).

Once the engine is "flooded" it is sometimes hard to "clear" the engine with modern injection systems, but try this: Hold the accelerator to steadily to the floor while cranking --- DO NOT PUMP THE PEDAL! --- This will allow the maximum amount of air to mix with the overage of fuel in the cylinders and help the engine to eliminate the excess without also adding too much back in...

If you still can't get it to fire off doing the above, then remove the fuel pump relay or fuse and repeat the above until the engine tries to run.... It will run briefly until it fuel starves and dies. Then replace whichever you removed and try starting again with fuel delivery back in service.

Velma, I would have answered this sooner, but I've been on a "road trip" and only recently got back home. If you still have problems, please post a comment describing as best you can the situation --- you have to be my eye, ears, nose, and hands in this long distance effort! Also let me know why the head gasket blew, if known... Racing or overheating? If this does help, please remember to rate my assistance --- your approval is my ONLY compensation for providing this help!


Posted on Jul 12, 2008

  • 2 Answers

SOURCE: 2002 mitsubishi galant

Has it overheated lately?
My wife overheated our Galant and it just stopped working, it cranks but that's it.
I pulled the sparkplugs and found them wrapped in a gewey jelly like substance. Like an oil/antifreeze combo.
I am going to replace the entire motor for $1000 as taking it to the mechanics to theorize and practice may cost more.

Posted on Dec 14, 2008

  • 63 Answers

SOURCE: sputtering on accelerations

If no check engine light is on, I would try to replace the coil pack first. Usually on these cars a drop in fuel pressure associated with a bad fuel pump should throw a code.

Posted on Jul 10, 2009

  • 25 Answers

SOURCE: I have a 2002 Dodge Dakota. 3.9 liter V6. I have

It sounds like timing issues or the spark plug sequence is incorrect. To check the timing, remove the number one spark plug. Place a long screwdriver into the spark plug hole. Rotate the engine by using a ratchet and socket on the crankshaft pully nut (clockwise) and watch the screwdriver. When the timing marks in the crankshaft pully are aligned with "O" or "TDC" (top dead center) the screwdriver should be all the way out of the hole, just inside about 1 or 2 inches. If you rotate the crankshaft just a bit the screwdriver will start to go down, back the pully up to the 0 or TDC mark and the screwdriver will go back up. The is the properly timed engine.
Sometimes the engine will skip a couple of teeth due to a worn timing belt. Replace the timing belt and re-time the engine. Good luck, Jim

Posted on Aug 28, 2009

  • 234 Answers

SOURCE: 1993 toyota corolla, problem no spark to spark

Check the ignition relay and all the main relays on the battery.

Posted on Jan 06, 2010

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Chech engine light code OMDII 300 vehicle back fires from stand still till speed 35 to 40 mhp 1998 corolla can you help

OBD II 300 Random/Multiple Cylinder Misfire Detected

When the misfire monitor detects a misfire, it will trigger the check engine light with the specific cylinder number as the last digit in the P030X code. For instance cylinder 1 misfire is P0301, cylinder 2 is P0302 etc. In this case we have either multiple cylinders misfiring, or the computer simply can't determine the specific cylinder, and as such we are left with the P0300 in computer memory.

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Fuel injectors, related wiring, sensors and computer issues
Running out of gas, or poor fuel quality
Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
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EGR system concerns: leaking EGR valve or restricted ports
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Mar 24, 2009 | 1998 Toyota Corolla

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1994 toyota corolla has a runs rough at idle and lacked power, would stall sometimes at stop. Also has low idle,try timming and new plugs, and checked distriburtor cap and fuel filter and fuel regulator

I have a similar problem with one of my Toyota Corollas. It's a 95 model with the 1.8L engine (7A-FE, automatic). But unlike yours, it has plenty of power while running. Here's what it does. Occasionally the engine misses. Sometimes it will die. This is most likely to happen when you start the car and put it in reverse and start rolling without giving the engine time to adjust. I've been told by some customers that it will die sometimes when coming to a stop. But this has never happened when I drive it. I don't think it's a fuel issue because the car runs just fine when it's running.

Here's what I've tried so far:

  1. Replaced spark plugs and wires.
  2. Used gasoline additive fuel injector cleaner.
  3. Checked air filter.
  4. Checked vacuum hoses for leaks.
  5. Replaced PCV valve and hoses.
  6. Cleaned the air intake and throttle body with carburetor cleaner.
So far there is no change in the problem.

What I plan to do next:
  1. Check the throttle position sensor.
  2. Check the MAF sensor.
  3. Adjust the idle via the set screw.

After that I have no idea what to do next if the problem persists. The check engine light is not on so I don't think there are any error codes. Will let you know.

Frank's Friendly Cars Maui Car Rental

Feb 26, 2009 | 1995 Toyota Corolla

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