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The Year 1998 Toyota Corolla engine will stall due to:
Spark plug faulty
High-tension cord faulty
• Ignition coil
Incorrect ignition timing
• PCV line
• EGR line
• Intake manifold
• Brake booster line
Incorrect valve clearance
EFI system problems
You probably have one plug not firing. First, check all your plug wires to make sure the boot is pushed on all the way. If there is no improvement, you can pull one plug wire off at a time (with the engine running). If the engine doesn't die, or change when you pull a plug wire off, that will be your bad plug. It should change drastically when you pull a wire. Be sure to use a spark plug wire puller, or a heavy rubber glove. Check for spark in all your wires with a timing light.
If there aren't any dead plugs or wires, the next thing to check is the timing. Aim a timing light at the timing mark on the crank. If the mark jumps around a lot, the timing belt or chain has jumped, and will need to be replaced.
If that checks out okay, the next thing to do is a compression test. You may have bad valve.
Disconnect the spark plug wires by pulling them upward firmly. Use a spark plug socket (5/8 in.) to loosen the spark plugs down in the tube. Pull them out with needle nose plier or a magnet if necessary. When replacing take care not to cross-thread.
The enigne can only start if it has correct Air/gas mixture and spark. Let check the following to have a logical analysis:
1-First you can check if it has Fuel by after cranking, Take out spark # 1 ( the one closest to the fan) to see if it wet or dry to confirm you have fuel or not.
2- When the spark is oout and still in the contact with the spark plug wire, have a helper to crank up the engine, you are to look at the spark plug gap to see any arcing to confirm of having sparks or not.
3- For sanity check, pull out the air filter to see how filthyor clean it is.
When you check all of that you will know what the problem is. You can post what you find then when I'll check to help you. Good luck.
pull the 4 plugs out on the top of the engine and get an extinsion and spark plug remover from an automotive shop all it takes is to pull it out and replace it with a new spark plug very easy and it might take 10 min. to do