ucmbt@yahoo.ca wrote:
>Car: 95 Civic LX
>Problem: Engine cranks, but will not start
>What has been done so far:
>
>1) Replaced spark plugs - and tested that there are sparks while
>cranking (by attaching a spark plug to a spark plug wire, and grounding
>the plug on the valve cover - tried this for all 4 plugs and wires)-
>i.e. ignition wires and distributor cap/rotor (brand new) are good.
>Also, checked resistance of all ignition wires - all are way below
>25,000 ohms
>
>2) Check Engine light goes out after 2 seconds when the key is in the
>"ON" position and I can hear the fuel pump prime during those 2 seconds
>- so, fuel pump and main relay should be good
>
>3) Can smell gas while cranking - fuel is delivered to the engine
>without problems. Also, after removing a spark plug, I can see the
>spark plug is soaked with gasoline - so there IS fuel in the engine -
>so, fuel pump and main relay should be good
>
>4) Since the engine cranks, then the starter should be good
>
>5) Battery is fully charged using an external charger - so there's
>plenty of juice
>
>6) Based on the above, ECU should be good - since the check engine
>light goes out after 2 seconds when the key is in the "ON" position.
>I've also tried an ECU that's known to be working properly - still the
>engine won't start.
>
>7) Timing belt is definitely not broken - I saw the valves move up and
>down while peeking in the oil filler hole. Also, the distributor rotor
>rotates while cranking.
>
>8) Dry compression test results:
>cylinder #1 has 100psi of compression
>cylinder #2 has 100psi of compression
>cylinder #3 has 130psi of compression
>cylinder #4 has 80psi of compression
>
>9) Wet compression test results (after putting a few drops of oil in
>each combustion chamber):
>cylinder #1 has 150psi of compression
>cylinder #2 has 150psi of compression
>cylinder #3 has 140psi of compression
>cylinder #4 has 130psi of compression
>
>10) Tried spraying starting fluid into the air intake/throttle body.
>The engine didn't cough at all.
>
>11) If I take out all the spark plugs and dry them out over night
>(they are soaked with gas), and then put them in, I can hear the engine
>cough once, then it's back to crank, crank, crank and the spark plugs
>will be soaked with fuel again. It seems like the spark plugs are not
>able to ignite the fuel, or maybe there's too much fuel?
>
>12) About 3 months ago, car was running fine on the highway, then the
>engine stopped completely. Engine would NOT restart. Had to tow it.
>Since then, the car has sat on a flat garage floor for 3 months. Gas
>tank is 1/2 full.
>
>Please help! Any other things to check/test? What do you think the
>problem is?
>
>Could it be the ignitor, even though there's spark on the spark plugs?
>Could it be the sparks are not strong enough? How to test whether the
>spark is strong enough? The sparks can jump a 1/2" gap between the
>spark plug and group.
>
>Please let me know. Thanks in advance for your help!
do you have spark did you try to hold gas pedal to fllor maybe engine is
flood #4 cyc is low compression also