Starting help

[mjones75]

I have a 2000 Honda Civic LX with a 16DY7 engine. Has 275000 miles which has been re-ringed, new cam, timing belt, water pump gaskets , rebuilt in general. The other day I went to start it for the first time that day and it stumbled then no start. Cranks fine, had gas, new plugs, coil, dist, rotor. Checked the crankshaft position sensor and its within its range in ohms. Is getting gas, has spark and fuel pump is cycling, checked all of the connections I could get to as well as all the fuses and all is fine. Car is a five speed manual and has been running fine until now. Compression is fair but cant get an accurate reading since it won't start. Cranking it as is all cylinders at 50 or above compression. Any ideas that I haven't tried?

[DeltaP]

50 is low for compression. What are the comp readings of all cylinders? Should be 15-20% of each other. Try a wet compression test and get readings. I dont quite understand " Compression is fair but cant get an accurate reading since it won't start". Have you tried to spray it? Have you checked for spark at all cylinders, checked valve timing, whats fuel pressure? You asked for ideas you haven't tried yet, I hope this helps.

[mjones75]

All cylinders at wet test show 145 to 155 psi. Is getting spark at all cylinders, is in time and I have replaced the head gasket (I found nothing wrong with the old one). I have since replaced the complete distributor with a new one. Pulled each fuse inside the car under the drivers side of the dash one at a time and visually checked them as well as the fuses in the engine by. Checked all the relays in both fuse boxes with an ohm meter and they were within the proper ranges. Pulled the fuel relay and checked it, checked the fuel pressure which is at 43psi and checked the fuel pressure relay. Cylinder is getting fuel as the plugs do get wet. Pulled all of the plugs and laid them across the top of the cylinders and each spark and the cylinders do push fire. Even ran a ground directly to the heads and made no difference. Guess I need to break down and take it to someone.

[DeltaP]

From ALLDATA:
Fuel Pressure Test :

Special Tools Required
Fuel pressure gauge 07406-0040001
Fuel pressure gauge attachment 07VAJ-0040100
Relieve the fuel pressure.


Use a wrench to remove the fuel pulsation damper from its fitting, then attach the fuel pressure gauge attachment.


Attach the fuel pressure gauge.
Disconnect the vacuum hose (A) of the fuel pressure regulator and pinch it closed with a clamp (B).
Start the engine and let it idle.
If the engine starts, go to step 7.
If the engine does not start, go to step 6.
Check to see if the fuel pump is running: remove the fuel fill cap and listen to the fuel fill port while an assistant turns the ignition switch ON (II). You should hear the pump run for about 2 seconds when the ignition is turned ON (II).
If the pump runs, go to step 7.
If the pump does not run, test it.
Read the pressure gauge (with the fuel pressure regulator vacuum hose disconnected and clamped). The pressure should be: 320 - 370 kPa (3.3 - 3.8 kgf/sq.cm, 48 - 54 psi) .
If the pressure is OK and the engine is running, go to step 8. If the engine is not running, repair the cause, then continue this test.
If the pressure is out of spec, go to step 9.
With the engine running, reconnect the vacuum hose, and read the gauge again.
The pressure should be: 260 - 310 kPa (2.7 - 3.2 kgf/sq.cm, 38 - 46 psi) .

If the fuel pressure is OK, the test is complete. Go to step 10.
If the pressure is out of spec, go to step 9.
Disconnect the vacuum hose from the pressure regulator again while you watch the pressure gauge. The pressure should rise when you disconnect the hose.
If the pressure did not rise, replace the fuel pressure regulator, and recheck the fuel pressure.
If the pressure rose, and all your readings were within spec, go to step 10.
If the pressure rose, but your readings were out of spec, check for these problems:
If the pressure is too low, check for a clogged fuel filter and for leaks in the fuel lines.
If the pressure is too high, check for a pinched or clogged fuel return hose or line.
Reconnect the vacuum hose, remove the pressure gauge, and reinstall the fuel pulsation damper with a new washer.Tighten the fuel pulsation damper to 22 N.m (2.2 kgf.m, 16 lbf.ft) .
NOTE: Disassemble and clean the fuel pressure gauge attachment thoroughly after use.

[bowtieboy12]

bump

I know this thread is pretty old, but i'm having nearly identical problems and symptoms.

ever find a solution? i'd be interested to know how it was fixed.