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Omc cobra engine cranks but will not start, have replaced all main ignition parts

I have replaced all the main tune up parts such as points plugs wires cap and rotor but the engine will crank but still no spark. it is a 1988 four wins with a 5.0L omc cobra with points ignition. would the esa module cause it to not spark and is there a way to check it.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 3 Answers

SOURCE: engine cranks ,but no spark.

ain t many more parts to electrical system left... i had same problem once n it was my ignition modulator.located under distributer.**** i can t remember,i think my car would not turn overfrom that.or only other thing could be a fuse.i 'd check every fuse too .hope this might help.

Posted on Mar 12, 2009

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  • 5537 Answers

SOURCE: ignition point gap and spark plug gap inboard outboard omc

.019 for the points and .035 for the plugs

Posted on Jul 10, 2009

longbow243
  • 103 Answers

SOURCE: 2000 Silverado-4.3 ltre-cranks over-wont start-consistenly

Yes. First, in the fuse block under the hood check INJ A fuse and INJ B fuse. INJ A fuse is circuit 1039 which feeds the coil. If the fuse is OK, replace the coil electrical connector. I stock 2 of these at my dealership because they are needed quite often.
FYI P1351 is an ignition coil control circuit DTC.

Posted on Sep 01, 2009

jturcotte
  • 8520 Answers

SOURCE: my honda oddessey 1995, my

Hi, since you've replaced everything else, about the only thing left is the crankshaft position sensor. This is the sensor the computer uses to time the spark signals. Because this sensor is expensive, I recommend you test it first to verify it's bad before replacing. I have pasted test procedures below as well as replacement procedure in case it fails the tests. You will need an ohmmeter for the test. If you don't have an ohmmeter, you can buy one for as little as $10, or maybe you can borrow one. You will also need a timing light if you replace the sensor. Please let me know if you have questions, and thanks for using FixYa.


TESTING CRV and 1995 Odyssey Models

  1. With the ignition switch OFF , detach the electrical connector on the side of the distributor housing.
  2. Measure the resistance between the following two CKP wires:

    CRV models: The blue and white wires. The resistance should be 300-700 ohms. 1995 Odyssey models: The blue/green and blue/yellow wires. The resistance should be 700-1,300 ohms.
  3. If the resistance is not in the specified range, replace the distributor ignition housing.


REMOVAL & INSTALLATION CRV and 1995 Odyssey Models

  1. Remove the negative battery cable.
  2. Remove the distributor cap leaving the wires attached and place aside.
  3. Disconnect the electrical connectors at the side of the distributor housing.
  4. Make a matchmark reference mark between the distributor housing and the cylinder head and remove the distributor housing assembly.

To install:
  1. Transfer the components not supplied with the replacement distributor housing assembly.
  2. Install the distributor housing assembly in the reverse order of removal.

jturcotte_1430.gif

Fig. Fig. 2: The Crankshaft Position (CKP) Sensor rotor looks like a small gear in the lower distributor housing- CRV and 1995 Odyssey models



7. Check and reset the ignition timing as outlined below.

ADJUSTMENT CRV and 4-Cylinder Odyssey Models



If equipped with an automatic transaxle, place the shifter in Park or Neutral. If equipped with a manual transaxle place the shifter in Neutral. Make sure to apply the parking brake and block the drive wheels.


  1. With the heater off and in the full cold position, start the engine and hold the engine speed at 3000 rpm, until the radiator fan comes on at least one time. To check the ignition timing, the engine must be at idle speed and at normal operating temperature. Make sure all electrical consumers (defroster, radio, air conditioning, lights, etc.,) are turned OFF.
  2. Locate the blue plastic Service Check (SCS) Connector, as follows:

    Odyssey models with 4-cylinder engines: centrally located on the passenger side, under the dash. The connector has two wires; one is brown with a black tracer, and the other wire is red.

See Figures 1 and 2

jturcotte_393.jpg

Fig. Fig. 1: The inductive lead of the timing light is placed around the No. 1 spark plug wire; and the light is aimed toward the marks on the crankshaft pulley.


jturcotte_1431.gif

Fig. Fig. 2: The red ignition timing mark on the crankshaft pulley is lined up with the pointer. The two small notches on either side of the red colored notch represent the plus (+) or minus (-) 2° increments. The white notch to the far right is Top Dead Center (TDC)

  1. Connect the SCS service connector tool number 07PAZ-0010100 or equivalent to the service connector. A paper clip can be substituted for the tool by forming a "U" shaped bend in the paper clip and carefully inserting it into the back side of the SCS service connector terminals. The purpose of the tool is simply to connect the two wires together temporarily.
  2. Connect a timing light to No. 1 ignition wire and point the light toward the pointer on the timing belt cover.
  3. Check the idle speed and adjust if necessary.
  4. The red mark on the crankshaft pulley should be aligned with the pointer on the timing belt cover.
The white mark on the crank pulley is Top Dead Center (TDC).
  1. Adjust the ignition timing by loosening the distributor mounting bolts and rotating the distributor housing to adjust the timing. Set as follows:
    2.2L/2.3L Odyssey 2.2L models: 13-17° at 650-750 rpm
  2. Tighten the distributor bolts to 17 ft. lbs. (24 Nm) and recheck the timing.
  3. Remove the SCS service connector or the substituted paper clip from the SCS service plug.

Posted on Apr 03, 2011

philwalker78
  • 608 Answers

SOURCE: gp 800 will crank but wont start

Hi, most likely the trigger coils near the flywheel, it will still have spark but the timing may be off. Try new plugs first as they may have spark outside the cylinders but not when under compression. Regards Phil

Posted on Jul 05, 2012

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