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  • avatar zaken1 04/15/12 4:22 pm PST

    Check for spark at the plug wires while the starter cranks. If there is no spark, replace the crankshaft position sensor.

    If there is spark at the plugs; buy a "noid light" from an auto parts store, and connect this tool to the wires for the fuel injectors. If the light does not flash while the motor cranks; replace the camshaft position sensor.

    You can also test the camshaft position sensor by spraying starting fluid in the throttle body air inlet, and seeing if that makes the engine fire briefly when cranked. If starting fluid helps the starting; replace the camshaft position sensor.

    If neither of the above tests helps; run a compression test on the motor. If the compression in all cylinders is less than 130 psi; the timing chain has broken or jumped out of position.

Answers

  • zaken1 04/15/12 4:22 pm PST

    Check for spark at the plug wires while the starter cranks. If there is no spark, replace the crankshaft position sensor.

    If there is spark at the plugs; buy a "noid light" from an auto parts store, and connect this tool to the wires for the fuel injectors. If the light does not flash while the motor cranks; replace the camshaft position sensor.

    You can also test the camshaft position sensor by spraying starting fluid in the throttle body air inlet, and seeing if that makes the engine fire briefly when cranked. If starting fluid helps the starting; replace the camshaft position sensor.

    If neither of the above tests helps; run a compression test on the motor. If the compression in all cylinders is less than 130 psi; the timing chain has broken or jumped out of position.

  • juble111 04/15/12 7:19 pm PST

    the problem with that is the plugs are inside the coil pack bolts to top of motor and the plugs are inside with just boots that got to plug to coil so how else could i test compression or spark

  • zaken1 04/15/12 8:20 pm PST

    From the coil you described; your car has the 2.2 liter 4 cylinder engine. This engine does not have a camshaft position sensor listed for it; so it probably only has a crankshaft position sensor.

    You can test for spark by removing the mounting bolts for the coil pack, and plugging the coils and boots into 4 spare spark plugs. Lay the coil pack on its side; so that the threaded part of the plugs rests on the valve cover. In this position; you should be able to see if there are sparks jumping between the plug electrodes when the engine cranks.

    Testing the compression is no different on this engine than on any other: Remove the spark plugs and insert a screw in type compression gauge in the first cylinder's plug threads. Unplug the wiring harness connector from the coil pack. Crank the engine and read the gauge after it has gone through 4 compression strokes. Then move the gauge to the next cylinders and repeat the process.

  • juble111 04/15/12 8:42 pm PST

    ok i will try it tomorrow and see what happens thanks so much you have been very helpful im a girl so i just never seen one like this lol so thanks so much

  • zaken1 04/15/12 8:55 pm PST

    A lot of men have never seen these one piece coil packs, either. Thay were only used on SAABs and on some GM products.

  • juble111 04/18/12 10:40 pm PST

    checked more on the car today and it is getting fire and so we sprayed starting fluid in the manifold and the car started . We are getting 55 lbs of fuel pressure at the engine so we are thinking that it might be a injector but would one injector shut the whole car down going to do a noid test on it tomorrow any more ideas? thanks.

    Source: 

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