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You can perform an ohms test but the test is not always conclusive. First check your points, dwell and timing. Make sure your coil is getting a good 12+ volts. Try jumping a positive jumper wire from the battery positive to test. A bad shift interuptor switch can cause a no-spark condition as can a bad tach or shorted harness. Read more at sterndrives.com
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How do you test the ignition coil on an '86 Toyota pickup 22re?
get a volt meter. turn it on. put one end on the +. the other end on the -. if you get a number greater than 12 with the car running then your golden.
Your fuel pump is not working and have fire going into the coil but not out to the plug wires and you just did a engine swap?
test for power to fuel pump. sounds like you need a new coil as well
How do you test ignition coil on 2005 trailblazer ls 4100?
let the engine running, lift off the ignition coil one by one after opening the screw...a tick sounds will be heard ... no tick sound and gasoline leak on the plug thread means the ignition coil is busted.
Can you view wiring diagram of ignition system F 150 1987?
Hope This Help.TESTING Ignition Coil TestThe ignition coil must be diagnosed separately from the rest of the ignition system.Primary resistance is measured between the two primary (low voltage) coil terminals, with the coil connector disconnected and the ignition switch off. Primary resistance should be 0.3-1.0 ohms.On Dura Spark ignitions, the secondary resistance is measured between the BATT and high voltage (secondary) terminals of the ignition coil with the ignition OFF , and the wiring from the coil disconnected. Secondary resistance must be 8,000-11,500 ohms.If resistance tests are okay, but the coil is still suspected, test the coil on a coil tester by following the test equipment manufacturer's instructions for a standard coil. If the reading differs from the original test, check for a defective wiring harness.Ignition Coil Primary Circuit SwitchingInsert a small straight pin in the wire which runs from the coil negative (-) terminal to the TFI module, about 1 in. (25mm) from the module.WARNINGThe pin must not touch ground!Connect a 12 VDC test lamp between the straight pin and an engine ground.Crank the engine, noting the operation of the test lamp. If the test lamp flashes, proceed to the next test. If the test lamp lights but does not flash, proceed to the Wiring Harness test. If the test lamp does not light at all, proceed to the Primary Circuit Continuity test.Ignition Coil ResistanceRefer to the General Testing for an explanation of the resistance tests. Replace the ignition coil if the resistance is out of the specification range.Ignition Coil Secondary VoltageDisconnect the secondary (high voltage) coil wire from the distributor cap and install a spark tester between the coil wire and ground.Crank the engine. A good, strong spark should be noted at the spark tester. If spark is noted, but the engine will not start, check the spark plugs, spark plug wiring, and fuel system. If there is no spark at the tester: Check the ignition coil secondary wire resistance; it should be no more than 5,000 ohms per foot. Inspect the ignition coil for damage and/or carbon tracking. With the distributor cap removed, verify that the distributor shaft turns with the engine; if it does not, repair the engine as required. If the fault was not found proceed to the Ignition Coil Primary Voltage test.Ignition Coil Primary VoltageAttach the negative lead of a voltmeter to the distributor base.Turn the ignition switch ON and connect the positive voltmeter lead to the negative (-) ignition coil terminal. Note the voltage reading and turn the ignition OFF . If the voltmeter reading is less than 90 percent of the available battery voltage, inspect the wiring between the ignition module and the negative (-) coil terminal, then proceed to the Ignition Coil Supply Voltage test.Ignition Coil Supply VoltageAttach the negative lead of a voltmeter to the distributor base.Turn the ignition switch ON and connect the positive voltmeter lead to the positive (+) ignition coil terminal. Note the voltage reading then turn the ignition OFF . If the voltage reading is at least 90 percent of the battery voltage, yet the engine will still not run; first, check the ignition coil connector and terminals for corrosion, dirt, and/or damage; second, replace the ignition switch if the connectors and terminal are okay.Connect any remaining wiring.REMOVAL & INSTALLATION Carbureted EnginesDisconnect the battery ground.Disconnect the two small and one large wires from the coil.Disconnect the condenser connector from the coil, if equipped.Unbolt and remove the coil.Installation is the reverse of removal.Fuel Injected EnginesSee Figures 1, 2, 3 and 4Fig. Fig. 1: Disengage the high tension wire by pulling on the connector boot-fuel injected enginesFig. Fig. 2: Separate the wiring harness connection at the coilFig. Fig. 3: Unscrew the coil from its bracket mountFig. Fig. 4: Remove the coil from the enginePulling on the connector boot, disconnect the high tension lead at the coil.Disconnect the wiring at the ignition coil.Remove the ignition coil-to-bracket attaching screws, then remove the coil.To install:Install the coil, tightening the screws to 25-35 inch lbs. (2.8-4.0 Nm).Connect the ignition coil wiring harness and the high tension lead.
How do you test ignition coil on a snowmobile?
you cant you can test it with an ohm meter if it reads 000 theres no resistance and its bad if it reads an open its bad you want around a couple hundred ohms
Where is the resistor for the coil on a mercruiser 470?
The Cable is the Resistor ! Its a Resistor-Cable ! Greets from the Lake of Constance/Germany !
How do you change coil on 170 mercruiser motor serail B435880?
By following the steps in the repair manual would be the very best way.
In the purple wire connected to the positive or negative post on a mercruiser coil?
In a MerCruiser ignition system, the purple wire is typically connected to the positive post of the coil. This wire carries the voltage from the ignition switch to the coil, enabling it to generate a spark for the engine. It's important to ensure proper connections and functionality, as a faulty wire can lead to ignition problems. Always refer to the specific wiring diagram for your engine model for accurate information.
You have the coil would a test show if you were pregnant?
Yes, the coil does not affect a pregnancy test.
What is the cylinder compression for a 502 mercruiser engine?
Just did compression test on mine and the normal seems to be 160 -180
How do you test a ignition coil with circuit diagram?
You cannot test it with a diagram. You will need a multimeter to test the coil. Click the link.
How do you test an electronic coil?
there is nothing to test a coil is just a peice of metal rapped in circles
How do you test ignition coil on your Alero 1999?
1999 Alero how do i test ignition coil pack
How do you test a 91 Chevy beretta dis coil?
Take off the modual and coil pack take it to autozone they will test it free.
Is a mercruiser the same as a Chevy engine?
Mercruiser buys engines from many suppliers, including Chevrolet.
How do you test the coil in 1995 mercury mystique 2.0 l?
HOW DO YOU TEST THE COIL PACK ON A 1995 MERCURY MYSTIQUE DOHC 6 CYL.
What is the correct ignition timing for a mercruiser 3.0 engine?
The correct timing for a Mercruiser 3.0L 140 engine is 6 degrees BTDC. for a Mercruiser 120 the correct timing is 8 degree BTDC.
