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New onan 18 hp engine installed in a 318 jd no spark repaced cap,

My new engine bg43 has no spark this engine is brand new I replaced the cap and coil from old engine thinking this may be the problem still no spark any suggestions ?I have checked the points where do i go from here?

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5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 850 Answers

SOURCE: Is there a way to test the ignition condensor on

not worthtesting just replace it if its suspect as they are only cheap to buy & easy to fit

Posted on Jul 25, 2009

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SOURCE: I have an onan 18 hp twin cylinder (early 90's

Hunting & surging usually is the carb. main fuel jet is dirty, restricted fuel passage, or the governor. Try running some Seafoam carb cleaner through the gas tank first and see if it helps, and don't use ethanol-blended fuel. It absorbs moisture.

Posted on Sep 09, 2009

nova2nv
  • 197 Answers

SOURCE: john deere 318 wiring diagram I replaced an bg 316

Purple wire goes to the solenoid on starter.If you installed starter with single wire post all you have to do is mount a solenoid to the frame just in front of starter,existing batt/starter cable goes to one solenoid post,purchase a short red cable and install on other solenoid post and run it to the starter,plug purple wire into new solenoid and the way you go.

Posted on Nov 16, 2009

Testimonial: "This was great advise bought a solenoid and away i go thx"

Biggdex35
  • 333 Answers

SOURCE: I have a JD 1020.

Doe's it run? Is it in time? If it runs and is in time. did you set the dwell? You have to have a dwell meter to set it. Unless you can guess. Adjust the screw on the points while it is running and see if it runs better. After you set it you have to set timming again. Or vise versa?

Posted on Oct 02, 2010

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I have a 1999 Tahoe 8 cylinder I put in a new coil a whole new distributor distributor cap still it will not start


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follow this steps and fix it. God bless you


Carburetor

If the lawn mower engine stops after a few seconds, the carburetor might be clogged or have bad fuel in the float bowl. If old fuel was left in the lawn mower for a long time some of the volatile ingredients may have evaporated, leaving a thicker, stickier product that is more like varnish or shellac. This sticky fuel can clog up the small jets and ports in the carburetor and it can be difficult to burn allowing the engine to only run for a few seconds. The only solution is to drain the old fuel from the float bowl and thoroughly clean the carburetor with carburetor cleaner. If that isn't effective, replace the entire carburetor.


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Carburetor Kit

If the engine stops after a few seconds it may not be getting enough fuel. The engine needs air, fuel and spark to maintain operation. The carburetor has two inputs, fuel from the gas tank and air through the air filter. The carburetor is designed to mix the air and fuel in a consistent ratio so that the engine can run continuously. If the carburetor is not getting enough air or fuel, or if the fuel is blocked inside the carburetor the engine stops after a few seconds. Rebuild the carburetor with this carburetor kit.





Gas Cap

If the lawn mower engine stops after a few seconds and then stops running, the gas cap might be defective. All gas caps have a small vent to allow air back into the tank when the engine is running - otherwise as gas is drawn from the tank it would create a vacuum. The vent can be difficult to see and there are many different types of vent. If loosening the gas cap a little allows the engine to stay running, replace the gas cap. It's sometimes possible to clean the vent, but on most newer engines the vent cannot be cleaned, it should be replaced.





Gas Cap with Gauge

If the lawn mower engine stops after a few seconds and then stops running, the gas cap with gauge might be defective. All gas caps have a small vent to allow air back into the tank when the engine is running - otherwise as gas is drawn from the tank it would create a vacuum. The vent can be difficult to see and there are many different types of vent. If loosening the gas cap a little allows the engine to stay running, replace the gas cap. It's sometimes possible to clean the vent, but on most newer engines the vent cannot be cleaned, it has to be replaced.





Old or Bad Gasoline

If the lawn mower stops after a few seconds, the carburetor might be clogged or have old or bad fuel in the float bowl. If old fuel was left in the lawn mower for a long time some of the volatile ingredients may have evaporated, leaving a thicker, stickier product that is more like varnish or shellac. This old or bad fuel can clog up the small jets and ports in the carburetor and it can be difficult to burn allowing the engine to only run for a few seconds. The only solution is to drain the old or bad fuel from the float bowl and thoroughly clean the carburetor with carburetor cleaner. If that isn't effective, replace the entire carburetor.


Spark Plug

If the lawn mower engine stops after a few seconds the spark plug might be defective. All small engines have an ignition coil. The coil is the device that provides spark for the spark plug(s). If the coil is bad there won't be spark to the plug(s). The coil is essentially a small, induction generator. It is mounted next to the flywheel. The flywheel has one or more strong, embedded magnets. As the flywheel spins, the magnet(s) zip past the induction coil, this action of a magnet passing past a coil induces a voltage. Depending on the design of the coil and the strength of the magnets, a stronger or weaker spark can be created and delivered to the spark plug(s). Each time the flywheel spins around a spark is generated. The best way to test a spark plug is to use a spark plug tester. The spark plug should have a strong, visible spark between the electrodes when the engine is cranking. If it doesn't, replace it.

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1 Answer

Hi i have a Suzuki sj 413 and its got su carb and brand new coil but there's no spark at all and its been rewired by the haynes diagram but still no sparks it turn on the starter motor but nothing


old post. , its not stock, and you failed to state the year.?
sure
no spark these old cars have a 100% dedicated Distrib.
there is no EFI , early years.
the is a coil of that has no spark then the Dizzy VR and inside ignitor is bad.
if the spark is dead at 4 spark plugs or very weak and ok at the coil that means the timing on the CAM or the Dizzy or both is way off.
caused by rotor sparking between cap tower positions.
http://www.fixkick.com/

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1 Answer

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1 Answer

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