Question about Honda Gx390 Motor Inside Cover

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No spark on a honda gx390 motor

When you pull the motor over and it will not fire up and i cleaned the coil and put it back on and gapped it and still no spark

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: spark plug gap

it is 0.036 in

Posted on Nov 10, 2008

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SOURCE: 2004 Honda Accord spark plug gap

.044 Happy New Year!

Posted on Jan 02, 2009

  • 3 Answers

SOURCE: My 95 Honda Accord won't start. There's No spark from the coil

Take the distributor cap off and have someone crank the engine. Is the rotor button in the distributor turning? If not, you lost a timing belt. I went through your same senario.

Posted on Mar 09, 2009

  • 6 Answers

SOURCE: honda cbr 600 wont start

hi, each lead has the specific number on it. if you do this correctly then they genrally give you an idea to where the sit in the coils( the way they bend :-) ) also i believe the coils are better off been attached to the frame once you are sure leads are in corect order and possitioned correctly in the coils.i just presumed the coils neaded earthing. make sure battery is pleny charged as a bad battery can just hinder. it is also very easy to flood the bike so just check the plugs again. if they are unusually wet then dry them off and try again . otherwise maybe try cleaning all electics.

hope this somehow helped
gavin barraclough

Posted on Apr 26, 2009

ollie reece
  • 1167 Answers

SOURCE: what is the gap for a cr250 honda spark plug

it is 32.0 buddy

Posted on Sep 19, 2009

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1 Answer

Want start. Getting fuel. No fire at spark plug


These engines have a low oil sensor and if the oil is low, the engine will not have fire. So check the oil level first and make sure it is to the full mark.

Check the spark plug that it still has proper gap .028-.031 in and the proper spark plug BPR6ES (NGK) or W20EPR-U (ND). While you have the spark plug out let's see that it is firing, reattach the plug wire to the spark plug and make sure the spark plug is in contact of a bare metal surface for a ground, the crank the engine over watching for spark in the gap of the spark plug. It would be best to check this in a low light area. Keep in mind that checking for spark this way and there is spark but when the spark plug is installed and there is compression the spark may not jump the gap as it should. If no spark with the plug out check the spark plug wire for cuts or tears and it none seen get a new spark plug. If there is spark with the spark plug out reinstall the spark plug. If the engine hasn't been started for some time drain the gas out of the fuel tank and carburetor. There could be water in the fuel also but to check if there is fire get a can of starting fluid. Drain the carburetor anyway at this point because if there is water in the fuel the next step may not fire the engine because of the water. Take the air filter out and give the opening of the carburetor a short spray of starting fluid. Try to start the engine, if it doesn't start or fire with the starting fluid there is something wrong in the ignition system. The Digital CDI Ignition Coil could be bad but before buying a new one you need to check the shear key of the flywheel to the crankshaft to make sure it is in good shape. You will need to remove the flywheel for this. If the key is in very good shape, then it is the coil.

If the engine fires on the starting fluid then you have water in the fuel or the fuel is not getting into the engine as it should from the carburetor. The carburetor needs to be cleaned.

Feb 27, 2015 | 13 HP Electric Start GX390

1 Answer

How to fix a flooded engine.


Remove the spark plug and pull the starter rope several times to clean the cylinder, clean the spark plug and fit it back, try to restart the engine.

Aug 13, 2014 | Honda Gx390 Gx 390 13.0 Used Small Engine...

1 Answer

I put a coil on and didn't leave air gap between coil and flywheel now it won't fire would this ruin the coil


No, you just need to put a gap of .025 between the coil and flywheel and everything should be fine, if the engine won't turn at all, it's not the coil that's the problem

Oct 19, 2013 | Honda Gx390 Motor Inside Cover

1 Answer

What will happen if you don't have air gap between coil and flywheel on a small engine


The "Air Gap" is adjusted to create an electromagnetic "charge" between the magnets of the flywheel and the coil of the ignition system. Without the correct clearance it will not produce the spark necessary to fire the spark plug. When the magnets pass closely to the coil, to make it simpler, it produces this "charge" which is then amplified by the coil that can produce as much as 25-50,000 volts
I don't want to make this sound like rocket science, but the fact is if the coil touches the magnets it will wear out the coil and the magnets and not create the right spark. Too much clearance and it will not produce a spark. I first started working with small engines in the early-to-mid 60s and discovered that by taking a sheet of note-book paper and folding it into about three layers thick, placing it between the magnet and coil loosening the coil so that the magnet would pull the coil to make contact and tightening the coil in place. The clearance would then be satisfactory to make a good spark.
It would then be a simple matter to turn the flywheel to rotate the paper out from between the flywheel and coil.

Oct 19, 2013 | 13 HP Electric Start GX390

1 Answer

My 13.0 honda gx390 motor has no spark and will not start


try disconnecting the black wire which runs across under the fuel tank you should have spark.

Nov 15, 2011 | Simpson Taskmaster Industrial Gas Powered...

1 Answer

Bike not starting at all. sometimes it starts after continous kicks but no use .agian the same problem.


I would suggest that you cleanyour carburetors.
To tell if they need cleaned, spray carb clean in the back of the carb and the kick it over, if it starts right up, then you need to clean your carbs., Drain your gas tank and install a new fuel filter, and put new gas in the tank too.

If it doesn't start right up on the carb cleaner, then check to see if you are getting spark.
If you have spark, then test your compression.
Compression should be at least 125-145 psi but not less than 100 psi to run.

If you don't have spark, pull power wire off coil and see if you have power to the coil.
If you do have power then your coil is bad.
if you don't have power, make sure your on/off switch is working. check wires

As long as you have good compression, good fuel and good spark, that motor will start.

Pull out the plugs and see if they are dry, or wet or , black and sooty.
If dry - no fuel
if wet - no fire or misfire
if black and sooty - clean & check gap or replace with new ones.

Nov 30, 2010 | 2006 Hero Honda Passion Plus

3 Answers

Honda 5.5 hp air comp. no spark wont run


Most honda engines have an oil sensor that prevents the engine from starting if the oil level is low or oil is dirty. Test coil by disconnecting oil sensor wire. With sensor disconnected coil should fire. If still no fire, check kill wire for short. If still no spark, coil may need to be replaced. enjoy

Nov 28, 2008 | Honda Quincy 17 - Gallon Air Compressor...

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