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Harley Davidson Misfiring Problems

The arching can be reproduced with a spray bottle filled with soapy water. You can troubleshoot the issue in your garage and find a solution to the problem without visiting a repair.


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If the OP wants to be rid of the issue swapping out that speed density injection system and replacing it with an alpha-N will cure his problem.

Harley davidson misfiring problems. 78 cold and 38 hot is what it should have. The flashing and rough running is to to a misfire or misfires cause by arcing due to moisture on ignition components. Usually if your bike is at high speed the engine will jerk and spit making some unpleasant vibration.

If your Harley Davidsons spark plugs get worn out it forces the ignition coils to perform at very high output. Spark is individually sent to each cylinder in a timed manner. But i have drained the tank and installed fresh gas from a different location.

Harley Davidson No Spark Troubleshooting Resolving the no-spark issue of your Harley Davidson motorcycle To get started with this you need to remove a spark plug and re-attach the plug wire. Generally the engine misfiring is a condition that signifies the malfunctioning of the ignition coil. I can roll the throttle and it runs like a champ.

But the problem is still there. And if you drive the Vrod the way they suggest you wont get much of that lean misfire. I have a 03 Duece.

Even its most progressive brand adherents have challenges with that. For combustion air fuel and ignition or ignitor fire-spark. The misfire or sputter occurs at random.

You need to ensure that the plugs metal base is grounded by the insulator. Your new Harley Sportster have plenty of power and you will obviously expect it to be easy to ride in all situations without annoying problems. Dont rule out simple things like spark plug conditiongap and spark plug wire condition.

Ad Shop Harley Motorcycle Gear At Great Prices. Ad Shop Harley Motorcycle Gear At Great Prices. Full throttle full load for a second or two at most.

Start by identifying which cylinders isare misfiring. The problem is misfiring at constant speeds. Your Harley can have an issue with the battery and voltage regulator which isnt a big deal.

Quick Order Processing Shipping. And even its most progressive and rational adherents will. Some times on downshifting from 3-2 then rolling on the throttle.

You also wont have much fun either. Air and fuel are delivered simultaneously from one source equally to both cylinders. But the times i notice it the most is in 6th gear at 74mph at 2800rpm it fells like bad gas or like it looses the crank signal for a second.

Backfiring on a Harley Davidson is often related to an electrical issue. Pro Harley owners prefer to fix their bikes themselves which saves a lot of money while increasing their mechanical skills as well. Ok Im new here.

Unfortunately the very lean airfuel mixture on the stock bike takes some of the joy out of the riding because like all other modern fuel injected bikes the Sportster suffers from misfire weak idle poor low speed running and an unpleasant snatchy throttle action. Suggest starting off with a full charging system test. How to Avoid Harley Davidson Bad Ignition Coil Problems 1.

Keep the spark plugs in good condition. At first I thought I had gotten some bad gas so I drained the tank and filled it with fresh gas. Try the crank pisition sensor that is vary likely to be the couse of your misfires its working but its intermintly shorting out telling the pcm that you have a misfire and setting the codes Nov 22 2010 2004 Volkswagen Passat.

Quick Order Processing Shipping. I have change the plugs with the OEM from HD and installed new plug wires OEM. Its not new for a Harley Davidson bike to experience electrical problems.

The problem is in the ignition system. I have tried new plugs and tried different plug wires off of a friends Duece. One carb feeds two cylinders.

Im a Harley Tech and have not seen this problem once so far in our dealership the expansion of the parts when at running temperature is considerable i can assure you that chain is to tight and will eventually damage parts in the drivetrain ie compensator trans mainshaft bearings not to mention the very early wear of the tensioner shoe. Harley-Davidson has a racism problem. Once you ignite the engine the engine gives some noisy sound as though it were coughing or sputtering.

Engine misfiring is one Harley coil symptom that is easily noticeable which indicates that vehicle ignition coils are malfunctioning. One cylinder not firing will NEVER be the carburetors problem. Eventually these misfires can lead to other problems such as damage catalytic converter.


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