Question about 2005 Gilera Runner VX 125

1 Answer

What gap should i set my new spark plug before i

I have a 2002 gilera vx125 4 stroke. What gap should i set my new spark plug before i fit it?
Thanks. Colo.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

The plug gap should aleady be set from manufaturer, but incase you think its been dropped or something, the gap should be at 1.1mm

Posted on Jun 30, 2009

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Spark plug gap for 503 Rotex

Hi Faye,

I found this,

Rotax spark plug advisory for ultralight, experimental lightsport, amateur built aircraft.

Rotax 2 stroke aircraft engine spark plugsThe recommended spark plugs for the Rotax 277, Rotax 377, Rotax 447, Rotax 503, Rotax 532, Rotax 582 are the NGK B8ES series or the NGK BR8ES ( the R in the spark plug denotes it is a resistor plug and should be used in all of the CDI ignition engines.

BUT the Bosch points ignition engines should NOT use both a resistor plug and a resistor spark plug cap - use one or the other.

The least expensive option in the long run is the cap as you purchase it once while the resistor plugs cost more than the standard plug each time you buy them.

Ad Code TwoHere

Use spark plugs that have a SOLID TIP - DO NOT USE spark plugs that have an aluminum screw on tip. They vibrate loose, the tip wears making a loose cap to plug fit, and can lead to the spark plug arcking across from the cap to the plug. Also the screw on style spark plugs are NOT designed for our applications, the gap is generally set up for .030 to .035 thou. The solid tip spark plugs are set up for a gap of .015 to .020 thou.

Spark plug gap

  • Allowable range: 0.4-0.5mm / .015 -.020"

  • Optimal: I usually set them to .015 and let them wear out to .019

  • This also helps getting the engine started in colder conditions

This was found at

Oct 10, 2014 | Cars & Trucks


Fowel out spark plug in a 2 stroke dirt bike or four wheeler

if your ever in the mountian on your 2 stroke dirt bike or atv and you fowel a spark plug and you dont have an extra one just remove the plug and on the end of the plug that screws down in you motor and where you set the gap is glass brake the glass and the plug will be like new just remember to buy a new plug before the next time you ride because now the spark plug is shooting striaght fire that will eventually burn up your piston

on Mar 09, 2010 | Motorcycles

1 Answer

Mazda spark plug gap and torque

No it is not critical, you can use torque wrench to fit spark plugs. Different spark plugs require different amount of torque.

Jun 10, 2013 | Cars & Trucks

2 Answers

Gilera purejet starts revs doesnt really drive

Your carb jets may need a good clean ,also check your air filter it may need changing along with new spark plugs .

Mar 22, 2010 | 2002 Ducati 998 R

1 Answer

Piston rings

First, be sure they actually do fit the bore. Take a ring and insert it in the bore. push the ring halfway into the bore using the piston. There should be about a 1/32" gap in the ring. Anything more than 1/16" and you need rings the next size up. If the ring won't go into the cylinder because the gap fully closes, the rings need to be a smaller size.

With the correct size rings, put them on the piston. Some pistons have an index pin in the ring groove Fit the gap to the pin. Put the piston mid-stroke and place the cylinder over the top of the piston. Squeeze the rings closed as you gently tap the cylinder downward and over the rings.

Please rate this solution. Thanks garethholleb!

Apr 04, 2009 | Gilera Runner VX 125 Motorcycles

2 Answers

Spark plug gap keeps closing on 2 stroke engine

it could be the spark plugs are to long and the piston is hitting the glug

Mar 21, 2009 | Ryobi Garden

2 Answers

Week spark on honda 5.5hp gx160


I suppose is 4 stroke engine.Before adjusting the breaker points gap at .020 check if the breaker points are burned.Also check the condenser(change it).Change the spark plug with a new one with the same heat range.The plug gap is .030.

best regards savumihai71

Feb 12, 2009 | Electrical Supplies

1 Answer

Air filters

if you remove the air box and fit a sports filter the engine will run lean and do damage and will prob run much worse with a higher fuel consumption, unless you know how to read spark plugs to set the mixture I wouldnt do it.....

Jan 25, 2009 | 2005 Gilera Runner VX 125

1 Answer

Plug gaps

Manufacturer Spark Plug Gap A spark plug part number might fit hundreds of engines and although the factory will typically set a gap to a pre-selected setting this gap may not be optimum for your particular engine and may not take into account modifications that you may have made to the engine. Spark Plug Gap – Bigger is Better The larger the spark kernel that is generated by a spark jumping the electrode gap, the more likely and complete the fuel burn will be, and the smoother the engine will run. That is, the larger the spark gap that’s exposed to the air/fuel mixture, the easier it is to initiate combustion. This translates directly into improved throttle response. So, the larger the plug gap you can run (without misfires) the better. Unfortunately, the greater the plug gap, the higher the voltage requirement to jump the gap. The difficulty lies in that, any added gap creates more strain on the other ignition parts. Coils, for example, may not have enough stored energy to cross the gap, creating a misfire. Old plug wire insulation can break down at the higher voltages required to fire a larger gap. The stock Ducati coils are good enough to fire a 0.044-inch plug gap. Any gap larger than this will likely result in more misfires (there’s always a few) and subsequent power loss. The correct new plug gap is specified at about 0.024-inch (0.6mm). But, remember, as a plug wears, the gap opens up further. If you use conventional sparkplugs, start with the recommended gap and try opening the gap up in 0.002-inch increments. You should note a progressively smoother throttle response if not more power. When the bike begins to lose power, go back 0.001 - 0.002 inch and this will be your optimum gap. I don't know offhand what the DCPR8E plug comes pre-gapped at but as a good rule-of-thumb, if you go more than 0.008 inch over the out-of-the-box gap you won’t maintain parallel surfaces between ground and the center electrodes. So if you reach that point, change to a plug that starts at a larger gap. The NGK dash 9 series starts at a 0.9mm (0.035-inch) gap, and is used for that reason. If you run iridium or platinum electrode plugs, start with the 0.035-inch gap that they are shipped with. Don't run them at smaller gaps or you'll loose throttle response. If you have a older bike, you may arc over the plug wires before you can reach the optimum plug gap. If the spark plug wires have inadequate insulation, the wire cannot maintain a high enough voltage across the insulation and will arc to ground before firing the plug gap. The factory spark plug leads are stranded wire covered with an EPDM jacket and although the wire itself will last a long time, the jacket will start to break down after a couple of years which is why most good aftermarket wire is insulated with silicone rubber. If this is the case, replace the stock spark plug wires with a set of Magnecor or similar quality wires. This will allow running a larger plug gap without a concern for insulating the higher voltage needed to jump the gap. Ducati 916 Magnecor #2549 wires, for example, run $67. Ignition Amplifiers Running a larger gap is the main benefit of installing an ignition amplifier, such as the one sold by Evoluzione for Ducati's. The Evoluzione ignition amplifier increases the primary voltage to the stock Ducati coil from the existing battery voltage to either 16 volt or 18 volt (user selectable). A higher primary voltage means you get a higher secondary voltage applied to the wires and plugs. The higher the secondary voltage - the larger gap it will jump across. Evoluzione recommends that for best throttle response, you run a 0.060 inch plug gap. One reservation that I have about ignition amplifiers as a group is that they could possibly cause overheating and eventual failure of the stock coils or wires. This reliability consideration has to be balanced against improved performance. An independent test by Road Racing World magazine on a GSXR 1000 saw only about a 0.2 HP improvement, but throttle response is the major benefit.,,,

Nov 10, 2008 | 2002 Gilera Supersport 600

Not finding what you are looking for?
2005 Gilera Runner VX 125 Logo

338 people viewed this question

Ask a Question

Usually answered in minutes!

Top Gilera Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4514 Answers


Level 3 Expert

75797 Answers

Fabrice Wolters

Level 2 Expert

163 Answers

Are you a Gilera Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides