Are sparkplugs in vx800m,long or short - Cars & Trucks

Could be a short in the coil for the sparkplug. Check the magneto- pull the plug wire off the spark plug and hold it close to the frame of the while someone tries to start it. Keep all parts of your body clear of the mower- only hold the sparkplug wire. When the motor turns over, verify spark from the wire to the frame. If no spark, you likely have a bad magneto coil. If you have a good spark, try taking the air filter off and use some engine starter fluid (not much) and then try and start again. If it starts and runs for a second with the starter fluid, you probably have a problem with your fuel not getting in, which leads to troubleshooting the carb and intake.

This would mean the #3 cylinder and the #6 cylinder are misfiring. There are several potential reasons including bad coil-paks or sparkplug wiring, coils on plugs(new style), crankshaft sensors, or shorting fuel injectors.

Some problems may be visually seen if the engine compartment is open in a dark place and sparks jump. Or the sparkplugs on the cylinders mentioned could be bad.

Had same problem with my 98 c2500 350cu in. Found distributor cap shorted. Take number three sparkplug wire off of sparkplug, let hang and try starting. Mine started, which let to bad cap discovery.

There were a number of problems with V=8 engines in this Series. Some of the sparkplugs would try to leave the engine on their own. You need more testing to know what is wrong.

I will try to explain. The trouble Codes generated by your Onboard computer can be too general to identify a specific part for some problems.

There are 3 causes for a misfire. Fuel, spark, and compression. You can have fuel injectors which are dirty or have bad connections or coils and fail to open consistently. Spark issues are more complicated to diagnose as coils are now attached to individual sparkplugs(some models) and are triggered by Crankshaft and Camshaft sensors. A bad coil-pack feeding each bank of sparkplugs can short out adjacent plugs like #3 and #4.

Compression problems between #3 and #4 cylinders from a bad head gasket can cause misfires.

You can get a loaner test kit for the fuel injectors or use a test light or multi-tester. This will eliminate or confirm the fuel injector circuit as the problem.

There are cylinder balance tests that are non invasive when done with a good scanner. Otherwise removing the sparkplugs will be required to do a compression test.

Sparkplugs leaving the engine: They either unscrew or rip out the sparkplug hole. Loose plugs will misfire. BUT there is a problem with removing sparkplugs on these Series of motors. The factory plugs are 2 pieces welded together. Carbon buildup causes the sparkplugs to come apart as they are removed. Use solvent every 1/4 turn, let set for first 2 twists.

There was a Recall on these motors, but a Mileage limit and a time limit of about 7 Years was imposed. Check Internet for articles about all of these subjects, photos, etc.

Please rate my info.

P0300 means misfire ,random, more than one cyclinder.You will need to access the ignition coil and sparkplug and inspect coil boot for a short to ground. start out with a full tune up shnage sparkplugs

you can buy v long magnetic pickups,or long flexible grab claw,you push in knob at one end,and a claw comes out at other end.very useful.Tip car upside down,leave it there,or can you take off panels underneath,to get access?

You have the 3.2L 6cyl ? The wire connector at each coil that is positioned above the sparkplug is a bit tricky to remove. Start with an easy to get at one-like one on engine front passenger side. There is a clip you have to push in to release the connector-it will slide out. Then remove two screws holding coil to valve cover and pull it up-it will have a long boot on it. Use a sparkplug socket and long extension to remove sparkplug. Tip: driver's side sparkplug located nearest to firewall of car is a bit tricky to get out because of steering/master brake cyl-use two short extensions-when sparkplug is unscrewed from engine-lift it up a bit-remove one extension-then lift plug out.

They are underneath the coil that each cylinder has-you'll see 6 "coils"-three to side-on top of each valve cover. Remove the wire connector from the coil-remove two screws holding each coil to valve cover-carefully pull coil up away from valve cover. If it is stuck-slightly rotate coil back and forth to break it's hold on the spark plug. Use sparkplug socket and long extension to reach sparkplug down inside of valve cover. Driver's side of engine you will find one sparkplug difficult to get because of interference from brake system components. Use TWO short extensions coupled together to reach plug-when it becomes unscrewed from cyl head-lift it up-pull off one extension to clear obstruction-then pull the plug out from valve cover. (I bet you'll see some oil inside the hole where sparkplug was-(sparkplug may be wet with oil-there are seals that keep oil from leaking out of vavle cover). I DID NOT bother to replace the seals-my Rodeo is running just fine with 317,000 miles on her.

You can purchase a sparkplug wrench at AutoZone $8 ...

It has a "T" handle and a 5/8 inch socket on a "universal joint".

or ... use a 3/8 inch ratchet and a short extension and a 5/8 inch deep socket ..... go with the AutoZone wrench.

Ask the AutoZone clerk for a 1 foot piece of rubber hose (seriously) so that you can grip the sparkplug with it and not mess-up the sparkplug hole threads on the motor. The clerk will explain.

Hope thsi helps!

try changing the crank position sensor -jeff please rate