Ngk Recent Questions, Troubleshooting Help & Support

.039 http://www.iboats.com/Yamaha-NGK-Spark-Plugs/dm/view_id.669906

window motor might need to be replaced or the power connection might have come loose and needs to reconnected. Also the fuse might be blown, but I doubt that as the other windows must work.

Hello, do you have an 8 cylinder engine? if so, count from the right side of engine while you are facing from the front. Spark plug wires going to plug, it's #1, #2, #3, #4 then look to the left of you and count #5, #6, '#7' and the next one would be #8.

You will have to replace the wire. Pull old one off remove spark plug pry the metal end of the wire off the spark plug. Replace spark plug install new wire. there is anti stick for spark plug wiring I would use if I was you

Yes I believe you do have to remove the inlet manifold.

check your owners manuel

8 is hotter

You have to remove the intake manifold to gain access to them. It's not much fun, and you have to be very careful not to damage anything delicate. They usually last 100,000 miles so early service is usually not done.

could be crank position sensor

looking at the engine bay it looks like you need to fit iriduim plugs on the back row they last longer

Plug Gap.054 Torque 28 lbs dry.

The Manual says .044inch, Some plug makers advise not to change there preset gap. Most plug charts recommend the gap for most makes and models.

0.40

most cars have a gap of 26 thousand of an inch if you make it wider it makes the timing later by a thousand of a millisecond for each plug that is wrong

4 cyl. 4 plugs 6 cyl 6 plugs

With a spark plug gap gauge similar to this.

The plug gap is .044"

The plug gap is 0.45mm or .018"

Get a socket set, find the spark plug tool, remove like a nut. Done