1998 Vaikyrie Spark Pugs and Air Filter

[Tom Turnbaugh]

I own a 1998 1500 Valkyrie. The service manual list NKG DPR7EA-9 plugs. Should I consider a different plug? Has 31,000 miles.

Also, is there an air filter in the bike under the gas tank or anywhere else?

Tom

[hubcapsc]

That's the plug I'd use... stick with the manual. Except for the part about your
manual missing the air filter page  ...

The filter is under the tank, supposed to change it (I'd use an OEM paper filter)
each 10,000 miles. There's like three hoses and the mechanism for the petcock
you'll have to deal with... This picture shows the gas line and the vent line and
there's a vacuum line from the petcock down to an intake. You'll have to take off the plastic
chrome handle part of the petcock...



-Mike

[ShiftHappens]

Air filter changes are easier when tank is getting low on fuel.

[Chrisj CMA]

Air filter changes are easier when tank is getting low on fuel.

It's the same amount of work no matter fuel level.  5 gallons of gas is not hard to manage.

[Jim in Idaho]

The NGK plugs are what you want   ...but consider going with the Iridiums.  They are top notch.  Good price here:

https://www.ebay.com/itm/6-pc-6-x-NGK-Iridium-IX-Plug-Spark-Plugs-7803-DPR7EIX-9-7803-DPR7EIX9-Tune-lt/301569418300?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

[Tfrank59]

Go to Shop Talk for the procedure to remove the gas tank.  when I remove mine I want it down close to reserve

[hubcapsc]

Go to Shop Talk for the procedure to remove the gas tank.  when I remove mine I want it down close to reserve

I like for the tank to be near empty too... and one of the shop talk articles mentions
something at I ran into: setting the tank on its nose (I did it to keep from setting it on
the petcock, it balances well on its nose) can set up a siphon effect that makes gas
shoot out the vent tube  ... I'm glad I did it outside... it was winter, it got cold enough
for the gas to sort of freeze up like a frozen water fountain... why does gas squirting through
the air freeze, but it doesn't freeze in our tanks?

-Mike