Air filter oil

GUTS · Oct 24, 2014

I just put a new K&N filter on and I sprayed it with K&N filter oil. I took it for a ride and now it won't run well at WOT. It runs fine at partial throttle at all RPM's but not when you roll it on all the way. Did I just get too much oil in the filter element? I just took the carbs apart and put new gasket in but I didn't change anything else. It ran really good before.

ashman · Oct 24, 2014

I had run a K&N filter for over 30 years and never had that problem unless you soaked the filter in a tub of oil, maybe you upset something when you replaced the gaskets, float or float needle or something???

Ashley

Bob Z. · Oct 24, 2014

What is your main jet size?

If you have the original Amals with chokes, try closing the choke a bit when going wide open and see what happens.

Hobot · Oct 24, 2014

May be oil fumes over richening as well as choking full air flow. Nothing for it being a Commando user but scrape some knuckles again, wash it out and see. I've over oiled my share of kn type elements but didn't run bad I could tell so engine sucktion must of over come the excess > so you might of just bumped something carb related loose while fiddling filter. You did apply a proper thin grade of oil of course.

Deets55 · Oct 25, 2014

Put the old filter back in without touching the carbs. That should point you in the right direction without dissembling the carbs again.

GUTS · Oct 25, 2014

I finally had a chance to take the carbs off and check out the problem. Turns out I didn't notice one of the needles had come loose from it's clip when I put the carbs back on and it was down in the jets. I put a new clip on and put her back together and now it runs beautifully.

Nater_Potater · Oct 25, 2014

Always glad to hear of a confirmed fix. Happy ending!

Hobot · Oct 25, 2014

Na nana na Na told ya. Its one of Commando lesions - spiffing up one thing and buttoning up as the start of next hunt and fix task.

texasSlick · Oct 26, 2014

GUTS said:
I finally had a chance to take the carbs off and check out the problem. Turns out I didn't notice one of the needles had come loose from it's clip when I put the carbs back on and it was down in the jets. I put a new clip on and put her back together and now it runs beautifully.

I hope the old clip was still on the needle! If not, where it went is not a nice thought!

Slick

Triton Thrasher · Oct 26, 2014

texasSlick said:
I hope the old clip was still on the needle! If not, where it went is not a nice thought!

Slick

I've never seen one get down past the throttle slide.

Air filter oil

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