Oil pump failure FX 350???

Cary Kellum
Profile picture for user Cary Kellum
Posts
33
Joined
5/13/2020
Location
Valley Center, CA US
Cary Kellum
Edited Date/Time 3/3/2022 5:26pm
Have any of you experienced Oil pump failure, and seized top ends, on Ktm and Husqvarna? Because my top end is all chewed up, from lack of oil.And I have meticulously maintained this bike my fresh filters and oil every eight hours. I just turned over 93 hours. The cylinder head is toast, and the camshafts are junk.....
|
CarlinoJoeVideo
Profile picture for user CarlinoJoeVideo
Posts
7358
Joined
11/30/2013
Location
Portland/Los Angeles, CA US
Fantasy
2361st
CarlinoJoeVideo 5/28/2020 7:09pm
5/28/2020 7:09pm
I’ve seen it at a shop before. Metal flakes plugged up one of the oil holes and starved the top end of oil.
Cary Kellum
Profile picture for user Cary Kellum
Posts
33
Joined
5/13/2020
Location
Valley Center, CA US
Cary Kellum 5/28/2020 7:38pm
5/28/2020 7:38pm
I see that’s exactly what happened, but metal flakes from what the oil pump,?
Radfonz
Profile picture for user Radfonz
Posts
145
Joined
1/6/2012
Location
AU
Radfonz 5/28/2020 8:33pm
5/28/2020 8:33pm
I have seen this before on the exact same model. Turned out the plastic idler gear that runs in between the clutch and the oil pump was faulty(warped) causing it to un mesh every now and then. I guess under normal riding conditions, the un meshing and re meshing can occur and not cause too much damage but In this case, the guy was on the road at a constant high rpm and the gear couldn't re mesh therefor completely fingering the motor!
1

The Shop

See All »
Cary Kellum
Profile picture for user Cary Kellum
Posts
33
Joined
5/13/2020
Location
Valley Center, CA US
Cary Kellum 5/28/2020 9:03pm
5/28/2020 9:03pm
Thanks for your input, it seems strange they use plastic gears. For such a critical part.
CarlinoJoeVideo
Profile picture for user CarlinoJoeVideo
Posts
7358
Joined
11/30/2013
Location
Portland/Los Angeles, CA US
Fantasy
2361st
CarlinoJoeVideo 5/28/2020 10:12pm
5/28/2020 10:12pm
I saw these guys on Instagram a few months ago developing a metal gear. They said they had 50 hours on it.

Radfonz
Profile picture for user Radfonz
Posts
145
Joined
1/6/2012
Location
AU
Radfonz 5/29/2020 12:05am
5/29/2020 12:05am
Husky/KTM have updated the part and know its a problem.New gear is still plastic, but stronger.
Part number on your gear will be: 792.38.006.000
Updated number is: 792.38.006.100
1
Cary Kellum
Profile picture for user Cary Kellum
Posts
33
Joined
5/13/2020
Location
Valley Center, CA US
Cary Kellum 5/29/2020 12:26am
5/29/2020 12:26am
Thank you so much guys, because I really love this bike, just really disappointed in the reliability, I have had fuel pump issues too. Just want to get it fixed so I can ride again!
Tuna
Profile picture for user Tuna
Posts
1582
Joined
4/3/2017
Location
CA
Tuna 5/29/2020 3:52am
5/29/2020 3:52am
Cary Kellum wrote:
Thank you so much guys, because I really love this bike, just really disappointed in the reliability, I have had fuel pump issues too. Just want...
Thank you so much guys, because I really love this bike, just really disappointed in the reliability, I have had fuel pump issues too. Just want to get it fixed so I can ride again!
I took my top end/head out on my 350 due to a blocked oil passage. Seems like some type of assembly material blocked it and starved the top end of oil.
Jeremy_Meske 3/3/2022 5:26pm
3/3/2022 5:26pm
I also have a 2017 FX350 that I bought used after previous owner had cam and head replaced. After my first ride, I noticed oil leaking out breather tube. I took it to a reputable local shop and the diagnosis: Faulty oil pump gears not meshing properly causing lack of lubrication. Same as the other guy claimed to have fixed. He supplied the repair receipt to me with the bike.
The fix: Total engine rebuild.
The cost: Don't ask! All I can say is, I should have bought new because I will now have spent more on a used bike. Sad day.
2

Post a reply to: Oil pump failure FX 350???