Topic: strange orange deposits in bowls

[bomorr]

I was taking my bowls apart to change my Main jets and noticed this weird orange deposits in the bowls and on the floats? IMO it looks like rust but this fine of material shouldn't have been able to get through the filter right? let me know what everyone thinks



Sent from my SM-G925V using Tapatalk

[RAFster122s]

Varnish?

[ekpent]

   I think it is indeed rust, have seen it before. It can get through the screen. Might want to check the bottom of your bowl on the petcock for more deposits if you have a 69-76 750 which it looks like and look your screen over well for imperfections. Not all rust is big and chunky. Is there any sign of rust in your gas tank ?

[flybox1]

+1
Rust from your tank.

[BomberMann650]

+1
Rust from your tank.

+2

Time to de-rust the tank.

[USMC5811]

Rust turns to "powder" and gets through. I had carbs rebuilt and  my mechanic added an additional fuel filter after petcock.


Sent from my iPhone using Tapatalk

[bomorr]

yea it looks like there is some slight rusting in the tank... looks like another thing to add to the winter teardown list.

Sent from my SM-G925V using Tapatalk

[BomberMann650]

Rust turns to "powder" and gets through. I had carbs rebuilt and  my mechanic added an additional fuel filter after petcock.

Fuel filters are a hot topic here 

[jonda500]

In my experience a little fine rust powder in the bottom of the petcock bowl and the float bowls doesn't seem to be detrimental to proper running of the engine in any way shape or form
John

[bomorr]

I have this style filter on after the petcock already.

I've always put one on my bikes but that's just personal choice. I don't want to start a pod vs stock airbox or oil dispute!

Sent from my SM-G925V using Tapatalk

[USMC5811]

I have this style filter on after the petcock already.

I've always put one on my bikes but that's just personal choice. I don't want to start a pod vs stock airbox or oil dispute!

Sent from my SM-G925V using Tapatalk

Yep - that's what I used


Sent from my iPhone using Tapatalk

[USMC5811]

If you can see rust on the bottom of your tank, I can almost guarantee you that the underside of the top is covered with it. Sloshing fuel will dislodge it while riding, then ultimately it will find its way to your carbs. Fine rust doesn't upset your engine, but let it collect in the slow jets, and it will absolutely clog them up.

De-rust your tank and leave the auxiliary fuel filter on the shelf.

It was first meant as a temporary fix - the PO replaced the screens of the petcock with a solid metal tube. At the time, zero filtering at all. Since then, I've replaced the petcock.
Taking care of the tank will commence once I admit riding season is over.


Sent from my iPhone using Tapatalk

[flybox1]

I dont think this filter will capture that powdery rust, but my 90deg gets some buildup after a few fillups...as seen below.  The nice thing about these is they can be reverse flushed and reused. My tank is sans sock filter.

[Don R]

 A magnet with a hole in the middle applied to the inlet of the filter will catch a lot of ferrous materials.

[Deltarider]

In my experience a little fine rust powder in the bottom of the petcock bowl and the float bowls doesn't seem to be detrimental to proper running of the engine in any way shape or form

This^. Your bike can cope with that. I have not read you had problems running. You may have if you install extra filters. I had problems with fuel filters and most irritating was that after an initial period with no problems, bike started to run poorly. By that time I had forgotten about those filters. I rearranged them and things were fine again. Then a fortnight later, again problems. Again I didn't expect the filters to be the cause. When I finally discovered they were, I decided to dispose them alltogether and further rely on the petcockfilter. Anything that passes there is not a problem, not if you've made it a habit to drain the bowls say every 3 months. The type filter as shown in the pic is more a gadget and does not filter as good as a paper core one.

[PeWe]

Rinse tank every winter? All gasoline out except for a liter, shake it and check if it contain dirt possible to clean with coffee filters in a petrol can.

When it look clean, mix some spoons of oil with gasoline and shake again. Diesel might be fine too
Refill tank with the fresh filtered gasoline.
I have read here that some guys use oil mixture very often to avoid tank to corrode.

[bomorr]

A magnet with a hole in the middle applied to the inlet of the filter will catch a lot of ferrous materials.

^ that's a good idea, with a filter like Flybox is running if you just glue a tiny neodymium magnet on the bottom and back flush every few tanks that may take care of anything making its way into the carbs.

Sent from my SM-G925V using Tapatalk