Inline filter or not?

[Knapdog]

Have stripped and cleaned the carbs and noticed a bit of dirt at the bottom of each of the bowls.
The bottom of my petcock screen filter was a bit jagged where it's stuck in the tank and been pulled through with a pliers and I'm wondering if muck is getting past that. The mesh screen is undamaged.
I've ordered a new screen filter though I'll be fitting it on a new cbr600 petcock that I've bought to do away with the vacuum line.
I've had one previously and I don't find it a chore to keep turning the petcock off.
What do you think about including an inline filter as well
I haven't done a "search" but I seem to remember that they're not recommended.

[Chrisj CMA]

The inline filters seem to be a common cause of fuel starvation when added. A new OE in the tank filter could be sufficient.

[98valk]

as Chris stated.
so don't use an additional filter, esp., since this is a gravity feed fuel system. The largest gravity fed fuel filter I've found is for a Kohler 50hp engine, the filter is very large and two would be needed our engines and they are not cheap.  Honda engineers know what they are doing.

[Timbo1]

I know many have stated filters are bad but if your in doubt I'd say put one in. It's better than letting the crud get into the carbs.  One of my Valks petcock & screen corroded and partially disintegrated and while I couldn't get a new one quickly & I was anxious to get to riding so I put in a Edelbrock 8139 filter.  I'm glad I did as once I received the new petcock & screen I opened the Edelbrock and there was quite a bit of debri that had been caught inside it.  I put the new petcock in and left the inline filter in place after cleaning it and have had no ill effects to this point.  I cut out exactly the amount of fuel line to fit it in without changing the attitude of the original line and the 3/8 ends are very tight inserting into the oem fuel line so there is no restriction to the fuel flow.


This is the one I used, it is a bit large to fit into the area but it will fit. I got mine from Oreilly auto parts but I'm sure most any automotive would carry it.
https://www.edelbrock.com/3-aluminum-street-fuel-filter-in-red-finish-8139.html

I'm going on over 5 years now with an inline filter without any problems.  I like the extra sense of security the filter provides me.  I've never had any fuel starvation but I don't ride full throttle for long periods of time either.

[Warlock]

Have stripped and cleaned the carbs and noticed a bit of dirt at the bottom of each of the bowls.
The bottom of my petcock screen filter was a bit jagged where it's stuck in the tank and been pulled through with a pliers and I'm wondering if muck is getting past that. The mesh screen is undamaged.
I've ordered a new screen filter though I'll be fitting it on a new cbr600 petcock that I've bought to do away with the vacuum line.
I've had one previously and I don't find it a chore to keep turning the petcock off.
What do you think about including an inline filter as well
I haven't done a "search" but I seem to remember that they're not recommended.

As stated there is a filter in the tank plus a filter on every carb as it enters the float needles.  David

[Pluggy]

The in-tank filter for my 4 cylinder Honda became unavailable. I installed an in-line filter and the bike acted empty with a half tank of gas.  Reserve didn't help.  Turns out how I added the filter made the fuel hose run slightly "uphill".  

I shortened the hose so the flow was all "downhill".  All is good. The fuel flow problem wasn't the filter, but how I installed it.

On my Valkyrie, the in-tank filter is always clean and the only filter used.

[Knapdog]

Have stripped and cleaned the carbs and noticed a bit of dirt at the bottom of each of the bowls.
The bottom of my petcock screen filter was a bit jagged where it's stuck in the tank and been pulled through with a pliers and I'm wondering if muck is getting past that. The mesh screen is undamaged.
I've ordered a new screen filter though I'll be fitting it on a new cbr600 petcock that I've bought to do away with the vacuum line.
I've had one previously and I don't find it a chore to keep turning the petcock off.
What do you think about including an inline filter as well
I haven't done a "search" but I seem to remember that they're not recommended.

As stated there is a filter in the tank plus a filter on every carb as it enters the float needles.  David

Where is the filter, exactly,  that you say is on every carb, as it enters the float needles?

[98valk]

I know many have stated filters are bad but if your in doubt I'd say put one in. It's better than letting the crud get into the carbs.  One of my Valks petcock & screen corroded and partially disintegrated and while I couldn't get a new one quickly & I was anxious to get to riding so I put in a Edelbrock 8139 filter.  I'm glad I did as once I received the new petcock & screen I opened the Edelbrock and there was quite a bit of debri that had been caught inside it.  I put the new petcock in and left the inline filter in place after cleaning it and have had no ill effects to this point.  I cut out exactly the amount of fuel line to fit it in without changing the attitude of the original line and the 3/8 ends are very tight inserting into the oem fuel line so there is no restriction to the fuel flow.


This is the one I used, it is a bit large to fit into the area but it will fit. I got mine from Oreilly auto parts but I'm sure most any automotive would carry it.
https://www.edelbrock.com/3-aluminum-street-fuel-filter-in-red-finish-8139.html

I'm going on over 5 years now with an inline filter without any problems.  I like the extra sense of security the filter provides me.  I've never had any fuel starvation but I don't ride full throttle for long periods of time either.

this country has very clean fuel, so what extra sense of security do u think your getting? or do u know something the Honda engineers don't know?

low fuel can lead to leaness which can damage piston tops and/or causing high operating temps.

[fudgie]

I run an AC Delco one in line with my Pingel. Prob going on 20 yrs now with no issues.

[GiG]

... Prob going on 20 yrs now with no issues.

Uhh... I seem to recall some times running ~  unfiltered ~   

[Pluggy]

I run an AC Delco one in line with my Pingel. Prob going on 20 yrs now with no issues.

Yes.  A gusher of fuel is not needed to keep a Valkyrie running.  A 30 mpg motorcycle running 60 mph uses 2 gallons of fuel an hour.  If a Valkyrie gets fuel starved, it is likely the filter (or installation of the filter) is incorrect.

[Warlock]

Have stripped and cleaned the carbs and noticed a bit of dirt at the bottom of each of the bowls.
The bottom of my petcock screen filter was a bit jagged where it's stuck in the tank and been pulled through with a pliers and I'm wondering if muck is getting past that. The mesh screen is undamaged.
I've ordered a new screen filter though I'll be fitting it on a new cbr600 petcock that I've bought to do away with the vacuum line.
I've had one previously and I don't find it a chore to keep turning the petcock off.
What do you think about including an inline filter as well
I haven't done a "search" but I seem to remember that they're not recommended.

As stated there is a filter in the tank plus a filter on every carb as it enters the float needles.  David

Where is the filter, exactly,  that you say is on every carb, as it enters the float needles?

If you have ever replaced the o rings on the fuel rack you can see them inside there. They are located on the float needle brass seat. in this video at mark 16:02 he shows the filter. https://www.youtube.com/watch?v=Wf45C7N1nYI David

[Timbo1]

I know many have stated filters are bad but if your in doubt I'd say put one in. It's better than letting the crud get into the carbs.  One of my Valks petcock & screen corroded and partially disintegrated and while I couldn't get a new one quickly & I was anxious to get to riding so I put in a Edelbrock 8139 filter.  I'm glad I did as once I received the new petcock & screen I opened the Edelbrock and there was quite a bit of debri that had been caught inside it.  I put the new petcock in and left the inline filter in place after cleaning it and have had no ill effects to this point.  I cut out exactly the amount of fuel line to fit it in without changing the attitude of the original line and the 3/8 ends are very tight inserting into the oem fuel line so there is no restriction to the fuel flow.


This is the one I used, it is a bit large to fit into the area but it will fit. I got mine from Oreilly auto parts but I'm sure most any automotive would carry it.
https://www.edelbrock.com/3-aluminum-street-fuel-filter-in-red-finish-8139.html

I'm going on over 5 years now with an inline filter without any problems.  I like the extra sense of security the filter provides me.  I've never had any fuel starvation but I don't ride full throttle for long periods of time either.

this country has very clean fuel, so what extra sense of security do u think your getting? or do u know something the Honda engineers don't know?

low fuel can lead to leaness which can damage piston tops and/or causing high operating temps.

The purpose of a fuel filter is to prevent contamination from entering the fuel system,  that's the extra sense of security I get.  I'd rather catch any contamination before it reaches the carbs not at them.  I've not seen any Honda engineers testing for contamination anywhere I've purchased petrol.   And they put fuel filters on every bike I've seen.   The plastic one in the tank on a Valk that disentigrates over time is a poor excuse for a filter IMO.  I have filters on all my gas engines and they work well filtering the contaminants from our "very clean fuel" and I replace or clean them regularly.

[Pluggy]

Can the owners who ride with an in-line filter share what they use?  Brand and model number?

[Chrisj CMA]

I know several Valkyrie riders. I think only one I know of has an additional inline filter. He didn't seem to have any issues. Done right, it doesn't appear to hurt. Is it necessary?  I think, no

Several had issues and like already stated all fuel filters are not equal, it must flow enough fuel. And installation is critical. Fuel line needs to stay straight

Be careful out there.

[98valk]

I know many have stated filters are bad but if your in doubt I'd say put one in. It's better than letting the crud get into the carbs.  One of my Valks petcock & screen corroded and partially disintegrated and while I couldn't get a new one quickly & I was anxious to get to riding so I put in a Edelbrock 8139 filter.  I'm glad I did as once I received the new petcock & screen I opened the Edelbrock and there was quite a bit of debri that had been caught inside it.  I put the new petcock in and left the inline filter in place after cleaning it and have had no ill effects to this point.  I cut out exactly the amount of fuel line to fit it in without changing the attitude of the original line and the 3/8 ends are very tight inserting into the oem fuel line so there is no restriction to the fuel flow.


This is the one I used, it is a bit large to fit into the area but it will fit. I got mine from Oreilly auto parts but I'm sure most any automotive would carry it.
https://www.edelbrock.com/3-aluminum-street-fuel-filter-in-red-finish-8139.html

I'm going on over 5 years now with an inline filter without any problems.  I like the extra sense of security the filter provides me.  I've never had any fuel starvation but I don't ride full throttle for long periods of time either.

this country has very clean fuel, so what extra sense of security do u think your getting? or do u know something the Honda engineers don't know?

low fuel can lead to leaness which can damage piston tops and/or causing high operating temps.

The purpose of a fuel filter is to prevent contamination from entering the fuel system,  that's the extra sense of security I get.  I'd rather catch any contamination before it reaches the carbs not at them.  I've not seen any Honda engineers testing for contamination anywhere I've purchased petrol.   And they put fuel filters on every bike I've seen.   The plastic one in the tank on a Valk that disentigrates over time is a poor excuse for a filter IMO.  I have filters on all my gas engines and they work well filtering the contaminants from our "very clean fuel" and I replace or clean them regularly.

My oem in tank filter is still perfect after 26yrs, the wrong off the shelf fuel additives will destroy the plastic filter and nothing else. the in tank fuel filter catches all of the contaminates in todays fuel.  do you run extra filters besides the main oil filter for all your vehicles? if not why note? ever see virgin oil analysis of new motor oil? if u did u would be prefiltering it, there are machines out there to do it.  are you running double air filters? since it is well know that dirty air wears out an engine faster than any so called perceived fuel contamination.

[Timbo1]

Can the owners who ride with an in-line filter share what they use?  Brand and model number?

Edelbrock 8139,  it's linked one of the previous links.

[Timbo1]

My oem in tank filter is still perfect after 26yrs, the wrong off the shelf fuel additives will destroy the plastic filter and nothing else. the in tank fuel filter catches all of the contaminates in todays fuel.  do you run extra filters besides the main oil filter for all your vehicles? if not why note? ever see virgin oil analysis of new motor oil? if u did u would be prefiltering it, there are machines out there to do it.  are you running double air filters? since it is well know that dirty air wears out an engine faster than any so called perceived fuel contamination.

Well the good thing is in our country you can run a 26yr old plastic screen filter if you choose, no one is going to stop you.  As for comparing the filtration of the air, fuel, oil or cooling system as if they're the same is a bit moronic as they have different requirements. So I'll stay on topic of the OP's question and be happy with my choice of an inline filter.  But I will tell you I don't even run a filter on my cooling system.

[98valk]

Can the owners who ride with an in-line filter share what they use?  Brand and model number?

Edelbrock 8139,  it's linked one of the previous links.

u can do what ever u want, however "sintered-bronze 40 micron element"  is major restriction in a gravity fuel supply system. most likely the engine is running lean and over heating the top piston ring/s

https://www.summitracing.com/parts/EDL-8139

[Hook#3287]

I installed one 20+ years ago and had done it correctly so there was no "uphill" in the line.

Rolling down a highway around 70 mph for a extended period of time, the engine just stopped.

Pulled over, sat a bit, started up and when I got home, I removed it.

Maybe wrong filter that didn't provide the volume needed, but it's not an issue any more.

I've owned 5 different Valks and can say I've never experienced a carb contamination issue from lack of gas filtering.

Yrmv

[GiG]

Installed a generic off-the-shelf in-line fuel filter on my '97 many years ago.
"No particulate reason",  no issues, still filtrating...  coolsmiley

[fudgie]

... Prob going on 20 yrs now with no issues.

Uhh... I seem to recall some times running ~  unfiltered ~   

[vanagon40]

Can the owners who ride with an in-line filter share what they use?  Brand and model number?

I added a Purolator (Champion) FF1203 (OEM F10024) fuel filter in 2009. No problems in the 16 years since.

[Knapdog]

Can the owners who ride with an in-line filter share what they use?  Brand and model number?

I added a Purolator (Champion) FF1203 (OEM F10024) fuel filter in 2009. No problems in the 16 years since.

Do you find with that filter the problem of not seeing the cack that can build up due to its metal casing?
Presumably you have to disconnect the fuel line from the petcock to check it, or even have to take the fuel tank off to get access to unscrew the filter.
How often do you check it, plus does Purolator have see through ones?

[vanagon40]

Can the owners who ride with an in-line filter share what they use?  Brand and model number?

I added a Purolator (Champion) FF1203 (OEM F10024) fuel filter in 2009. No problems in the 16 years since.

Do you find with that filter the problem of not seeing the cack that can build up due to its metal casing?
Presumably you have to disconnect the fuel line from the petcock to check it, or even have to take the fuel tank off to get access to unscrew the filter.
How often do you check it, plus does Purolator have see through ones?

Never checked it. Installed it and ignored it.