xj1100 in-line fuel filters not getting enough gas with three

[xj11john]

I put 3 in-line fuel filters on my 4 cyl. xj1100 so two carbs had to share one-is it common to starve for gas with only 2 or 3 of these?

It would'nt run unless the choke was all the way or at leaste half way on, and when I went to ride it would die, is that my problem, or do I have another problem??

[chevy45412001]

floats

sounds like your carbs are not set right,like the floats are shutting off the fuel before the bowls are full.

[xj11john]

chevy

It worked fine before i spliced, and messed with the fuel lines and put the filters on.

I think I am going to buy one more filter and see if each carb has its own - filter and hose- that it might straighten out.

[xj11john]

does anyone have that routing for fuel lines and vaccuum lines for xj1100?

Maybe I messed up and got the vaccuum lines and fuel lines mixed up and placed filters and t's in bad places.

[chevy45412001]

xj

sorry didn't realize that you were fixing it. yes you probly got it backwards. I installed two very small in line filters on mine with no ill effects.Actually thanks for the reminder,need to change mine been about two years since i did a service on the carbs and filters.

[TopCatGr58]

Hey XJ11John,

Where did you get the filters, what kind are they? I was looking at some designed for lawnmowers, and was surprised to see that the fuel flow was from the small tapered end towards the large end. You would think it would be from the large end down to the tapered end!? Perhaps you put them on backwards!?
T.C.

[Pat Kelly]

If these are the "see-thru" filters you want the flow going from the outside of the filter media towards the inside. That way you can see when they need changing.

[xj11john]

Yeah, that is what I thought too

But I did put them going the right direction, but what I am thinking now is since I havent looked at them since it wouldnt run-due to rain, I'm not possitive but I may have put a "t" where the line comes down to the intake hose and since the fuel has to be able to go both directions here-and the filter a one way valve, maybe that is why it's not getting enough fuel, well tomorrow morning weather permitting I will check this theory out. Does that sound possible to you T.C.?

[xj11john]

Found a tech tip that may fix the problem

This tech tip has a routing that looks like it will solve my problem.

http://www.xs11.com/tips/modifications/mods26.shtml

[TopCatGr58]

Hey XJ11John,

Well, I'm still not sure why you wanted to put so many filters in line? You only need 1 for each pair of carbs before it goes into them. Putting a filter before the octopus is an idea to help it not get gunked up, but to have a clean supply from both petcock sources is why you would want to put filters just after both of those outlets before they get to the octy. So it's your choice on how much protection and whether you want to protect just the carbs, or both carbs and Octy, then run the hoses according to where you want the filtration to be effective.

That diagram shows modest loops of fuel line. You want to keep them as short as possible, and not to dip too far below the level of the carb bottoms. Hope you get some dry weather soon!
T.C.

[xj11john]

T.C.

I just realized that I was thinking that I needed a filter for all four lines, and since I had 3 I was just making two share, lol. I didnt look closely at the routing when I bought them, now I see from the routing diagrams that I have looked up that there are just two lines that carry fuel to the carbs. Also I think I may have had one filter upside down. I'm going to rerout with new line next dry day I get, hopefully tomorrow, cause I still have to get the front brakes done too. later and thanks all.

[pggg]

Inline filters are of no use whatsoever. These bikes have filters in the fuel taps. K.I.S.

[TopCatGr58]

Hey PGGG,

Well, I have to disagree! Shortly after putting them on my bike, I saw some nice little black rubber pieces, which helped to inform me that my petcock rubber valves were crumbling and soon to fail! Also, the innards of fuel lines could also break loose and clog the carbs passages. I've also seen fine rust particles that have gotten passed the tank filter towers!!
T.C.

[pggg]

Aha Curtis, if a rust paticle is fine enough to pass through the filter, then it won't be of any consequence! As for petcocks disintergrating and failing, you were soon going to find out about it anyway. heh - heh. And if someone is running rotting fuel hoses on their machine, then having to strip and clean out their carbs on the roadside is gonna ensure that they don't ever do it again! heh - heh - heh.

[John]

Damn Patrick!!!

Sounds like you have a mean streak today. I'll bet a nice triple clean would calm you down.