10 micron filters cleaning?

[jekyl]

I recently replaced all fuel filters on both hpdi 200's. However i either have bad fuel or something in the tanks .
The boat ran really well while Ken Lahr was here (3 days)but on the day after he left I couldn't get my portside mtr to get past 3500rpm.
I removed the portside 10 micron filter and there was no sign of water but a gelitinous substance ran out of the filter.
Q1 any ideas what this would be ? I also had just put a measure of fuel cleaner and decarboniser in the tank before the trip. The motor had consumed the whole tank at this stage and i was nearly at the bottom of the main tank.
Q2 these yamaha filters were $50 each and are virtually brand new. Can they be cleaned?
Q3 The local Yamaha dealer and his mechanic of 20 years has never heard of Ringfree and does not believe it is part of Yamaha warranty policy in Australia . That is why i used the fuel conditioner he recommended by Evinrude.....

 

[gradyfish22]

On the HPDI, I would recommend the ringfree, it was required here in the US by my dealer, and we stopped using it one season and used another brand and you could tell the difference in the color of my plugs after. Other brands will work that are designed to do the same thing, but Yamaha has specific chemical additives that are specific to their engines, each manufacturer has their own blends to optimize their own engines. I do not believe there is a way to actually clean out the 10 micron filter, I'm sure someone can suggest something that may work, but I don't think they can ever clean back to new.

 

[Grog]

You don't need "Yamaha" filters, Racor makes a nice filter that will fit the housing, they cannot be cleaned.

Did you check the other filters for clogging? You have like 3 or 4 more filters on the HPDI's.

 

[TBone]

You don't need "Yamaha" filters, Racor makes a nice filter that will fit the housing, they cannot be cleaned.

Did you check the other filters for clogging? You have like 3 or 4 more filters on the HPDI's.

Make sure you do find and check replace all those filters too. Dont

try to run them thru because you but some additive in the tank.

If you run hard it you may starve it for fuel, and you now what that means

for the engine @ high RPMs, :shock: Pre-detonation and a bullet hole thru

the piston :cry: It could happen if some cylinders are starved and others

are not. You dont want to run it lean! Clean every thing good and replace all the filters new, you can

buy after market filters, and yes definately use ring free.

 

[Kenlahr]

Haydn,
I am fairly certain that they cannot be cleaned out. More than likely you had "gunk" in the tank and it clogged the filter. Did you check the other one? As for "Ring-Free", you may also want to look into Sea Foam. It is the same stuff; I run it it my 4-strokes and ran it in my OX66 226.

Does your gas at the pump have any other additives in it? Ours has E10 which acts as a tank cleaner the first few fill ups, which causes quick filter clogs.

Hope that helps!
Ken

 

[jekyl]

thanks guys I did pull the other filter but there did not appear to be anything in it.I also had just replaced the Yamaha only filters on the motors which where like $250 each!

 

[gradyfish22]

As Grog mentions, there are filters by Racor that work as well and may cost you less, or might be easier to obtain, I'm not sure how hard it is to get parts for you, but Racor's are used all over the world. If the engine boggs down again, try having someone pump the ball located where the fuel switch is I believe on 2 stroke models, if the engine turns up past 3500 rpm's and seems to want to run, you either have a bad clog somewhere else, or it may be your 2 low pressure fuel pumps, I had a similar issue with my HPDI, thought it was filters also but it was not. It would run fine, but rough weather or long runs would seem to make it bog down over time, pulling back on the throttles and letting the engine sit and then going again would briefly solve it. If that does not work, then there is a good chance that you may have bad fuel or something in there.

 

[Grog]

You need a solid foundation. If the other filters were never changed, that's probably the culprit. When my fuel pumps went bad, whenever I gave it throtle, the motor fell on it's face. It wouldn't have gone anywhere near 3500 RPM in gear. Didn't gw204 (Brian) do a post about pulling apart his ox-66's which are simalar to the HPDI's as far as filters?

 

[BobP]

What did your Yamaha mechanic say about the gelitinous material ?

 

[Boats Rock]

The gelatinous material if it has a opaque or dark color could be the results of plastic or rubber breaking down. Not necessarily from the boat. Grady uses aluminum tanks but the fuel lines or the storage tanks could be the root cause.