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Old 12-04-2010, 12:51 PM   #61
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RE: Small Surges in RPM Every Few Minutes.

Quote:
SeaHorse II wrote:

*
GonzoF1 wrote:... I am going to change the filter FIRST
I'm betting that the filter is the culprit.

*

*



And you, sir, win the internet.

Preliminary findings today show that it appears that a filter change has done the trick. Changed it back to a 10mic and went out for about an hour without a hiccup. We'll see it the streak continues.

*

Seven pages... Just for a filter change. I deserve to be flogged!
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Old 12-04-2010, 01:07 PM   #62
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RE: Small Surges in RPM Every Few Minutes.

Quote:
GonzoF1 wrote:
.

*

Seven pages... Just for a filter change. I deserve to be flogged!

*
Be in the town square at 1400hrs. We'll get the job done. Thirty lashes should do.

*
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Old 12-05-2010, 08:31 AM   #63
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RE: Small Surges in RPM Every Few Minutes.

Hiya,
** Congrat's Mr. Gonzo.* Although changing the filter DID seem to cure the problem it could also be that you fixed your air leak at the same time.** Just sayin'
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Old 12-05-2010, 08:35 AM   #64
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RE: Small Surges in RPM Every Few Minutes.

I had a similar problem once and it turned out to*be the sealing ring in the cap of the Racor filter assembly.
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Old 12-05-2010, 10:28 AM   #65
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RE: Small Surges in RPM Every Few Minutes.

Quote:
RT Firefly wrote:
"..... it could also be that you fixed your air leak at the same time...."
It's certainly possible but the point is , "When trouble shooting, go upstream in the
system first to check on power, connections, leaks, clogged filters, etc."

I once had a FloScan indication of an increased fuel flow on my starboard engine
(48' Offshore) and I sent the mate (hired) down below to check for fuel leaks. He
found a spin on engine fuel filter had not been tightened by the mechanic and was
spraying fuel all over the place. Needless to say the filter was tightened, problem
resolved and the mechanic replaced.

*
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Old 12-05-2010, 12:07 PM   #66
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RE: Small Surges in RPM Every Few Minutes.

*"had a similar problem once and it turned out to*be the sealing ring in the cap of the Racor filter assembly."

Wish I had a nickel for every time I solved this problem on ou rdock over the years.
I'd have a quarter by now.
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Old 12-05-2010, 04:25 PM   #67
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RE: Small Surges in RPM Every Few Minutes.

That is an excellent point. I did my due diligence this time and replace both o-rings on the filter when I changed it (one on the t-handle). I cleaned the channel it was in, the mating surface, and made extra sure I did what I could to seal it as best I could. Even thought about using a little bit of petroleum jelly, but I was wedged in a small space and really didn't feel like squirming out again to fetch it.

So it could have been either. Couldn't fix one without the other and wanted to fix it WITHOUT buying a new tool just yet.
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Old 12-05-2010, 04:49 PM   #68
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RE: Small Surges in RPM Every Few Minutes.

Quote:
GonzoF1 wrote:

... and wanted to fix it WITHOUT buying a new tool just yet.
Glad to hear it is fixed, but finding a reason NOT to buy a new tool borders on heresy!
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Old 12-05-2010, 06:22 PM   #69
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RE: Small Surges in RPM Every Few Minutes.

After spending about $500 more than I expected on the hard last week, the actual cruise to Carolina Beach, and a looming $5000 canvas job... Every save penny counts right now.

Can I borrow yours?

Tom-
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Old 12-05-2010, 06:40 PM   #70
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RE: Small Surges in RPM Every Few Minutes.

Quote:
GonzoF1 wrote:Can I borrow yours?
It's in my toobox on the boat in Maryland. If I had it here (Fort Lauderdale) you would be welcome to borrow it though.
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Old 12-18-2010, 07:49 AM   #71
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RE: Small Surges in RPM Every Few Minutes.

I really do not want to start this discussion again.* Ok, maybe I do?*


*
Our Webasto diesel boiler had a small slow air leak that over several days filled the filter is air and it should shut down.* Since the air was trapped in the filter I knew it was either before the filter or the filter as filter are on the major cause of fuel problems.*


*
So I took, FF and RickB, suggestion and installed an inline clear fuel filter.*Filter cost 6 bucks.* I by passed the filter and installed the clear filter at the top of a loop so the air could be seen and trapped.* Sure enough there were where tiny little air bubbles so I knew it was not the big filter.* Since I could see the air bubble I start tightening fitting.* I found on of the old fittings was sucking a bit of air and tightening it one turn the air leak stopped.


*
Also the Webasto draws more fuel than it uses for it cleans/polishes the fuel.* I been polishing the fuel and using additives for 13 years, with not fuel problems, except this leak. **So I added the in line filter to my bag of tricks.* *The suggest was made in the the first 2 pages and it took 6 more pages of stuff.****
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Old 12-20-2010, 06:12 AM   #72
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RE: Small Surges in RPM Every Few Minutes.

Gonzo
My post back on Dec 2 suggested you start by changing the filter.

Changing the filter when troubleshooting a diesel fuel problem is so simple, especially since you said you had 70 hrs on your filter. I once had complete fuel starvation from a 2 mic filter with 80 hrs.

Glad you got it fixed !!!

So now you might begin to consider the condition of your fuel. Clogging at 70 hours indicates your fuel is in worse condition than you think.

Start thinking about installing a multi-stage filtration system.

R.
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Old 12-20-2010, 06:56 AM   #73
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RE: Small Surges in RPM Every Few Minutes.

Good suggestion Ralph - I'd add to it "Do not use 2 micron filters again as your primary filter." Except to mollify RTF of course who paid dearly to get nominated for the* the "Hall of Flame."
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Old 12-20-2010, 08:36 AM   #74
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RE: Small Surges in RPM Every Few Minutes.

Hiya,
** Mr. sunchaser.* How did I pay dearly for my current "lofty" position?* I did NOT solicit or support,*in any way, shape or form my "nomination".* It was someone elses, alcohol induced (I think), idea.
** You folks can filter however you wish but MY system works for me (and I suspect others who were too intelligent to get caught up in the "discussion").
*** YMMV
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Old 12-20-2010, 08:51 AM   #75
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RE: Small Surges in RPM Every Few Minutes.

Quote:
sunchaser wrote:Except to mollify RTF of course who paid dearly to get nominated for the* the "Hall of Flame."
You obviously don't know what you're talking about which makes all your
suggestions suspect at best.

*
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Old 12-20-2010, 09:51 AM   #76
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RE: Small Surges in RPM Every Few Minutes.

I am still going to vote for 2 microns. At trawler speed my 330 Cummins won't know the difference. I once had a 2 micron 1000 series on a 6-71 go at 19 hours. It had been there for only 6 months. My mechanic said that time and use can do in a Racor. This was 10 years ago. Have Racors been improved so as to not deteriate by soaking un-used in fuel?

I have a single engine boat with no vacuum gauge (but considering one). I consider a frequesnt change of my 900 pretty cheap insurance. Failing that, I consider Tow Boat/US as my get home engine.
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Old 12-20-2010, 10:26 AM   #77
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RE: Small Surges in RPM Every Few Minutes.

For those who use less than 97.5 gal of fuel *per year, a 2 micron primary filter*is just fine. Then for those of us with hair on our chest ----------.
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Old 12-20-2010, 10:30 AM   #78
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RE: Small Surges in RPM Every Few Minutes.

Seahorse -- Rumor has it that RTF bribed his way into the Hall of Flame by donating a much appreciated electric Yugo roadster to someone in SoCal.
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Old 12-20-2010, 11:58 AM   #79
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RE: Small Surges in RPM Every Few Minutes.

Quote:
sunchaser wrote:

"Do not use 2 micron filters again as your primary filter." Except to mollify RTF of course who paid dearly to get nominated for the* the "Hall of Flame."
I dunno..... Our diesel shop, friends of ours who've been in the marine engine design and manufacturing business for three-plus decades,* a couple of commercial vessel owners we know, and most of the (who I consider) knowledgeable boaters we know all use and recommend 2-micron filters all the way through the system--- primaries and secondaries.* Their reasoning has always been the same--- the farther away from the engine(s) you catch stuff the better.

So that's what we've done these last twelve-plus years and to date the filters that come out look pretty much like the new filters going in other than being darkened by the time spent immersed in the red-dyed fuel.

*
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Old 12-20-2010, 02:52 PM   #80
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RE: Small Surges in RPM Every Few Minutes.

Here we go....the "micron filter" discussion !

2 micron is good to use, as long as it is AFTER other filters to pull out the larger particles first. If using only a single filter and you drop in a 2 micron cartridge, it WILL clog faster than if at the end of multi-stage filtration.
Google TONY ATHENS and read is publications about multi-stage filtration.
R.
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