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e004698

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Reply with quote  #46 
OK. Called my dealer who has never sold a VST filter for some of those crimp style clamps 348839. He doesn't stock those either. I suggested they purchased fuel clamps elsewhere, nope, just genuine OEM. So I removed the bonnet from my engine to photo the clamps and saw a gas leak where fuel line connects to the lift pump. Enough gas was pooled there to wet the tip of my finger. Too sunny to get a decent picture. Now I really do need some clamps. Could a fuel leak there be the cause of my pulsating rpm?
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Capn Bill 22' Manitou 90 e-tec
E90DPLSUM
Beaver Dam Lake, WI
PhilH12

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Reply with quote  #47 
Doesn't sound like he does much "servicing" of E-TEC's then - not even hose clamps in stock?

I would "thoroughly" check all of those fuel delivery hoses for condition.  Stale fuel can eat them from the inside while they look perfect on the outside.  

And Yes, when running under vacuum that leak could well be pulling air instead of fuel leaking out.  That causes Lean condition which is not good for the HP pump, fuel injectors, and combustion chamber temps.  You can cause your motor to become an expensive boat anchor if not corrected.  Lift pump vacuum, pressure and clear hose tests, along with the HP pump pressure test sound like they are in order.  All in the SM, and best done on the water for "true" results.

Phil

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20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
rickmcd53

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Reply with quote  #48 
Just cleaned a vst filter on a 90 after replacing an injector. Cut the zip tie holding the hoses together, removed the outer water hose from the VST, cut the otiker clamps with a Dremel tool, slipped hose off and removed filter with a curved pick. Wasn't too bad just a black film on the screen that washed off with brake cleaner. Not bad for 2700 hours on a 2012 engine
PhilH12

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Reply with quote  #49 
I'd wonder what the black film was - Something from the inside of the hoses or injectors?  But Yes, not bad for a 6 year old motor!  [smile]

As has been said more than once on here - more die from lack of use, than overuse.  (with the implication that they are maintained properly)

Phil

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Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
e004698

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Reply with quote  #50 
I ordered four hoses pictured in the fuel filter section of the parts catalog for E90PLSUM, a fuel filter and the crimp clamps, plus a new hose and bulb from my tank to the engine. I already have the VST filter. I was feeling pretty good about everything, so I took the engine cover up to the garage for some TLC, good cleaning and some wax. I put the motor bonnet on the backrest of the mower seat to use it as a buck. I dropped the hood bonnet on the garage floor and broke it in the decal area just below the handle. I am feeling sick about it. I guess it was pretty slick from the wax.
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Capn Bill 22' Manitou 90 e-tec
E90DPLSUM
Beaver Dam Lake, WI
PhilH12

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Reply with quote  #51 
Don't beat yourself up too badly.  I don't think that there's anyone on here that hasn't done the same or even worse - fry EMM's, fry water pumps (me!), etc..  A while ago, I suggested a new Category for "What Foolish Thing I Did Today".  [frown]  That new Category hasn't happened, but it still happens every day in the real world.

There are some fairly recent posts on how to fix the plastic - go to the Latest Topics tab, and scroll back down for something about "cowling", if I recall correctly.  There are some glues/epoxies and fiberglass mesh, etc. hints that may help you out.

Let us know how it turns out!

Phil

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Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
PhilH12

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Reply with quote  #52 
I did have to do a Search, but we don't know how it turned out.

  http://www.etecownersgroup.com/post/2005-etec-75hp-lower-cowl-halves-cracked-fixed-9755631?pid=1304413273&highlight=cowling  

Phil

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Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
e004698

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Reply with quote  #53 
Yesterday was the day I got the fuel lines replaced. I got the VST filter replaced as well as the large fuel filter.
The guy who worked on it claims to have cleaned the screen at the bottom of the fuel pump and I believe him. Replaced fuel line also from the portable Duratank. Motor started right up at the boat launch.and ran smooth. When my neighbor returned with the car, we went for a boat ride, everything good even at WOT. Ran out of gas. Switched tanks, not running well. Poured gas from tank two into original tank, ran better. Inspected tank two on shore, no obvious defects. Removed innards,pickup screen appeared collapsed, but no crud. This morning, I tried again and am back to original symptoms of surging. I ordered at a Duratank this morning. I am at my wit's end. I am the first one to admit I used gas with ethanol the first few years of ownership.

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Capn Bill 22' Manitou 90 e-tec
E90DPLSUM
Beaver Dam Lake, WI
PhilH12

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Reply with quote  #54 
Sounding to me like a problem in that 2nd tank "somewhere".  You say the pickup screen appeared collapsed on that one, and ran a bit better when moving the fuel back to #1, after the motor ran fine from #1 until empty.

You may try the Lift Pump vacuum and clear hose tests on that 2nd one - while on the water.  Then again, it could be just "bad/old" fuel in that 2nd tank?

I don't think it's as much the ethanol itself, but letting it sit without any additives like EV 2+4 or StaBil 360 Marine that causes the most problems.

Phil

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Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
e004698

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Reply with quote  #55 
New tank will get fresh non ethanol gas and 2 plus 4.
I am glad I changed VS T filter. I will attempt to attach a photo. Believe me, when I saw this I thought my problems were over. Thanks Phil and all the others for all your support.

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Capn Bill 22' Manitou 90 e-tec
E90DPLSUM
Beaver Dam Lake, WI
steelhead

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Reply with quote  #56 

Portable tanks cause so many fuel issues, fuel starvation, vent blockage, cracks, rust through, too small fuel pickup problems, hairball plugups especially in the tight 90 bends and the so called no leak quick connectors.  Ruined too many boating trips for me.

If you have any way to change to an boat installed tank Moeller plastic or aluminum with quality marine stainless steel 3/8" fuel pickup and high quality 3/8" ID marine fuel hose directly into the motor, it's worth the expense.  

Do you run a boat mounted water separator and 10 micron dirt filter now?  More than worth its cost and install time in prevented expensive motor damage and ruined trips.

e004698

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Reply with quote  #57 
Ironically, I did this to myself. When I bought the Manitou pontoon boat new, I requested portable tanks as there was nowhere to purchase fuel on our lake. I thought filling the portable tanks at a gas station would be a lot more convenient than filling a gas can and transferring the fuel. It was the way I'd done it with my previous boat powered by a four stroke Mercury that never gave me any trouble. No, I have not installed the additional fuel filter. I am not exactly tool time Tim but take the suggestion under advisement.
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Capn Bill 22' Manitou 90 e-tec
E90DPLSUM
Beaver Dam Lake, WI
rickmcd53

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Reply with quote  #58 
We haven't had any problems with portable tanks that are less than 6 years old. All of our 25 - 60's run them and a few pontoon boat with 75 - 115.
e004698

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Reply with quote  #59 
Thanks, Rick. I hope this new tank makes a difference.
Wondering also if connector to the tank can go bad. New one ordered, should be here tomorrow. The replacement fuel line I got did not include connector to the Duratank. By now, I should have everything replaced. Engine is still cutting out esp approaching WOT.

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Capn Bill 22' Manitou 90 e-tec
E90DPLSUM
Beaver Dam Lake, WI
rickmcd53

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Reply with quote  #60 
One 3/8" splice Barb and 6" of clear vinyl tubing spliced into the fuel line where it connects to the engine will give a visual indication of fuel flow or air bubbles in the line from tank connections. On a pontoon hull it would take someone to watch it while running at full throttle.
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