'95 Evinrude - No power at top end

[David Mcgyver]

Re: '95 Evinrude Ubside down jets?

Re: '95 Evinrude Ubside down jets?

I agree with the last post about the jets being switched. I wish I did not have EFI then my problem might be solved. There is no thread for my problem because some time you get what you pay for. I wish you well T, but this is so similar to the reed valve problem on that ol' Merc I have to smile. (Hasn't run for you yet) And the truth be told, either I am trying to help solve your problems or I am just trying to give the mojo back. Your persistence will pay off, I am sure of that. Remember my old advice too, I am falling back on that, fuel additives are your friend!!!!!!!!!!!!!!! Sounding off like a large pinneped.

 

[tboydva]

Re: '95 Evinrude - No power at top end

Sorry - this is a ramble on thread. Here's the synopsis:

1 - older motor, but only used for about 4 years (96-2000). Owner died, left to son, sat until 2009.
2 - looked like some leaking (crusting) on exhaust cover, took off powerhead and started "restoration." Including carb rebuild.
3 - paint job and reassembly. Ran great on muffs
4 - water test produced no high end.
5 - tried pumping bulb while under WOT. No help
6 - rebuilt/checked carbs again - readjusted floats.
7 - Jumped up at WOT (so it worked fine once!). Powered down, then no top end after idling for a few seconds.
8 - Can get up on a plane "goosing" the choke solenoid and stay on plane the same way.
9 - seems to be a carb issue (from carb to the fuel tank issue should have been "solved" by manually pumping the fuel delivery bulb).

Not sure how jets could be installed "backwards" as they are only slotted on one side to screw in? I'm not sure if it wasn't just a meniscus of fuel, but it was hard to see light through the draw tubes. I blew them out again fully with compressed air and they appear to be 100% clear. I'm beginning to think perhaps there might have been some occlusion in the tube?

 

[glassmaster68]

Re: '95 Evinrude - No power at top end

im not sure if your carbs have a passage from carb body to bowl,like a breathing hole,but i have seen the bowl gasket kick aside ever so slightly to block and restrict it[air pass],causing the high end to not get enough air to the bottom of the bowl to let the fuel go through,therefore not giving enough fuel either,,causes sort of an airlock right there in the bowl,,,,,anyways,double check bowl gaskets when you go back together with the carbs,,,it should be a carb issue,since youre having to choke it to keep it pulling fuel,dont give up yet

 

[tboydva]

Re: '95 Evinrude - No power at top end

I think the gasket argument might be on the mark... So, I'm going to feel really stupid if this is the answer, but I was putting my carbs back together after another full inspection, cleaning, blowing out. So, I noticed on the top one, that the top gasket (which has a channel from the HS jet to the little holes on the top of the carb) had compression marks on it - which looked like it had been installed upside down!!! The gaskets came in the kit I used this spring for the rebuild. So, it's entirely possible (especially since the others appeared to have compression marks consistent with the correct placement) that I put it on upside down from the getgo... Each time I redid the carbs, I've disassembled and laid everything out to go back the same way. I decided I'd pop the tops off one more time to make sure based on the drawing in the service manual...

I fired it up on the hose and she idles nicely. Now I just have to wait for a water test... I'll likely vent some anger if I was so dumb to rebuild wrong, but if I did and it works, it'll be a one time mistake I think... My older carbs were channeled in the casting. Got my fingers x-d.

 

[bob johnson]

Re: '95 Evinrude - No power at top end

when you say you "REBUILT " the carbs several times...are you using a new carb kit??

when you speak of the needle and seat...are you cleaning and RE-USING the needle and seat.....or....are you installing BRAND bew needle and seats???

so many people have such different views of what rebuilding a carb it...


did you remove any lead shot and clean out those passages??

how about the staked aluminum covers?? your carb have those??

did you pops out the old and replace with new after you cleaned out the passages?


did you run a file over the carb mate surface to see if it appears flat????

did you debur the intake mating surface??

just a few things to check for...

bob

 

[tboydva]

Re: '95 Evinrude - No power at top end

Bob - I ordered rebuilt kits for each carb - float needles and seats are new. I think I pretty well cleaned the passageways (including the little press-in covers). Sadly, as my last post indicated - I PUT THE TOP GASKET ON UPSIDE DOWN on one of the carbs...

I would love to say that I found a piece of gunk in the draw tube or some other such thing. The fact is I just bolo'ed the install. What a moron!!! My old carbs didn't have the channeled gasket like my new motor.

Anyway, I got them back together (with triple checking) and took her out this evening. It ran like it'd been insulted (as I need to be)! Well - I believe with the motor, I will NEVER again make this mistake!

All I can say is thanks for all the great comments and help and thanks for assuming I can look at a picture and put a piece of plastic on the right way. Sorry to prove you all wrong!

See you on the water!

 

[glassmaster68]

Re: '95 Evinrude - No power at top end

tboydva,,my last name is boyd,,i have a few kin folks in haysi,if you know where that is,,its in va,,,glad you got your mojo goin,,,,,,michael

 

[tboydva]

Re: '95 Evinrude - No power at top end

Michael - lots of Boyds in VA. Surprised you'd admit to it given my confession of stupidity! I know our clan spread West from VA (starting in the 1700s). Immediate family is near Northern VA now. Might be hard to believe, but I am a former West coast Boyd (San Diego).

I've always had old motors, so these new-fangled varieties tripped me up! She's really running well now!

 

[ChrisAG]

Re: '95 Evinrude - No power at top end

Really nice looking engine, I like those 3-cylinder loopers. Now that you have it working how does it go compared to your old one (what hp was it)?

 

[tboydva]

Re: '95 Evinrude - No power at top end

Both engines are 60HP. My older one is an '83. There are a few pictures of it here... It needs a coat of paint for sure, but it's got great compression and runs like crazy! The "new" one has power T&T which is very nice for the area I boat in. I just looks so dang nice all painted (including the powerhead). I also, so far really like the smoothness of the the 3 cylinder at idle (the way I've spent the last few outings!). The new one really runs great now. Both throw my small boat up on a plane in a hurry and run smooth (now) at WOT. The 3 cylinder seems quite a bit smoother at all RPM with less vibration. Maybe I'm just seeing it that way. Don't know about fuel consumption yet. My old motor could go for 2 days of fishing on 6 gallons. I think that'll be hard to beat...

To be honest, I don't know what to do now (with the older motor). I'm half tempted to keep it, see if I can find a mid-section with power T&T and clean it up a bit. Both cylinders are dead on 149 PSI compression and I just had the seals and clutch dog replaced in the lower unit, I replaced the water pump and (correctly) rebuilt the carbs in the last year. The only issue is that it's a pre-mix motor and the new one is OMS. I like the OMS (so far), so it'll be difficult to swap the motors every so often. Seeing as how I got the old boat with a new condition galvanized Shorelander ez-load trailer and this motor for $800, I think I've got a luxury problem!