Printable View
"enrichment" circuit"............. :thumbsup:
main fuel can go thru tha carb bowls (in one side of tha bowls and out tha other) to another carb top to bottom or bottom to top... and/or use two T's on same side of carbs and only go "in" each carb... bottom to top and/or top to bottom....
Jet holder went out this morning. Posted the tracking number in your PM.
Rock
Quote:
Originally Posted by tlwjkw
Well, well well, this is very interesting.... After I have taken a look again and taken some pictures.. for your "viewing pleasure" :)Quote:
Originally Posted by tlwjkw
Take a look at these pictures: I am pretty sure I mounted it as it was when I got the engine (I marked it with a sharpie before dissasembling, you may see it in pictures)
Left hand side (from front of engine) of the carbs: Attachment 537084
Right hand side of the carbs: Attachment 537085
If I understand what you write correctly, the hoses that goes into the solenoid are mixed up? bottom to top and vice versa? Attachment 537086
And the "T" goes to the top carb, not the bottom: Attachment 537087 Attachment 537088 Which again, as has been said, points to the carbs being mounted in the "wrong order" from top to bottom.
So lot of things are mixed up here.. hose routing from the enrichment circuit into the solenoid, the bowl thats fitted to each carb, and the carb themselves, (except the middle one) are mixed up...
Am I understanding this correctly?
If so, sorry to ask again from you all, but do we believe previous owner(s) simply mixed it all up, or might they have had a reason for shifting them around? It just seems so strange to me to make so many mistakes... and they would have to shift the fuel hose inlet around as well to get the correct angle for the fuel hose unless its supposed to take a loop around... unless I am thinking incorrectly.
Cheers everybody.
Nothing more to say than: Wow! :cheers:Quote:
Originally Posted by rock
You definitely have the carbs on wrong. Looks like the bottom carb should be the top one and the bowl from the one on top now needs to be switched over to keep that barb up top. The enrichment is gravity-feed essentially so the top carb won't be getting much. You will only be "enrichening" the middle carb which will make starting cold hard. The fuel inlets are threaded so you can spin them to align how you need to, but be careful you don't break the long fitting or crack the carb where it threads in. The stamping on the carbs should tell you 1 2 and 3 for which belongs in which place.
For example:
WH 46 1
WH 46 2
WH 46 3
Where WH 46 1 is the only one without an enrichener barb and it goes on top. 2 middle, 3 bottom.
sounds and from what i can guess with what i can make out in tha pictures that tha top bowl got put on tha bottom carb then installed on top... if that makes any sense???.. does tha bottom carb (tha way its installed right now in tha pictures) have any kinda bib at all either on tha flange and/or tha bottom of tha bowl???
this is what to look for:
top carb.... ONE bib on bottom of bowl
center....... One bib, "T" on top middle of flange
bottom..... One bib, single barb, top middle of flange
The only check valves in the fuel system are in the fuel pump, the manual primer bulb and the antisiphon valve. Fuel cannot siphon back out of the fuel bowl. Disconnect the fuel lines from the carburetors. Pump the manual primer bulb to see if fuel comes out of the lines. If it does your floats are stuck. The top carb is definitely #1, Mid #2, Bottom #3. Looks to me like you switched the fuel bowls on the top and bottom carbs. Take them back off switch the float bowls. While they are off, you can check the floats for proper operation. Put a clean piece of fuel line on the carb and blow through it with your mouth while turning the carb upside down. You should be able to blow through with the carb right side up. not upside down.
ThisQuote:
Originally Posted by tlwjkw
Yes, it certainly would appear they are on in the wrong order, and some parts mixed up.Quote:
Originally Posted by 25two.stroke
Somewhat gravity fed enrichment for fuel would make sense, I always thought it was strange the way that hose went....
I will try to be careful when re-aligning the fuel inlets.
Thanks and cheers!
Yes, it appears thats exactly whats going on, on top of them changing the hose routing as well.Quote:
Originally Posted by tlwjkw
I took these further pictures to confirm thats exactly it:
As of current mounting (same as when I got the engine 8 years ago):
Top of top mounted carb: Attachment 537098
Top of center carb/bottom of top carb: Attachment 537099
Bottom of center carb/top of lower carb:Attachment 537102
Bottom of bottom mounted carb: Attachment 537101
So this would seem to confirm it. Strange but true.
In any case: Thanks again!
Thanks. I doubt the floats are stuck though, since they moves so nicely when I had the carbs apart and there is not a single speck of dust/grime etc to be seen, but maybe it can happen anyway. I will check, for sure.Quote:
Originally Posted by skialot2
Well *I* :p didnt switch the bowls/carbs/hoses, but it sure seems like one of the previous owners did. But your point is well taken.
All good ideas for testing, I must say. Much appreciated.
Cheers mate!
Thanks for helping out since the start.Quote:
Originally Posted by rock
I must say, this fuel delivery/fuel pump issue seems to have turned out to be a bit of a blessing in disguise... The engine has always been quite hard to cold start, ever since I got it, and it still got fuel from the hose/pump ok. Never knew exactly why.
If the fuel enricher was only partially functional, that would certainly explain it. Since it seemed to run pretty well when it well started though, I didnt think much of it.
I find it unlikely I would have ever, or at least in the near future, would have thought about the carbs and associated parts being in the wrong order if you guys wouldnt have mentioned it.... Just wouldnt have crossed my mind really.
Well done to everyone for helping out.
Cheers mates.
tha enrichment circuit doesn't effect tha way it runs.. jus tha way ya start it cold.................
Hi!. Thanks for your continued posting and help, its been very appreciated. Though in this last reply you made, I think you must have misunderstood my previous post, I am saying exactly the same as you are in it :) But I see how one can think I meant the enrichment circuit runs well enough and influences the other parts from how I wrote that bit...Quote:
Originally Posted by tlwjkw
I meant that since the only part that didnt run well (as far as I could tell) was the starting part, I didnt put the energy into sort the starting issue fully. It started fine after cranking for a while, so I thought it might have been a wrongly adjusted cable to the foot throttle or something similar. Since I got this boat 8 years ago, I have never ran it more than a few short test runs. And after It didnt start anymore because of lack of fuel from the fuel pump most likely, I let it be, since I hadnt got the time to tinker with it anyways.
Now I hopefully got more time availible to finish the project as I envisioned it from the start, luckily!
Hi everybody thats seen this thread and perhaps vaguely remember it....
Unfortunately I have not-so-great news. Since "rock" very kindly sent me the package with spare parts I needed I have been waiting.... and waiting... and... you get it.
Since it was almost november last year I figured with all the holidays and christmas season and whatever coming up it got a bit delayed. And then it disappeared from the package tracking altogheter. Since I never had a package getting lost I thought they would get on it after all the holidays were over. No, not really. Since february I had tried to contact USPS myself but that proved close to impossible since I am not the one who sent the package as well as not residing within US...
So I tried to contact "rock" about this but this forum runs terribly slow and unstable for me and keeps crashing in my browser time after time and eating my posts before they can be sent.. anyone else thats got this problem? So my messeges didnt reach him. It is what is is.
But now we are in july....
I have found a part number for a complete jet kit (Par tnumber 1395-6201A1), not just the 1 I need and I figured I might as well by that one, maybe its easier to get ahold of here.... getting parts is very hard. I waited 6 months for a fuel pump rebuild kit but it never arrived, and its my understanding they used the same fuel pump on lots of old engines.
As we have talked about earlier in the thread my motor appears to be a 1986 model (Engine serial 0A960307). It uses carbs stamped with "WH31" so must be WH31 carbs, surely?
Anyway, the jets that were mounted in the carbs on my engine were .76 and .78. The jet kit I found uses 0.80 and .82s. It does say its supposed to be for the Wh31s though. Any ideas why this discrepancy? I doubt anyone switched all the jets out but maybe.....
Why would they have done so, in that case? Trying to eke out a bit more power since they felt it was running too rich? Its not very warm here where I am at, (Northern europe) I would say it stops at 80F mostly, so I doubt they changed because of hotter weather than the US? Eleveation also isnt extreme.. few lakes are more than 1000 ft above sea level. Any theories if they have switched jets to smaller, why?
Could .80s and 82s actually be better in some regard, and the switch, if it was from factory, happened for some other reasons such as enviromental emissions, fuel consumption etc?
Cheers mates. I hope to get this old girl running again as soon as possible now that I have a week or two to properly look into it again.
-AAAANd of course the forum crashed again. Luckily I have now learnt to type my replied into a text document and when I finished typing the post paste it into the reply section, or this would lead to a lot of frustration. Lets try again….