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 Post subject: Fuel Blockage? Jet?
PostPosted: Sat Jun 02, 2012 3:41 pm 
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I've nearly got him started.

I haven't lost my genuine "Cush Mechanic" (tm) skills.

This setup should run, shouldn't it?

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At least until the float bowl empties.

But when I use my patented "Dear Engine, I would be ever so grateful if you would commence operating.... ya bastard!"

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The car will start and idle quite nicely, for a few moments and then conk out. If i try some throttle, I occasionally get a little back fire (indicating lean-ness?)

Fuel is getting INTO the float ok, so does this mean there may be a blockage around the jet area? And what should I try next. I have a hammer on standby.

Also, the car has been idle for a while (like years).

Thanks.


Sooo close.. (and it sounds good too :D )

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PostPosted: Sat Jun 02, 2012 4:03 pm 
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Location: near Baulkham Hills, NSW
Does the main jet pipe have a steel spring over it (= genuine jet) or is it a bit of black hose (= a fuel miser rubbish jet)?
The fuel miser ones don't like ethanol, and are not even rated for unleaded, according to Morris 1100 (he queried the manufacturers). They swell & close up.
I had one block up on the 1412 stroker, so I binned it and got a genuine jet.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


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PostPosted: Sat Jun 02, 2012 4:04 pm 
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I see a spring..

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PostPosted: Sat Jun 02, 2012 4:11 pm 
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Blow thru it.... :wink:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


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PostPosted: Sat Jun 02, 2012 4:18 pm 
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That was the plan.

I'm hoping for a carb removal free solution.. :)

Is it supposed to move?

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PostPosted: Sat Jun 02, 2012 4:33 pm 
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Yep, up and down, and the tube should be flexible. If it's all gone hard, bin it.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


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 Post subject:
PostPosted: Sat Jun 02, 2012 4:39 pm 
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tube flexes , but the jet don't move..
I'm seeing if i can slacken/tighten the nut to see if it dislodges something./

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PostPosted: Sat Jun 02, 2012 4:42 pm 
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If you take the Bell & piston out, you can then use something like the outside part of a ball-point pen (you know, take the guts out & just the outer plastic tube part)

place it over the hole in the center of the jet inside the carb & you can blow through it & make pretty bubbles in the float bowl 8)

Now it should be really easy to blow through there & it should make big gurgling bubbles so watch you don`t get any fuel in your eyes 8)

but if you feel any restriction (bar a smidge being that only of the weight of the fuel) then maybe there`s a blockage & "normally" it will be at the "o-ring" inside the bottom of the float bowl, where the jet-hose meets & joins onto the float bowl

whew!!! that`s enough info for now, hope you could understand all what i said 8) 8) 8)

Edit-->

Oh & you can clean inside the bell & the outer of the piston,,, probably filthy as anyways & more-than-likely is your main problem anyways,,, sticky piston will/can also "maybe" cause what you`re saying

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

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PostPosted: Sat Jun 02, 2012 5:38 pm 
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Cheers ,Matt (and Kev)...

I've managed to get some movement back into the jet, but it seems a bit gunky...

And the car started a couple of times for a few seconds without the aid of the fuel sprayed down the throat... but the donor battery (wife's car) was sounding a little tired of cranking.

The mixture ie bound to be way out now too.

I'll give the pen idea ago later.. after I've charged another battery up.

Or ill just get another frigging jet. :)

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PostPosted: Sat Jun 02, 2012 10:01 pm 
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TheMiniMan wrote:
If you take the Bell & piston out, you can then use something like the outside part of a ball-point pen (you know, take the guts out & just the outer plastic tube part)

place it over the hole in the center of the jet inside the carb & you can blow through it & make pretty bubbles in the float bowl 8)


I gave this a shot (once i figured out I wouldn't lose my dashpot oil :P ). Except I used something shaped a bit like a fuel hose. ;)

Filthy bugger.

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And I got bubbles...

BUt the battery isn't charged enough to test it.. *sigh*

Patience.. patience..

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PostPosted: Sat Jun 02, 2012 10:10 pm 
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I see your problem - there is a screwdriver blocking the fuel line... :lol:

Hooroo

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 Post subject:
PostPosted: Sat Jun 02, 2012 10:41 pm 
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There was a moment where I was looking everywhere for that screwdriver.

It took me about 5 minutes to realise.. :roll:

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 Post subject:
PostPosted: Sat Jun 02, 2012 11:42 pm 
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Right, so I managed to get the battery to spin enough,

A couple of successful blows down through the jet and one horrible suck tells me that the fuel has a path from the float to the carb.

And..

http://www.youtube.com/watch?v=IPD7v1oET2Y

nope.

At the end, you hear and see me give two very tiny pokes (with finger) of the accelerator.

But I had another two goes, one with a tug of the choke and one doing nothing and it still conked out.

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 Post subject:
PostPosted: Sun Jun 03, 2012 10:04 am 
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well then,,, it`s probably not a fuel related problem then 8)

check the dizzy out now maybe yeah? :-)

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.


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 Post subject:
PostPosted: Thu Jun 07, 2012 12:54 am 
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It RUNS!

I gave the jet hole a thorough blowing with a syringe and rinsed out the float bowl a few times and away he went....

http://www.youtube.com/watch?v=suqL8eoh9Eg

Then out she came.... eek... it's midnight... :oops:

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