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0470 fuel manifold leaking

Posted: Fri Nov 18, 2016 4:28 pm
by Boattrash55
I have a fuel injected 0470 I just noticed a small amount of fuel seeping out when running I'm assuming it's not normal any thoughts what it might be? Just bought this boat new to aircraft engines.

Re: 0470 fuel manifold leaking

Posted: Mon Nov 21, 2016 9:36 am
by twister69z
Leaking from where?

Re: 0470 fuel manifold leaking

Posted: Mon Nov 21, 2016 1:08 pm
by Boattrash55
From the fuel manifold there's like a little peep hole it seeps out of but the hole is supposed to be there.

Re: 0470 fuel manifold leaking

Posted: Mon Nov 21, 2016 3:08 pm
by twister69z
The diaphragm has a pin hole in it , needs replacing.
Twister69z

Re: 0470 fuel manifold leaking

Posted: Mon Nov 21, 2016 3:31 pm
by Boattrash55
This is what's leaking.

Re: 0470 fuel manifold leaking

Posted: Mon Nov 21, 2016 5:02 pm
by twister69z
Yep dried out and has a pin hole in it . Not hard to fix just need a few special tools to fix it.

Re: 0470 fuel manifold leaking

Posted: Mon Nov 21, 2016 6:01 pm
by Boattrash55
What causes that to happen and what do I need to fix it?

Re: 0470 fuel manifold leaking

Posted: Tue Nov 22, 2016 10:26 pm
by twister69z
Just a new diaphragm and we teat them on a flow bench to make sure they shut off clean.
Twister69z

Re: 0470 fuel manifold leaking

Posted: Wed Nov 23, 2016 3:14 pm
by whee
Check this link to see what the inside of the manifold valve looks like. Pretty simple in there.

https://www.flickr.com/gp/100657243@N02/16KXm4

Re: 0470 fuel manifold leaking

Posted: Wed Nov 23, 2016 7:13 pm
by Boattrash55
Ok so the hole on the housing is supposed to be there but since the diaphragm is messed it's allowing fuel to pass by and leak out?

Re: 0470 fuel manifold leaking

Posted: Wed Nov 23, 2016 7:54 pm
by whee
Boattrash55 wrote:Ok so the hole on the housing is supposed to be there but since the diaphragm is messed it's allowing fuel to pass by and leak out?
Yep

Re: 0470 fuel manifold leaking

Posted: Wed Nov 23, 2016 7:59 pm
by Boattrash55
Ok thanks I'll call tom at Schmidt on Monday and see if I can get what I need to fix it thanks guys.

Re: 0470 fuel manifold leaking

Posted: Mon Nov 28, 2016 10:20 am
by Boattrash55
Where can I get the parts close to west palm? I'm having a hard time getting ahold of people at schmidts but it is just after thanksgiving.

Re: 0470 fuel manifold leaking

Posted: Thu Dec 01, 2016 7:32 am
by jaysmiths
Aircraft Spruce has the part you need, $47 or so a few months ago. Takes five minutes to put it in.
I believe they call it a "fuel manifold diaphragm"

Re: 0470 fuel manifold leaking

Posted: Thu Dec 01, 2016 7:44 am
by Boattrash55
Ran down to schmidts on Tuesday and tom took care of it for me ready to ride for the weekend!

Re: 0470 fuel manifold leaking

Posted: Fri Dec 02, 2016 2:20 pm
by flcracker9
Tom is a super nice guy, always helpful to the airboatering community, glad to hear it's resolved.
Kevin