0470 fuel manifold leaking

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Boattrash55
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Location: Loxahatchee,FL

0470 fuel manifold leaking

Post by Boattrash55 » Fri Nov 18, 2016 4:28 pm

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.
12x6 Al David fuel injected 0470 260hp 72" water walker

twister69z
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Re: 0470 fuel manifold leaking

Post by twister69z » Mon Nov 21, 2016 9:36 am

Leaking from where?
If you don't have time to do it right the first time ,
Where are you going to get the time to do it a second time?

Boattrash55
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Posts: 46
Joined: Tue Aug 25, 2015 7:47 am
Location: Loxahatchee,FL

Re: 0470 fuel manifold leaking

Post by Boattrash55 » Mon Nov 21, 2016 1:08 pm

From the fuel manifold there's like a little peep hole it seeps out of but the hole is supposed to be there.
12x6 Al David fuel injected 0470 260hp 72" water walker

twister69z
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Re: 0470 fuel manifold leaking

Post by twister69z » Mon Nov 21, 2016 3:08 pm

The diaphragm has a pin hole in it , needs replacing.
Twister69z
If you don't have time to do it right the first time ,
Where are you going to get the time to do it a second time?

Boattrash55
Southern Airboat Member
Posts: 46
Joined: Tue Aug 25, 2015 7:47 am
Location: Loxahatchee,FL

Re: 0470 fuel manifold leaking

Post by Boattrash55 » Mon Nov 21, 2016 3:31 pm

This is what's leaking.
Attachments
image.jpeg
image.jpeg
This is what's leaking
12x6 Al David fuel injected 0470 260hp 72" water walker

twister69z
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Re: 0470 fuel manifold leaking

Post by twister69z » Mon Nov 21, 2016 5:02 pm

Yep dried out and has a pin hole in it . Not hard to fix just need a few special tools to fix it.
If you don't have time to do it right the first time ,
Where are you going to get the time to do it a second time?

Boattrash55
Southern Airboat Member
Posts: 46
Joined: Tue Aug 25, 2015 7:47 am
Location: Loxahatchee,FL

Re: 0470 fuel manifold leaking

Post by Boattrash55 » Mon Nov 21, 2016 6:01 pm

What causes that to happen and what do I need to fix it?
12x6 Al David fuel injected 0470 260hp 72" water walker

twister69z
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Re: 0470 fuel manifold leaking

Post by twister69z » Tue Nov 22, 2016 10:26 pm

Just a new diaphragm and we teat them on a flow bench to make sure they shut off clean.
Twister69z
If you don't have time to do it right the first time ,
Where are you going to get the time to do it a second time?

whee
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Joined: Fri May 27, 2016 2:38 pm

Re: 0470 fuel manifold leaking

Post by whee » Wed Nov 23, 2016 3:14 pm

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

Boattrash55
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Joined: Tue Aug 25, 2015 7:47 am
Location: Loxahatchee,FL

Re: 0470 fuel manifold leaking

Post by Boattrash55 » Wed Nov 23, 2016 7:13 pm

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?
12x6 Al David fuel injected 0470 260hp 72" water walker

whee
Southern Airboat Member
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Joined: Fri May 27, 2016 2:38 pm

Re: 0470 fuel manifold leaking

Post by whee » Wed Nov 23, 2016 7:54 pm

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

Boattrash55
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Posts: 46
Joined: Tue Aug 25, 2015 7:47 am
Location: Loxahatchee,FL

Re: 0470 fuel manifold leaking

Post by Boattrash55 » Wed Nov 23, 2016 7:59 pm

Ok thanks I'll call tom at Schmidt on Monday and see if I can get what I need to fix it thanks guys.
12x6 Al David fuel injected 0470 260hp 72" water walker

Boattrash55
Southern Airboat Member
Posts: 46
Joined: Tue Aug 25, 2015 7:47 am
Location: Loxahatchee,FL

Re: 0470 fuel manifold leaking

Post by Boattrash55 » Mon Nov 28, 2016 10:20 am

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.
12x6 Al David fuel injected 0470 260hp 72" water walker

jaysmiths
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Re: 0470 fuel manifold leaking

Post by jaysmiths » Thu Dec 01, 2016 7:32 am

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"

Boattrash55
Southern Airboat Member
Posts: 46
Joined: Tue Aug 25, 2015 7:47 am
Location: Loxahatchee,FL

Re: 0470 fuel manifold leaking

Post by Boattrash55 » Thu Dec 01, 2016 7:44 am

Ran down to schmidts on Tuesday and tom took care of it for me ready to ride for the weekend!
12x6 Al David fuel injected 0470 260hp 72" water walker

flcracker9
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Re: 0470 fuel manifold leaking

Post by flcracker9 » Fri Dec 02, 2016 2:20 pm

Tom is a super nice guy, always helpful to the airboatering community, glad to hear it's resolved.
Kevin
12' Open Palm Beach, IO-0470-L 260hp, 72" NGQ

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