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What's this pipe?

PostPosted:Thu May 02, 2019 8:00 pm
by VRB_20kt
I'm just taking the o-200 out of a Super Emeraude. I've removed the carb, but just above its mounting point is a thin pipe that ends up somewhere behind the firewall. Emeraudes don't have a primer - the accelerator pump does the trick, squirting neat fuel into the inlet manifold. Anyone got a clue what the pipe may be for? https://www.dropbox.com/s/f47u63qfixkaaj1/Carb.png?dl=0 (Sorry - I can't get the image to show inline,)

Re: What's this pipe?

PostPosted:Fri May 03, 2019 5:32 pm
by Shoestring Flyer
Manifold Pressure.....Pipe up to gauge on panel?

Re: What's this pipe?

PostPosted:Fri May 03, 2019 7:59 pm
by VRB_20kt
Could be designed for that, but no gauge for MP. I think I'm just going to have to delve - though the point behind the firewall is not particularly easy to access

Re: What's this pipe?

PostPosted:Sat May 04, 2019 3:36 pm
by Flying_john
It is the primer inlet pipe according to the manual.

Re: What's this pipe?

PostPosted:Sat May 04, 2019 9:17 pm
by VRB_20kt
Thanks John. I think I'll have to trace it through. There definitely isn't a primer on this Em so my guess is that I'll find it blanked off. Time will tell.

Re: What's this pipe?

PostPosted:Sun Jun 02, 2019 9:21 pm
by Rob L
It certainly looks like the primer pipe into the intake spider, but it should NOT be rubber. It should be copper. Get a better Inspector.

Re: What's this pipe?

PostPosted:Mon Jun 03, 2019 12:23 am
by VRB_20kt
Thanks Rob. TBH there are bits of rubber pipe in various unexpected places around the engine. I hope to get the panel off shortly so I'll see what's on the other end.

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