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Forum: Messages

11-16-19, 09:30 AM

Replies: 25

Rear engine fuel drains

Views: 18,922

Posted By n86121

Smoking gun found....I hope

"Once you have eliminated the most likely, the least likely becomes most likely"

(Paraphrasing Sherlock Holmes)

So,

1. NOT flow divider: $500

2. NOT fuel check return valve: $300.
Found...

Forum: Messages

11-09-19, 03:15 PM

Replies: 25

Rear engine fuel drains

Views: 18,922

Posted By n86121

saga continues

I popped the fuel primer line off. That's not it.

It would appear there are only two paths for fuel into cylinders when shut down:
1. Primer and /
2. sump/pump/throttle/flow divider shutoff.

I...

Forum: Messages

11-08-19, 12:43 PM

Replies: 25

Rear engine fuel drains

Views: 18,922

Posted By n86121

Great sadness - still drips

Am beginning to think the OH flow divider not OH so well.....?

Forum: Messages

11-06-19, 01:03 PM

Replies: 25

Rear engine fuel drains

Views: 18,922

Posted By n86121

VICTORY - Blessed are the Maintenance Gods

It looks like we finally got it: Like most complex things, simple once understood.

Turned out to be just the check valve beneath the fuel pump, against the rear firewall.
Facing DOWN from the fuel...

Forum: Messages

10-27-19, 11:29 AM

Replies: 25

Rear engine fuel drains

Views: 18,922

Posted By n86121

Interesting... I bought an OVERHAULED flow...

Interesting...

I bought an OVERHAULED flow divider from QAA.COM ($450 as I recall).

So assume it was done correctly. But you never know.

I still have the flow divider came out. I think it is...

Forum: Messages

10-24-19, 06:02 PM

Replies: 25

Rear engine fuel drains

Views: 18,922

Posted By n86121

Found mine Little red devil in front of rear oil...

Found mine
Little red devil in front of rear oil cooler, oriented vertically
arrow down, into airframe (and I assume back to manifold and tanks)
Same?

Pulled, cleaned,
did a light sun n blow...

Forum: Messages

10-23-19, 09:07 PM

Replies: 25

Rear engine fuel drains

Views: 18,922

Posted By n86121

Still dripping

Looked up parts diagram and list
-40 check valve pump to manifold.
Will check that out.

Makes sense.

From the drawing
the check valve appears near / under the elec boost pump
In Engine compartment...

Forum: Messages

10-23-19, 03:00 PM

Replies: 25

Rear engine fuel drains

Views: 18,922

Posted By n86121

Updated rear cowl drain map

I think I have them all traced correctly now.
Believe it or not, many transition to firesleeved hoses so it is a bit confusing!
Retracing a bowl of red spaghetti backwards from each end.

When...

Forum: Messages

10-04-19, 05:12 PM

Replies: 25

Rear engine fuel drains

Views: 18,922

Posted By n86121

So far

1=
2 = pilot side cylinder drain
3 = pssgr side cylinder drain
4 = eng fuel pump drain
5 = elec fuel pump drain
6 =
7 = oil breather - relocated

Forum: Messages

10-02-19, 10:57 AM

Replies: 25

Rear engine fuel drains

Views: 18,922

Posted By n86121

Rear engine fuel drains

1. Can anyone identify the various drain lines as below?

When topped off I have a steady drip from #2, at least.

If I can find some time will follow the lines up to wherever they go, but I thought...

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