Just had an rpm drop at full power found bad hose on intake tube. by
the way do you have a 337 to remove the mixture and wire it rich?
GlennPutnam
On Jun 18, 2008, at 10:39 AM, Kevin Lee wrote:
Been reading of problem(s) one or more of you have had
in regards to your carburetors.
I'll refer to mine and it's cure.
I had slight RPM drop on couple climb out's and my pucker
factor went way up when it happened. It would drop about 300 rpm's
just as I became airborne around 100-300 feet, to which I would
immediately level it out and with-in a few seconds it would
regain RPM's and ran fine rest of the time
My A&P's inspection of the carb showed no signs of problems when
checked for fuel / float level ect. We also looked at couple of
items such as plugs and mags for weakness. and wires for possible
arc/grounding ect.
My A&P installied new wiring harness / plugs and then also noticed
a clyinder had substainal loss of compression from last check during
it's last annual just couple months prior.
It had stuck/burnt valve, (repaired)
He (A&P) flew it several times after this completed work with no
problems so we thought the problem was corrected.
My A&P returned to my home base with my coupe, than I was going
to fly him back to his.
All intial checks on preflight and run ups were fine.
On climb out, at approx 200' she droped about 300 rpm's AGAIN
We landed with plenty of rumway left thanks to 5000' of pavement
Due to the extra payload it acted up again
He pulled the carb, felt we needed to checked by certified shop
Sent carb up to Rockford IL. Where it was checked prior to being
rebuilt
This was the problem all along as the needle value had neoprene tip,
rebuild shop said that was a big No NO
Neopren tip was swelled, closing off proper fuel flow, It was
restricting fuel flow to .030 Says flow should be .048 minimum
It was having fuel starvation when engine was needing it most.
Stainless tip now in place
*Stromberg (no mixture control) on a C85
Carb rebuild cost $750.00
Coupe now is again flying and runnng great.
Keep the Blue Side Up
Kevin Lee N2583H 46 415C
