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  #1  
Old 03-31-2019, 01:23 PM
N941WR's Avatar
N941WR N941WR is offline
 
Join Date: Jan 2005
Location: SC
Posts: 12,887
Default Condition Inspection Findings

It has been over 11 years since I first flew my RV-9.

In that time I have changed the engine (O-290 to O-360) due to a prop strike. Last year I found a crack on my engine mount and replaced that.

I started my Condition Inspection on Friday night and so far so good. Compression on all four Cylinders are normal. Last year #3 was low and I was using oil like crazy. Just recently I noticed my oil consumption was back to normal and sure enough, the sparkplugs were all dry and the compression was back to "normal".

Last year I replaced the O-ring on the gascolator and lubricated it with fuel lube, which I would always do. This year I removed the unused plug on the gascolator and it pulled right off.

After the gascolator was reinstalled I decided to "bleed" the fuel pressure line. Over the past year I would get low fuel pressure warnings on my EFIS and have replaced the wire, sensor, etc. and it would still come back on occasion but once the engine warmed up, it would go away and not come back on. Also, even though it would read 1 PSI in a full power climb, the engine never sagged, so I know it was getting plenty of fuel.

So, this morning I turned on the electric fuel pump and started loosing the plug on the "manifold" that holds the fuel pressure sensor until fuel started coming out. I was surprised at how long it took for fuel to come streaming out, once it first bubbled. With fuel leaking out, I tightened the plug back up and then turned off the fuel pump and master.

I will report back, once I'm flying again to let you know if this solved my low fuel pressure readings.
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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  #2  
Old 03-31-2019, 05:24 PM
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N941WR N941WR is offline
 
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Location: SC
Posts: 12,887
Default

FWF, less brakes and wheels is complete.

The only maintenance issue is I will have to replace one of the neoprene tubes to connect my plenum to the Sam James cowl.

Regardless if you have a taildragger or nosewheel, please remember to put a torque wrench on the gear leg nuts (wrench on the bolt.) And make sure they are tight.

One thing I did years ago was to replace every nylock nut with metal locknuts FWF. Especially on the brakes, these can get surprisingly hot and start working their way off.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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  #3  
Old 03-31-2019, 06:55 PM
molson309 molson309 is offline
 
Join Date: Jul 2009
Location: Longmont, CO
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Default

Quote:
Originally Posted by N941WR View Post
It has been over 11 years since I first flew my RV-9.

In that time I have changed the engine (O-290 to O-360) due to a prop strike. Last year I found a crack on my engine mount and replaced that.

..snip..

After the gascolator was reinstalled I decided to "bleed" the fuel pressure line. ..snip..
Please be careful here - air in the fuel pressure line is highly unlikely to be the cause of low fuel pressure alerts. You may actually _have_ low fuel pressure, perhaps plumbing in a temporary mechanical pressure gauge would be a good way to figure out if you have an instrumentation problem or a real issue.
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RV-7A First flight 2005 Sold 2019
F1-EVO Rocket First flight 2010
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  #4  
Old 03-31-2019, 07:04 PM
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N941WR N941WR is offline
 
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Location: SC
Posts: 12,887
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Quote:
Originally Posted by molson309 View Post
Please be careful here - air in the fuel pressure line is highly unlikely to be the cause of low fuel pressure alerts. You may actually _have_ low fuel pressure, perhaps plumbing in a temporary mechanical pressure gauge would be a good way to figure out if you have an instrumentation problem or a real issue.
If it was a pump issue, the long taxi I have to the end of the runway, along with waiting for the temps to come up, would have exhausted the fuel in the carb about halfway to the end of the runway. (I tested it once withe fuel valve turned off because I wanted to see if I was ever at risk of taking off with the valve in the off position and I'm not even close.)

No, I don't think it is the fuel pump but if blessing the line doesn't solve it, the only thing left is to replace the fuel pump.

No fuel has gone overboard via the drain line, so I know the pump's diaphragm is not compromised.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html

Last edited by N941WR : 03-31-2019 at 07:09 PM.
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  #5  
Old 04-01-2019, 10:17 AM
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flyabq flyabq is offline
 
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Location: BELLA VISTA
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Default Question

Sorry, Not a condition inspection question. I am also in process of building a 9. How are you liking the o-360? If you had to do it again would you still use that engine?
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  #6  
Old 04-01-2019, 10:45 AM
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Pilot135pd Pilot135pd is offline
 
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Location: Vaca Moo Airport - TA37 in East TEXAS
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Quote:
Originally Posted by flyabq View Post
Sorry, Not a condition inspection question. I am also in process of building a 9. How are you liking the o-360? If you had to do it again would you still use that engine?
Best engine bang for your buck when you also take into consideration low maintenance issues. I've had them on many of the aircraft I've owned.
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Sadly sold my RV-8 however still trying to enjoy life by living on my airport with FREE campsites for pilots to enjoy www.facebook.com/VacaMooAirport/ & flying my OnSpeed equipped C-177 while waiting for the RV15 !

Exempt by 3 out of the 10 ways but I still donated.
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  #7  
Old 04-01-2019, 10:57 AM
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flyabq flyabq is offline
 
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I love the engine. I just know Van's position on the 360 on the 9, and I am wanting to put one on when I finally get the Fuselage done. I am trying to decide on that and the 320.
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  #8  
Old 04-01-2019, 11:57 AM
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Pilot135pd Pilot135pd is offline
 
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Location: Vaca Moo Airport - TA37 in East TEXAS
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Quote:
Originally Posted by flyabq View Post
I love the engine. I just know Van's position on the 360 on the 9, and I am wanting to put one on when I finally get the Fuselage done. I am trying to decide on that and the 320.
My comment is based on the engine on airframes designed for the engine. I don't know anything about putting a 360 on a RV-9, plus I'm not an aeronautical engineer or a test pilot so I always defer those kinds of decisions to the people who design the airplane.
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Sadly sold my RV-8 however still trying to enjoy life by living on my airport with FREE campsites for pilots to enjoy www.facebook.com/VacaMooAirport/ & flying my OnSpeed equipped C-177 while waiting for the RV15 !

Exempt by 3 out of the 10 ways but I still donated.
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  #9  
Old 04-01-2019, 12:29 PM
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N941WR N941WR is offline
 
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Location: SC
Posts: 12,887
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Quote:
Originally Posted by flyabq View Post
Sorry, Not a condition inspection question. I am also in process of building a 9. How are you liking the o-360? If you had to do it again would you still use that engine?
First, Van's does not recommend this engine for the -9. This was been discussed many times in this forum. Try using the Advanced Search function.

The 360 is about 20 pounds heavier than the 320. I have a fixed pitch Catto prop, so my combined weight is less than a 320 with a fixed pich metal prop. If you ever want a CS prop, it should be a composite prop.

Remember, the -9 is limited to a GW of 1750, you will have to build extremely light and not go crazy with needless options, like a flap position sensor, backup batteries, alternators, BRS, etc.

With those limitations, I am very pleased with it and don't cruise at 75% power because it will drink fuel at that setting. Typical cruise for me is 150 to 160 knots while burning between 5.2 and 7.2 GPH, Depending on altitude, leaning, TAS, etc.
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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  #10  
Old 04-11-2019, 09:11 PM
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N941WR N941WR is offline
 
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Location: SC
Posts: 12,887
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Condition inspection completed and logbooks signed.

The only thing that needed to be replaced was the right side neoprene tube that goes from the aluminum inlet to the cooling plenum on my Sam James cowl.

With the two engine runs I performed, the fuel pressure was perfect. So, bleeding the fuel pressure line may have solved that annoying issue. I won't know until I fly it. That may have to wait until next weekend as we are supposed to get three days of rain here in the upstate of South Carolina.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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