Welcome to Carver Yachts Owners Forum
We are a boating forum for owners of Carver Yachts to enthusiastically discuss all aspects of Carver Boat ownership. Whether you are looking for your first Carver or currently own one, you are sure to feel at home on CarverYachtOwners.com
You are currently viewing our board as a guest which gives you limited access to view most discussions, articles and access our other FREE features. By joining our free community you will have access to searching the forum topics, post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
Fuel Filter Count and Location
- bud37
- Admiral
- Posts: 4677
- Joined: April 23rd, 2015, 10:22 pm
- Has thanked: 547 times
- Been thanked: 1143 times
Re: Fuel Filter Count and Location
Good luck with your launch and new tranny....
- chpsk8
- First Mate
- Posts: 163
- Joined: July 2nd, 2018, 10:13 pm
- Vessel Info: 1995 Carver Aft Cabin Motor Yacht... Hull #001
- Has thanked: 27 times
- Been thanked: 70 times
Re: Fuel Filter Count and Location
We launched and did a full throttle test run to test the trans. The port motor stumbled at anything over 2000.
Tech hooked up a flow meter and we observed a distinct whine for two seconds, and a corresponding dip in fuel pressure, then good for 4 seconds, then down for two.
I have two pumps on each motor. Of course it was the $300 one. Tech ordered what he thought was right, but my pump has a return circuit also, so it has two intakes, one output.
Found the right one and now the problem is solved. Took until July 11 this year to get our first day out on our own boat, but it was worth the efforts.
- Cooler
- Admiral
- Posts: 1555
- Joined: May 22nd, 2018, 12:09 pm
- Vessel Info: 1995 Carver 330 Mariner
Twin 350XL Crusaders
Home port: Menominee, MI - Location: Green Bay, WI
- Has thanked: 66 times
- Been thanked: 368 times
Re: Fuel Filter Count and Location
( All weather people have to say this on air, near lakes )
- g36
- Admiral
- Posts: 1940
- Joined: April 7th, 2014, 6:07 pm
- Vessel Info: 1997 Carver 405
- Location: Soddy Daisy TN.
- Has thanked: 7 times
- Been thanked: 587 times
Re: Fuel Filter Count and Location
Crusader xli
The Black Pearl
Soddy Daisy Tn.
- chpsk8
- First Mate
- Posts: 163
- Joined: July 2nd, 2018, 10:13 pm
- Vessel Info: 1995 Carver Aft Cabin Motor Yacht... Hull #001
- Has thanked: 27 times
- Been thanked: 70 times
Re: Fuel Filter Count and Location
In 2021 I had a loose water separator on the port motor that caused the motor to completely die. It would suck air and die off. I could almost predict when it would happen. 45 minutes of run time, then it would die, but could be started immediately. Found the water separator was loose. Tightened it up, and no problem.
Fast forward to this spring. I launched and could barely get the port motor to start. This is the same motor that I replaced the primary fuel pump in 2020 and had the loose water separator in 2021. So frustration is high at this point. We fiddled around a little and it started and was able to run at 1800rpm in the slip without problems. So the next day we took off up the Mississippi. About an hour into the trip we come up on the stern of a barge. The river is narrow so we have to wait for the right spot to pass. We had been motoring around at 1700 rpm and about 9 mph. I throttled up to pass and sure enough... the port motor dies off like it's fuel starved again. I tried one more time about a mile up the river and it died again. Not wanting to get in front of a barge and have a problem we just sat behind it for the next 8 miles... at 4.5mph. Safety first! Kids not happy.
After many hours of staring at the fuel system and going over what I've changed and not changed I decided to research the little "lift" pump that takes fuel from the tank and pushes it to the main fuel pump on the front of the motor. That little pump is a Walbro FRB-20. Turns out that pump has a filter inside of it that needs to be cleaned! I took it apart last night and it was pretty much 100% clogged. So that pump was starving the primary pump which in turn caused the primary pump to fail. The bad news is the primary pump is now whining again so I'm sure I've damaged it in some way and shortened it's life.
Now I need to figure out how to clean the filter on the starboard motor. I don't fit in the front space in front of the motor so I need to find a small person that can help.
I'll leave some links here that might help someone in the future.
The primary pump I used in the original problem that started this thread.
https://marineenginedepot.com/fuel-pump-high-pressure-gm-pump-with-return?gclid=EAIaIQobChMI1az52rWi6gIVDNvACh0vLgIwEAQYAiABEgJ0TPD_BwE
An option that another user here found that needs a little modification to the harness to work. (move the plug to the other side of the pump) much much cheaper.
https://theropshop.com/shop/products/electric-fuel-pump-marine-power-438603-ra080023-556017
The Walbro FRB-20 pump that is being used as a lift pump in advance of the primary pump.
https://walbrofuelpumps.com/frb-20.html
The wow moment when I cleaned the filter in the Walbro FRB-20
- km1125
- Admiral
- Posts: 3342
- Joined: February 28th, 2017, 6:04 pm
- Has thanked: 57 times
- Been thanked: 968 times
Re: Fuel Filter Count and Location
-
- CYO Supporter
- Posts: 5803
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 431 times
- Been thanked: 1586 times
Re: Fuel Filter Count and Location
- Midnightsun
- CYO Supporter
- Posts: 2838
- Joined: March 27th, 2016, 2:27 pm
- Vessel Info: The Midnight Sun
2007 41CMY
Volvo D6-370's - Location: Montreal, Canada
- Has thanked: 254 times
- Been thanked: 1095 times
Re: Fuel Filter Count and Location
Thanks for the update/solution.
- chpsk8
- First Mate
- Posts: 163
- Joined: July 2nd, 2018, 10:13 pm
- Vessel Info: 1995 Carver Aft Cabin Motor Yacht... Hull #001
- Has thanked: 27 times
- Been thanked: 70 times
Re: Fuel Filter Count and Location
#Viper... Any tips on making those hard pipe connections seal? I'm fairly mechanically inclined. It was bit of a disappointment I couldn't get it to seal myself. Seemed like no matter what angle I put things on, or how tight I tightened it, I would always get a drip out of at least one connection.
#midnightsun... I agree with your point on the filter so early in the process. It's a 70 micron filter. I asked the previous owner who had the boat for 11 years and he said he had never changed it. The original owner wasn't that great with maintenance so we're thinking it's never been cracked open before.
- km1125
- Admiral
- Posts: 3342
- Joined: February 28th, 2017, 6:04 pm
- Has thanked: 57 times
- Been thanked: 968 times
Re: Fuel Filter Count and Location
chpsk8 wrote:Source of the post ...
I asked the previous owner who had the boat for 11 years and he said he had never changed it. The original owner wasn't that great with maintenance so we're thinking it's never been cracked open before.
Glad you clarified that part. I was going to ask if this was just one year of accumulation or from a much longer time.
Return to “Gas Engines/Transmissions”
Who is online
Users browsing this forum: No registered users and 24 guests