|
Mark Erdos
Miles,
A couple of
thoughts:
Are the engine
mounts in good condition? (asking this based on the issue of noise or knocking
sound when running shaft alternator)
Did the problem
begin after you last filled up with fuel? If so, you may have bad fuel.
Do you have a good
flow of fuel all the way from the tank to the injectors (checking filters, joints
for leakage, etc all along the fuel path)
Have you bled
the system to eliminate air?
With best
regards,
Mark
Skipper
Sailing Vessel
- Cream Puff - SM2K - #275
Currently
cruising - Santa Marta, Colombia
www.creampuff.us
From:
amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Wednesday, January 2, 2019 12:58 PM
To: amelyachtowners@...
Subject: [Amel Yacht Owners] Rough engine at idle
Hello fellow amelians
In the canaries our engine purred nicely
When we arrived in the Cape Verde’s it was a little rough on idle
On first running since the roughish Atlantic crossing (40-45kts during last 5
days) its even rougher still
I have a Perkins m65 with around 3k hours
It starts on the button but vibrates lots until the revs are increased.
Would be great to hear thoughts on any simple things I could try. I don’t think
I can adjust the idle speed on the engine. Perhaps I could via the throttle
cable but don’t want to make matters worse.
I’ve bled the fuel
I’m currently in Barbados where I can’t seem to find a diesel mechanic
Next stop Martinique where I’m sure I’ll find good professional
We ran the prop shaft alternator on the long crossing for 2 weeks straight. I
started to notice that in the higher winds towards the end of the trip the
noise from the rotating prop would change to a less regular sound at speed -
almost a knocking sound
I think perhaps the prop shaft alignment needs adjusting. Perhaps the two
issues are related although if so I’d imagine the vibrations to get worse with
increased revs rather than get better
Any thoughts most appreciated and any pointers to good mechanics in Martinique
would be great too
All the very best
Miles
|
|
|
Hi Miles,
We had a problem that sounds similar and yet different from yours -- a vibration above 2000 rpm that got worse with higher revs. I suspected the engine alignment, and was proven right as soon as we had a mechanic look at in in Le Marin. He replaced the engine mounts, C drive mounts, and Vetus coupling rubber bits. It's smoother than ever now. I was very happy with his work. The mechanic's name is Didier, and his number is +596 696 81 57 22.
Ryan and Kelly SM 233 Iteration Portsmouth, Dominica
Miles,
A couple of
thoughts:
Are the engine
mounts in good condition? (asking this based on the issue of noise or knocking
sound when running shaft alternator)
Did the problem
begin after you last filled up with fuel? If so, you may have bad fuel.
Do you have a good
flow of fuel all the way from the tank to the injectors (checking filters, joints
for leakage, etc all along the fuel path)
Have you bled
the system to eliminate air?
With best
regards,
Mark
Skipper
Sailing Vessel
- Cream Puff - SM2K - #275
Currently
cruising - Santa Marta, Colombia
www.creampuff.us
Hello fellow amelians
In the canaries our engine purred nicely
When we arrived in the Cape Verde’s it was a little rough on idle
On first running since the roughish Atlantic crossing (40-45kts during last 5
days) its even rougher still
I have a Perkins m65 with around 3k hours
It starts on the button but vibrates lots until the revs are increased.
Would be great to hear thoughts on any simple things I could try. I don’t think
I can adjust the idle speed on the engine. Perhaps I could via the throttle
cable but don’t want to make matters worse.
I’ve bled the fuel
I’m currently in Barbados where I can’t seem to find a diesel mechanic
Next stop Martinique where I’m sure I’ll find good professional
We ran the prop shaft alternator on the long crossing for 2 weeks straight. I
started to notice that in the higher winds towards the end of the trip the
noise from the rotating prop would change to a less regular sound at speed -
almost a knocking sound
I think perhaps the prop shaft alignment needs adjusting. Perhaps the two
issues are related although if so I’d imagine the vibrations to get worse with
increased revs rather than get better
Any thoughts most appreciated and any pointers to good mechanics in Martinique
would be great too
All the very best
Miles
|
|
|
Thanks Mark I’ll check the engine mounts. Looking at the prop shaft when in gear today there does seem to be a slight misalignment by eye. I had the cutlass bearing replaced in the canaries so perhaps alignment has been out but somehow got worse via the engine mounts movement etc after prolonged free running of the prop shaft at speed on the long passage. There was also LOTS of weed on the passage. A boat we are travelling with seems to have issues with their prop after weed fouling on the trip so perhaps we also were fouled whilst running the prop shaft alternator hard which has exacerbated a prop shaft alignment issue.
Hmmm
I’ve bled the system but only up to the injector pump. I am rather ignorant about how air might cause rough running. Perhaps if the air was just in one of the high pressure fuel lines to a single cylinder ? Wonder if this would get worse not better on higher revs.
I’ll also chase the fuel line as you mention to see if there is any obvious signs of problems at unions etc.
The last fuel we took on was in the canaries. Only about 50L. We don’t use much really but that which we did take on in a few places in the canaries always seemed ok and always had lots of throughput at the pumps with all the other boats. I treat with a biocide too but I could have a look at the fuel just in case.
I also have a switchable double canister off engine primary fuel filter. I tried switching that to the new unused filter and the problem remained unchanged.
Many thanks again for the helpful thoughts. Very much appreciated
All the best
Miles
On 2 Jan 2019, at 15:00, 'Mark Erdos' mcerdos@... [amelyachtowners] < amelyachtowners@...> wrote:
Miles,
A couple of
thoughts:
Are the engine
mounts in good condition? (asking this based on the issue of noise or knocking
sound when running shaft alternator)
Did the problem
begin after you last filled up with fuel? If so, you may have bad fuel.
Do you have a good
flow of fuel all the way from the tank to the injectors (checking filters, joints
for leakage, etc all along the fuel path)
Have you bled
the system to eliminate air?
With best
regards,
Mark
Skipper
Sailing Vessel
- Cream Puff - SM2K - #275
Currently
cruising - Santa Marta, Colombia
www.creampuff.us
Hello fellow amelians
In the canaries our engine purred nicely
When we arrived in the Cape Verde’s it was a little rough on idle
On first running since the roughish Atlantic crossing (40-45kts during last 5
days) its even rougher still
I have a Perkins m65 with around 3k hours
It starts on the button but vibrates lots until the revs are increased.
Would be great to hear thoughts on any simple things I could try. I don’t think
I can adjust the idle speed on the engine. Perhaps I could via the throttle
cable but don’t want to make matters worse.
I’ve bled the fuel
I’m currently in Barbados where I can’t seem to find a diesel mechanic
Next stop Martinique where I’m sure I’ll find good professional
We ran the prop shaft alternator on the long crossing for 2 weeks straight. I
started to notice that in the higher winds towards the end of the trip the
noise from the rotating prop would change to a less regular sound at speed -
almost a knocking sound
I think perhaps the prop shaft alignment needs adjusting. Perhaps the two
issues are related although if so I’d imagine the vibrations to get worse with
increased revs rather than get better
Any thoughts most appreciated and any pointers to good mechanics in Martinique
would be great too
All the very best
Miles
|
|
|
Hi Mark, You mentioned cutlass bearing. What model Amel do you have? Fair Winds Eric Kimberlite Amel Super Maramu #376
From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Wednesday, January 02, 2019 7:56 PM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] Rough engine at idle Thanks Mark I’ll check the engine mounts. Looking at the prop shaft when in gear today there does seem to be a slight misalignment by eye. I had the cutlass bearing replaced in the canaries so perhaps alignment has been out but somehow got worse via the engine mounts movement etc after prolonged free running of the prop shaft at speed on the long passage. There was also LOTS of weed on the passage. A boat we are travelling with seems to have issues with their prop after weed fouling on the trip so perhaps we also were fouled whilst running the prop shaft alternator hard which has exacerbated a prop shaft alignment issue. I’ve bled the system but only up to the injector pump. I am rather ignorant about how air might cause rough running. Perhaps if the air was just in one of the high pressure fuel lines to a single cylinder ? Wonder if this would get worse not better on higher revs. I’ll also chase the fuel line as you mention to see if there is any obvious signs of problems at unions etc. The last fuel we took on was in the canaries. Only about 50L. We don’t use much really but that which we did take on in a few places in the canaries always seemed ok and always had lots of throughput at the pumps with all the other boats. I treat with a biocide too but I could have a look at the fuel just in case. I also have a switchable double canister off engine primary fuel filter. I tried switching that to the new unused filter and the problem remained unchanged. Many thanks again for the helpful thoughts. Very much appreciated Miles, A couple of thoughts: Are the engine mounts in good condition? (asking this based on the issue of noise or knocking sound when running shaft alternator) Did the problem begin after you last filled up with fuel? If so, you may have bad fuel. Do you have a good flow of fuel all the way from the tank to the injectors (checking filters, joints for leakage, etc all along the fuel path) Have you bled the system to eliminate air? With best regards, Mark Skipper Sailing Vessel - Cream Puff - SM2K - #275 Currently cruising - Santa Marta, Colombia www.creampuff.us Hello fellow amelians
In the canaries our engine purred nicely
When we arrived in the Cape Verde’s it was a little rough on idle
On first running since the roughish Atlantic crossing (40-45kts during last 5 days) its even rougher still
I have a Perkins m65 with around 3k hours
It starts on the button but vibrates lots until the revs are increased.
Would be great to hear thoughts on any simple things I could try. I don’t think I can adjust the idle speed on the engine. Perhaps I could via the throttle cable but don’t want to make matters worse.
I’ve bled the fuel
I’m currently in Barbados where I can’t seem to find a diesel mechanic
Next stop Martinique where I’m sure I’ll find good professional
We ran the prop shaft alternator on the long crossing for 2 weeks straight. I started to notice that in the higher winds towards the end of the trip the noise from the rotating prop would change to a less regular sound at speed - almost a knocking sound
I think perhaps the prop shaft alignment needs adjusting. Perhaps the two issues are related although if so I’d imagine the vibrations to get worse with increased revs rather than get better
Any thoughts most appreciated and any pointers to good mechanics in Martinique would be great too
All the very best
Miles
|
|
|
Hi there mike It’s an older Maramu 46 All the best
On 2 Jan 2019, at 22:42, 'sailormon' kimberlite@... [amelyachtowners] < amelyachtowners@...> wrote:
Hi Mark, You mentioned cutlass bearing. What model Amel do you have? Fair Winds Eric Kimberlite Amel Super Maramu #376 Thanks Mark I’ll check the engine mounts. Looking at the prop shaft when in gear today there does seem to be a slight misalignment by eye. I had the cutlass bearing replaced in the canaries so perhaps alignment has been out but somehow got worse via the engine mounts movement etc after prolonged free running of the prop shaft at speed on the long passage. There was also LOTS of weed on the passage. A boat we are travelling with seems to have issues with their prop after weed fouling on the trip so perhaps we also were fouled whilst running the prop shaft alternator hard which has exacerbated a prop shaft alignment issue. I’ve bled the system but only up to the injector pump. I am rather ignorant about how air might cause rough running. Perhaps if the air was just in one of the high pressure fuel lines to a single cylinder ? Wonder if this would get worse not better on higher revs. I’ll also chase the fuel line as you mention to see if there is any obvious signs of problems at unions etc. The last fuel we took on was in the canaries. Only about 50L. We don’t use much really but that which we did take on in a few places in the canaries always seemed ok and always had lots of throughput at the pumps with all the other boats. I treat with a biocide too but I could have a look at the fuel just in case. I also have a switchable double canister off engine primary fuel filter. I tried switching that to the new unused filter and the problem remained unchanged. Many thanks again for the helpful thoughts. Very much appreciated Miles, A couple of thoughts: Are the engine mounts in good condition? (asking this based on the issue of noise or knocking sound when running shaft alternator) Did the problem begin after you last filled up with fuel? If so, you may have bad fuel. Do you have a good flow of fuel all the way from the tank to the injectors (checking filters, joints for leakage, etc all along the fuel path) Have you bled the system to eliminate air? With best regards, Mark Skipper Sailing Vessel - Cream Puff - SM2K - #275 Currently cruising - Santa Marta, Colombia www.creampuff.us Hello fellow amelians
In the canaries our engine purred nicely
When we arrived in the Cape Verde’s it was a little rough on idle
On first running since the roughish Atlantic crossing (40-45kts during last 5 days) its even rougher still
I have a Perkins m65 with around 3k hours
It starts on the button but vibrates lots until the revs are increased.
Would be great to hear thoughts on any simple things I could try. I don’t think I can adjust the idle speed on the engine. Perhaps I could via the throttle cable but don’t want to make matters worse.
I’ve bled the fuel
I’m currently in Barbados where I can’t seem to find a diesel mechanic
Next stop Martinique where I’m sure I’ll find good professional
We ran the prop shaft alternator on the long crossing for 2 weeks straight. I started to notice that in the higher winds towards the end of the trip the noise from the rotating prop would change to a less regular sound at speed - almost a knocking sound
I think perhaps the prop shaft alignment needs adjusting. Perhaps the two issues are related although if so I’d imagine the vibrations to get worse with increased revs rather than get better
Any thoughts most appreciated and any pointers to good mechanics in Martinique would be great too
All the very best
Miles
|
|
|
Mark Erdos
Miles,
I mentioned the
engine mounts first because I really think this is going to be the cause.
Keep in mind
that anything fuel related normally effects the engine regardless of the RPM.
However, it is harder to notice fuel deficiency at higher RPMs. It is easier to
troubleshoot fuel issue when a load is put on the engine (smoke or lack of
power).
With best
regards,
Mark
Skipper
Sailing Vessel
- Cream Puff - SM2K - #275
Currently
cruising - Santa Marta, Colombia
www.creampuff.us
From:
amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Wednesday, January 2, 2019 8:56 PM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] Rough engine at idle
Thanks Mark
I’ll check the engine mounts. Looking at the prop shaft when
in gear today there does seem to be a slight misalignment by eye.
I had the cutlass bearing replaced in the canaries so
perhaps alignment has been out but somehow got worse via the engine mounts
movement etc after prolonged free running of the prop shaft at speed on the
long passage.
There was also LOTS of weed on the passage. A boat we are
travelling with seems to have issues with their prop after weed fouling on the
trip so perhaps we also were fouled whilst running the prop shaft alternator
hard which has exacerbated a prop shaft alignment issue.
I’ve bled the system but only up to the injector pump. I am
rather ignorant about how air might cause rough running. Perhaps if the air was
just in one of the high pressure fuel lines to a single cylinder ? Wonder if
this would get worse not better on higher revs.
I’ll also chase the fuel line as you mention to see if there
is any obvious signs of problems at unions etc.
The last fuel we took on was in the canaries. Only about
50L. We don’t use much really but that which we did take on in a few places in
the canaries always seemed ok and always had lots of throughput at the pumps with
all the other boats. I treat with a biocide too but I could have a look at the
fuel just in case.
I also have a switchable double canister off engine primary
fuel filter. I tried switching that to the new unused filter and the problem
remained unchanged.
Many thanks again for the helpful thoughts. Very much
appreciated
toggle quoted messageShow quoted text
On 2 Jan 2019, at 15:00, 'Mark Erdos' mcerdos@...
[amelyachtowners] < amelyachtowners@...>
wrote:
Miles,
A couple of thoughts:
Are the engine mounts in good condition?
(asking this based on the issue of noise or knocking sound when running shaft
alternator)
Did the problem begin after you last
filled up with fuel? If so, you may have bad fuel.
Do you have a good flow of fuel all the
way from the tank to the injectors (checking filters, joints for leakage, etc
all along the fuel path)
Have you bled the system to eliminate
air?
With best regards,
Mark
Skipper
Sailing Vessel - Cream Puff - SM2K - #275
Currently cruising - Santa Marta, Colombia
www.creampuff.us
Hello fellow amelians
In the canaries our engine purred nicely
When we arrived in the Cape Verde’s it was a little rough on idle
On first running since the roughish Atlantic crossing (40-45kts during last 5
days) its even rougher still
I have a Perkins m65 with around 3k hours
It starts on the button but vibrates lots until the revs are increased.
Would be great to hear thoughts on any simple things I could try. I don’t think
I can adjust the idle speed on the engine. Perhaps I could via the throttle
cable but don’t want to make matters worse.
I’ve bled the fuel
I’m currently in Barbados where I can’t seem to find a diesel mechanic
Next stop Martinique where I’m sure I’ll find good professional
We ran the prop shaft alternator on the long crossing for 2 weeks straight. I
started to notice that in the higher winds towards the end of the trip the
noise from the rotating prop would change to a less regular sound at speed -
almost a knocking sound
I think perhaps the prop shaft alignment needs adjusting. Perhaps the two
issues are related although if so I’d imagine the vibrations to get worse with
increased revs rather than get better
Any thoughts most appreciated and any pointers to good mechanics in Martinique
would be great too
All the very best
Miles
|
|
|
