Suenos Azules Marine Surveying and Consulting

10/25/2026

A badly corroded O2 sensor from a MerCruiser 6.2 liter engine. Was causing intermittent communication with the PCM and the code kept re-appearing when cleared.

Capt. John Banister, AMS®
Suenos Azules Marine Surveying and Consulting
4521 PGA Boulevard, Suite 461
Palm Beach Gardens, Florida 33418
SAMS® Accredited Marine Surveyor
ABYC® Standards Accredited
ABYC® Gasoline Engines Technician Certified
Yamaha Certified Outboard Marine Technician
Mercury Certified Outboard Engine Technician
Mercury Certified V12 Outboard Engine Technician
Honda Certified Outboard Engine Technician
USPAP® Certificate on Appraisal Standards
ITC® Certified Level III Master Thermographer
USCG Licensed Master Captain
Member SAMS®, ABYC®, IAMI®, & NFPA®
(561) 255-4139
www.SuenosAzules.com

10/21/2026

An article I wrote on Mercury Verado V12 outboard engine inspections and surveys.

https://suenosazulesmarinesurveying.wordpress.com/2026/10/21/mercury-verado-v12-and-other-large-outboard-engine-surveys-and-inspections/

Mercury Verado V12 and Other Large Outboard Engine Surveys and Inspections – Suenos Azules Marine Surveying and Consulting

10/20/2026

The difference that proper active infrared thermal imaging makes (done correctly, with a high definition thermal camera, and according to the Infraspection Standards). It removes all doubt about the condition of the fiberglass or engine that the naked eye can not see.

More about my infrared thermal imaging services is at my website:

https://suenosazules.com/infrared-thermal-imaging/

Capt. John Banister, AMS®
Suenos Azules Marine Surveying and Consulting
4521 PGA Boulevard, Suite 461
Palm Beach Gardens, Florida 33418
SAMS® Accredited Marine Surveyor
ABYC® Standards Accredited
ABYC® Gasoline Engines Technician Certified
Yamaha Certified Outboard Marine Technician
Mercury Certified Outboard Engine Technician
Mercury Certified V12 Outboard Engine Technician
Honda Certified Outboard Engine Technician
USPAP® Certificate on Appraisal Standards
ITC® Certified Level III Master Thermographer
USCG Licensed Master Captain
Member SAMS®, ABYC®, IAMI®, & NFPA®
(561) 255-4139
www.SuenosAzules.com

10/14/2026

What pressure testing a Yamaha lower unit looks like and finding a leaking shift shaft seal.

https://www.youtube.com/watch?v=AzeGn3qD57I

This is what pressure testing a lower unit is when verifying that s...

09/18/2026

Triple Mercury V12 outboard engine survey in Stuart, Florida.

09/17/2026

This is a video of an outboard engine survey of triple Mercury Verado V12, 7.6 liter, 600 horsepower outboard engines conducted in Stuart, Florida. This videos goes through some of the steps and testing of the Mercury V12 outboard engines. Come see more about my outboard engine surveying and services at:

https://www.SuenosAzules.com

Capt. John Banister, AMS
Certified Mercury V12 Outboard Engine Technician

09/09/2026

Checking for proper ARO (Advanced Range Optimization) using the CDS G3 diagnostics computer during a sea trial on twin Mercury V10 5.7 liter 400 HP outboard engines.

ARO is a Mercury exclusive software based feature which actively increases fuel economy under specific operating conditions. ARO becomes active automatically based on a specific RPM range and when certain load conditions are present (a lean burn control state that begins to occur when spark advances when increasing throttle and load). This occurs automatically in the outboard engine and can only be seen with the CDS G3 diagnostics computer.

Once the outboard engines reach near wide open throttle, demand, demand linear, and demand linear with guardian will read 100%. If all of those fields reach 100% at near wide open throttle, ARO is working properly. ARO is also a good way to confirm the outboard engines are equipped with proper propellers that are not under pitched or over pitched.

Capt. John Banister, AMS®
Suenos Azules Marine Surveying and Consulting
4521 PGA Boulevard, Suite 461
Palm Beach Gardens, Florida 33418
SAMS® Accredited Marine Surveyor
ABYC® Standards Accredited
ABYC® Gasoline Engines Technician Certified
Yamaha Certified Outboard Marine Technician
Mercury Certified Outboard Engine Technician
Mercury Certified V12 Outboard Engine Technician
Honda Certified Outboard Engine Technician
USPAP® Certificate on Appraisal Standards
ITC® Certified Level III Master Thermographer
USCG Licensed Master Captain
Member SAMS®, ABYC®, IAMI®, & NFPA®
(561) 255-4139
www.SuenosAzules.com

09/02/2026

A video of an outboard engine survey of triple Mercury Verado V12 600 HP outboard engines in Key Largo, Florida.

Capt. John Banister, AMS®
Suenos Azules Marine Surveying and Consulting
4521 PGA Boulevard, Suite 461
Palm Beach Gardens, Florida 33418
SAMS® Accredited Marine Surveyor
ABYC® Standards Accredited
ABYC® Gasoline Engines Technician Certified
Yamaha Certified Outboard Marine Technician
Mercury Certified Outboard Engine Technician
Mercury Certified V12 Outboard Engine Technician
Honda Certified Outboard Engine Technician
USPAP® Certificate on Appraisal Standards
ITC® Certified Level III Master Thermographer
USCG Licensed Master Captain
Member SAMS®, ABYC®, IAMI®, & NFPA®
(561) 255-4139

https://youtu.be/iIt3z4oUgrg

This is an outboard engine survey and sea trial on triple Mercury, ...

08/12/2026

Quad Yamaha XTO Offshore V8 425 HP outboard engine assessment for re-power consideration on a 42' Pursuit center console.

Capt. John Banister, AMS®
Suenos Azules Marine Surveying and Consulting
4521 PGA Boulevard, Suite 461
Palm Beach Gardens, Florida 33418
SAMS® Accredited Marine Surveyor
ABYC® Standards Accredited
ABYC® Gasoline Engines Technician Certified
Yamaha Certified Outboard Marine Technician
Mercury Certified Outboard Engine Technician
Mercury Certified V12 Outboard Engine Technician
Honda Certified Outboard Engine Technician
USPAP® Certificate on Appraisal Standards
ITC® Certified Level III Master Thermographer
USCG Licensed Master Captain
Member SAMS®, ABYC®, IAMI®, & NFPA®
(561) 255-4139
www.SuenosAzules.com

07/13/2026

Solar loading is never a good option when conducting infrared thermal imaging on fiberglass hulls. A lot would be missed. Broad heat used on the laminates, how that heat is applied, and the delay in the imaging as thermal conduction is taking place are the ways to see into the laminates and core. This article is on par with how the work is done properly.

https://irinfo.org/articles/infrared-thermography-in-marine-laminate-inspections-the-problem-with-solar-loading

Capt. John Banister, AMS®
Suenos Azules Marine Surveying and Consulting
4521 PGA Boulevard, Suite 461
Palm Beach Gardens, Florida 33418
SAMS® Accredited Marine Surveyor
ABYC® Standards Accredited
ABYC® Gasoline Engines Technician Certified
Yamaha Certified Outboard Marine Technician
Mercury Certified Outboard Engine Technician
Mercury Certified V12 Outboard Engine Technician
Honda Certified Outboard Engine Technician
USPAP® Certificate on Appraisal Standards
ITC® Certified Level III Master Thermographer
USCG Licensed Master Captain
Member SAMS®, ABYC®, IAMI®, & NFPA®
(561) 255-4139