journey on
New member
I’m posting this for both information and comment. Whichever you prefer.
Journey On has a 2005 Honda 150 with 365 hours, and three big summers of travel. By the way, it’s counter-rotating, just to mention that. This/last summer I noticed that the mileage went down form ~3 mpg to 2 mpg, at the same time gas went from $3/gal to $4/gal, which was not a good thing. No change in prop, loading or our usual cruise speed. Luckily our trip to San Francisco wasn’t much on gas, but the problem had to be fixed.
I just got back from Oceanside Marine, the nearest Honda dealer, where a very competent tech, Dwight, ran a computer scan/test on THE motor. He reported that #3 injector wasn’t injecting, the fuel pressure regulator wasn’t regulating, and the MAP sensors weren’t sensing. This all added up to a screwed engine. The cause, he felt, was twofold: The injector and regulator had water contamination from bad gas. The MAP (Manifold Atmospheric Pressure, the intake manifold pressure,) was choked with salt debris from running in salt water; i.e., the salt laden air deposited salt. There are 2 ea MAP sensors. The feeling is that Honda EFI doesn’t like salt water, though Honda doesn’t agree. Does say something for carburetors.
Basically the remedy was to replace the parts, which I can do whilst Journey On is on the trailer. The estimate for the parts cost was ~$300, which works out to about $100/year. Not too bad, but none of the items are covered under warranty, since they’re salt and water related. Dwight felt I could clean the #2 MAP sensor, and the throttle body. Which is good, since that MAP thingey is $77. I did change the fuel filters once per year: the boat filter, the water separator filter and the high pressure pump filter. I did get one batch of bad gas, at the ARCO station just north of the Columbia River on I-5, which I feel was a random incident, but that was >2 years ago. Also we do go to some of the out of the way places, and in Spanish, Ontario, Canada, you buy gas at the only station, or you don’t buy gas. Most of our trips have been in salt water.
The recommendation also was to replace the water pump impeller and KEY every 2 years, if in salt water.
As I said above, this is just for info, since there are a lot of 135/150 EFI Honda engines out there. Also, for those of us that think a 150 is big, it’s referred to as the SMALL engine. That said, please feel free to comment.
Boris
Journey On has a 2005 Honda 150 with 365 hours, and three big summers of travel. By the way, it’s counter-rotating, just to mention that. This/last summer I noticed that the mileage went down form ~3 mpg to 2 mpg, at the same time gas went from $3/gal to $4/gal, which was not a good thing. No change in prop, loading or our usual cruise speed. Luckily our trip to San Francisco wasn’t much on gas, but the problem had to be fixed.
I just got back from Oceanside Marine, the nearest Honda dealer, where a very competent tech, Dwight, ran a computer scan/test on THE motor. He reported that #3 injector wasn’t injecting, the fuel pressure regulator wasn’t regulating, and the MAP sensors weren’t sensing. This all added up to a screwed engine. The cause, he felt, was twofold: The injector and regulator had water contamination from bad gas. The MAP (Manifold Atmospheric Pressure, the intake manifold pressure,) was choked with salt debris from running in salt water; i.e., the salt laden air deposited salt. There are 2 ea MAP sensors. The feeling is that Honda EFI doesn’t like salt water, though Honda doesn’t agree. Does say something for carburetors.
Basically the remedy was to replace the parts, which I can do whilst Journey On is on the trailer. The estimate for the parts cost was ~$300, which works out to about $100/year. Not too bad, but none of the items are covered under warranty, since they’re salt and water related. Dwight felt I could clean the #2 MAP sensor, and the throttle body. Which is good, since that MAP thingey is $77. I did change the fuel filters once per year: the boat filter, the water separator filter and the high pressure pump filter. I did get one batch of bad gas, at the ARCO station just north of the Columbia River on I-5, which I feel was a random incident, but that was >2 years ago. Also we do go to some of the out of the way places, and in Spanish, Ontario, Canada, you buy gas at the only station, or you don’t buy gas. Most of our trips have been in salt water.
The recommendation also was to replace the water pump impeller and KEY every 2 years, if in salt water.
As I said above, this is just for info, since there are a lot of 135/150 EFI Honda engines out there. Also, for those of us that think a 150 is big, it’s referred to as the SMALL engine. That said, please feel free to comment.
Boris