ckuhtz
New Member
- Oct 6, 2019
- 16
- Boat Info
- 185 Sport
- Engines
- 262 Mercruiser w/ Alpha I Gen 2 Drive
Hey guys,
I have been chasing a gremlin since the end of last season and could use a pointer or two for the cause of this issue. Going to try to give you as much info as I can, including a video of two occurrences.
First time of the season that I started the boat today. It would not fire first try by just turning the key on idle as expected. Two pumps with throttle lever and the engine started right up as expected. Warmed the engine up for several minutes. During that time ran the engine at idle, 2k rpm, 3k rpm 4k rpm, with no issues. Ran like a charm.
Then once warmed up, the symptoms start. It stalls about ~15 seconds after starting pretty consistently when in this state.
I recorded two instances in my driveway, one with throttle at idle and one advanced to the first "detent" (~2k rpm). The throttle wasn't touched after being set before the stall. The key was turned back to ignition, then start, and was not completely removed.
Video of two start attempts ending in stalls:
At the end of last season, I saw the behavior also manifest as stalling at 3-4k rpm for several minutes and then being almost impossible to refire. Spraying carb cleaner into the carb, I could sometimes get it to light, but then it would stall. Eventually, it'd refire, and I could limp it back to the dock.
No other symptoms. Fuel filters (canister and then inline filter) have been replaced several times with no change. Fuel is clean non-ethanol with stabil marine. Battery charge is good (new battery on maintainer). The plugs are newish. The Spark arrestor is clean. Correct fresh oil. Last year, the oil pressure fuel shut-off switch was replaced with a genuine one, with no change and as a no-regrets preventative.
The engine has 175 hours and is unmolested to the best of my knowledge.
Thanks,
Christian
I have been chasing a gremlin since the end of last season and could use a pointer or two for the cause of this issue. Going to try to give you as much info as I can, including a video of two occurrences.
First time of the season that I started the boat today. It would not fire first try by just turning the key on idle as expected. Two pumps with throttle lever and the engine started right up as expected. Warmed the engine up for several minutes. During that time ran the engine at idle, 2k rpm, 3k rpm 4k rpm, with no issues. Ran like a charm.
Then once warmed up, the symptoms start. It stalls about ~15 seconds after starting pretty consistently when in this state.
I recorded two instances in my driveway, one with throttle at idle and one advanced to the first "detent" (~2k rpm). The throttle wasn't touched after being set before the stall. The key was turned back to ignition, then start, and was not completely removed.
Video of two start attempts ending in stalls:
At the end of last season, I saw the behavior also manifest as stalling at 3-4k rpm for several minutes and then being almost impossible to refire. Spraying carb cleaner into the carb, I could sometimes get it to light, but then it would stall. Eventually, it'd refire, and I could limp it back to the dock.
No other symptoms. Fuel filters (canister and then inline filter) have been replaced several times with no change. Fuel is clean non-ethanol with stabil marine. Battery charge is good (new battery on maintainer). The plugs are newish. The Spark arrestor is clean. Correct fresh oil. Last year, the oil pressure fuel shut-off switch was replaced with a genuine one, with no change and as a no-regrets preventative.
The engine has 175 hours and is unmolested to the best of my knowledge.
Thanks,
Christian