I fix things, amongst those a great many boats, too many boats..
as long as there is salt water, and fuel, I have work..
something completely new here, a 28ft bayliner, with two volvo b23 engines, think they are called AQ131A's paired with a set of volvo 275 drives.
I have fixed many of these engines in cars, and know my way around them.
Anyhow, a new boat owner, inexperienced, first time takes the boat out, 3 mile trip in the SF bay, windy scary wavy day., 30 knots winds, 8ft waves. comes back, all white, one dead engine, wife ready for divorce..or murder.- his problem-.
Now my problem, cranking reveals just that, it cranks OK, but salt water comes out of the carburator ( 4 foot fountain), no water in engine oil, salt water in cylinder head however. coolant level OK. No overheating signs, or damage. all rubber, and exhaust OK.
Pulled exhaust, no obvious disasters, but it seems very unlikely an exhaust failure causes an absolute engine shut down during operation. under power.
And now for the strange odd piece of info, the timing belt has skipped 45 degrees, and the timing belt has severe damage, all teeth are eaten up.. never ever have seen this.
I assume the cam locked up, or jackshaft, but suspect cam more. Engine moves freely now.( including cam)
I will ask this customer tomorrow if he has any idea what happened( if he remembers..), I personally think he cut power from full to idle in a following sea, causing a exhaust vacuum to suck in water into the engine, which indeed will cause an immedeate shutdown, plus salt water in the intake, and cylinders. Hydrolocked basically, but .. could this cause a problem for the cam? maybe the locking cylinders disallowed a valve from entering the combustion room, and consequentely locking a cam?
Gimmy a hand here..
as long as there is salt water, and fuel, I have work..
something completely new here, a 28ft bayliner, with two volvo b23 engines, think they are called AQ131A's paired with a set of volvo 275 drives.
I have fixed many of these engines in cars, and know my way around them.
Anyhow, a new boat owner, inexperienced, first time takes the boat out, 3 mile trip in the SF bay, windy scary wavy day., 30 knots winds, 8ft waves. comes back, all white, one dead engine, wife ready for divorce..or murder.- his problem-.
Now my problem, cranking reveals just that, it cranks OK, but salt water comes out of the carburator ( 4 foot fountain), no water in engine oil, salt water in cylinder head however. coolant level OK. No overheating signs, or damage. all rubber, and exhaust OK.
Pulled exhaust, no obvious disasters, but it seems very unlikely an exhaust failure causes an absolute engine shut down during operation. under power.
And now for the strange odd piece of info, the timing belt has skipped 45 degrees, and the timing belt has severe damage, all teeth are eaten up.. never ever have seen this.
I assume the cam locked up, or jackshaft, but suspect cam more. Engine moves freely now.( including cam)
I will ask this customer tomorrow if he has any idea what happened( if he remembers..), I personally think he cut power from full to idle in a following sea, causing a exhaust vacuum to suck in water into the engine, which indeed will cause an immedeate shutdown, plus salt water in the intake, and cylinders. Hydrolocked basically, but .. could this cause a problem for the cam? maybe the locking cylinders disallowed a valve from entering the combustion room, and consequentely locking a cam?
Gimmy a hand here..
