I’m troubleshooting an overheating issue on my 1991 XP with the 587 engine. The pisser out the back looks weak, but I am not sure what normal looks like on these old skis. When I remove the hoses from the exhaust pipe and the head, the pisser streams are about 2–3 inches at idle and 3 feet when revved). The ski only overheats on long runs over 30 minutes or so. Is there a flow rate for this test?
Also, more importantly, is there a flow rate measurements from the cooling water discharge hose that exits the head and goes into the exhaust at the through-hull fitting?
I’m trying to determine whether my issue is a restriction in the cooling passages or something else, and having a baseline “normal” flow rate would help me confirm if water flow is the problem.
If I am looking at this completely backwards just let me know how I should proceed with an over heating diagnosis...Thanks
Also, more importantly, is there a flow rate measurements from the cooling water discharge hose that exits the head and goes into the exhaust at the through-hull fitting?
I’m trying to determine whether my issue is a restriction in the cooling passages or something else, and having a baseline “normal” flow rate would help me confirm if water flow is the problem.
If I am looking at this completely backwards just let me know how I should proceed with an over heating diagnosis...Thanks
