fernley tim
Cadet
- Joined
- Mar 3, 2012
- Messages
- 8
So I've seen two issues with the boat in the last two trips.
Been having trouble getting motor to come off idle, I know the fuel is old, cause I've been out of commission for many months; that said it was treated with Sta-Bil...
Cleaned the carb jets out with a piece of 20# mono, swapped the plugs, they all looked the same, lightish brown, (right heat range) with a touch of fouling on one but not bad, no signs of a down cylinder.
Took it out for a run.
Ran great for about 15-20 minutes, then during a run across the lake, at or around 4000 rpm, just lost power and died. Would not turn over for about 5 minutes, making me think the motor seized. After 5 minutes she fired, but down a bit on power- I had no desire to see what happened at that RPM again so took it easy back to the ramp.
On land, pulled the cowl- saw some milky water on the lower left side, making me think head gasket... Looking up towards the upper area, it looked like it might be a leak around the upper corner gasket on the exhaust cover-
Back home, I pulled the plugs- no brown gunk, all looked the same, no signs of water per se...
Put the muffs on, fired it up and saw a small leak around the hose leading the left side cylinders- shut down, cleaned and reset the hose and clamps, checked again- there was no indication of leakage and at idle she sounded good again. But of course that's not under load and at higher RPM.
So, I dunno... I'm positing that the gasket leak on the exhaust let water into the incoming fuel mix and that caused the shutdown. The lack of oily water on the plugs makes me THINK no head gasket failure.
If that?s it might not be so bad..
If it?s the head gasket, well, you do one gasket, you need to do the other. You do them, ya might as well do the rest on the power head. If you do that it?s a teardown? Hell that?s a powerhead. Saw one on the auction site for 1300 shipped with no warranty? really?
I know I can do a lot of this myself; I do it for a living and have access to the tools and people to do it, although I am rehabbing and this ain?t light work? But, I want to have some faith in the motor, and it?s 26 years old. It was rebuilt by Helmuts marine in 2004- when I got it, there were about 40 hours on the rebuild, since then I?ve done perhaps 300-400 more. I just bought a used tilt trim to add to it, and it hasn?t even arrived yet, so I?m sitting here wondering if it?s time to call it on this one. Thanks for any input.
Been having trouble getting motor to come off idle, I know the fuel is old, cause I've been out of commission for many months; that said it was treated with Sta-Bil...
Cleaned the carb jets out with a piece of 20# mono, swapped the plugs, they all looked the same, lightish brown, (right heat range) with a touch of fouling on one but not bad, no signs of a down cylinder.
Took it out for a run.
Ran great for about 15-20 minutes, then during a run across the lake, at or around 4000 rpm, just lost power and died. Would not turn over for about 5 minutes, making me think the motor seized. After 5 minutes she fired, but down a bit on power- I had no desire to see what happened at that RPM again so took it easy back to the ramp.
On land, pulled the cowl- saw some milky water on the lower left side, making me think head gasket... Looking up towards the upper area, it looked like it might be a leak around the upper corner gasket on the exhaust cover-
Back home, I pulled the plugs- no brown gunk, all looked the same, no signs of water per se...
Put the muffs on, fired it up and saw a small leak around the hose leading the left side cylinders- shut down, cleaned and reset the hose and clamps, checked again- there was no indication of leakage and at idle she sounded good again. But of course that's not under load and at higher RPM.
So, I dunno... I'm positing that the gasket leak on the exhaust let water into the incoming fuel mix and that caused the shutdown. The lack of oily water on the plugs makes me THINK no head gasket failure.
If that?s it might not be so bad..
If it?s the head gasket, well, you do one gasket, you need to do the other. You do them, ya might as well do the rest on the power head. If you do that it?s a teardown? Hell that?s a powerhead. Saw one on the auction site for 1300 shipped with no warranty? really?
I know I can do a lot of this myself; I do it for a living and have access to the tools and people to do it, although I am rehabbing and this ain?t light work? But, I want to have some faith in the motor, and it?s 26 years old. It was rebuilt by Helmuts marine in 2004- when I got it, there were about 40 hours on the rebuild, since then I?ve done perhaps 300-400 more. I just bought a used tilt trim to add to it, and it hasn?t even arrived yet, so I?m sitting here wondering if it?s time to call it on this one. Thanks for any input.