beav350
NAXJA Forum User
- Location
- Lapeenranta, Finland via CA, USA
A general diesel behavior question...
My 2 cylinder, 1 liter, 25 year old Volvo Penta Houseboat motor developed a hard starting problem this summer, during a week long somewhat colder spell. I used a little ether to get it going a few times, and I know, not really smart but it was needed. The odd part is that if allowed to reach operating temperature and shut down, if I tried a hot restart, it would crank fine but not fire. Eventually it would not fire at all. I added oil to the air intake, and it would fire, but still not run after shut down. Of course the 1st thing I think is the rings are bad, so I tear it down. Everything looks fine, rings, pistons, heads and so on. Obviously I have a compression problem, I think adding the oil raised the compression enough to fire despite the rings being fine. With the engine in pieces, where should I look now? Valves and head gasket are fine too. 1 wierd thing, is I can rotate the flywheel way too easily, like as if it had no compression at all, like a stuck open valve, but thats not the case. Could this no-run when hot things be an indicator?
My 2 cylinder, 1 liter, 25 year old Volvo Penta Houseboat motor developed a hard starting problem this summer, during a week long somewhat colder spell. I used a little ether to get it going a few times, and I know, not really smart but it was needed. The odd part is that if allowed to reach operating temperature and shut down, if I tried a hot restart, it would crank fine but not fire. Eventually it would not fire at all. I added oil to the air intake, and it would fire, but still not run after shut down. Of course the 1st thing I think is the rings are bad, so I tear it down. Everything looks fine, rings, pistons, heads and so on. Obviously I have a compression problem, I think adding the oil raised the compression enough to fire despite the rings being fine. With the engine in pieces, where should I look now? Valves and head gasket are fine too. 1 wierd thing, is I can rotate the flywheel way too easily, like as if it had no compression at all, like a stuck open valve, but thats not the case. Could this no-run when hot things be an indicator?
