I have a
Yanmar 2gm20 raw water cooled
engine which has an anti siphon hose connected between where the
water comes out of the
engine and where it enters the
exhaust elbow. When I start the engine this hose puffs a fair bit of
exhaust gas and sometimes a bit of
water squirts out. This is annoying because the smell of the exhaust gas isn't too pleasant inside the
boat.
This has only occurred since installing a new water-lock
muffler and the engine is taking a bit more to get it started than prior. I had to mount the
muffler in a slightly different position to the previous one so the exhaust hose to the muffler is slightly longer.
I hope this is not a sign the engine is being harmed with this new set up and any suggestions how to stop the puff of exhaust out of the anti siphon hose would be great.