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#1
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any help on checking reed valves, is this an easy check. i have a 115
that i was told possable bad reed valves. i do not beleave that but would like to be sure before tearing down. i think fuel problem. good compression all close to 120lb. rebuilt carbs, new fuel pump diaphram, and water pump. motor hard starting, dies when in water after take off, problem restarting. any help here????? thanks koz |
#2
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#3
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![]() "kozmo6969" wrote in message om... motor hard starting, dies when in water after take off, problem restarting. any help here????? thanks koz Can you elaborate on "dies when in water after take off" ?? If the motor dies when it is running at some significant speed then the problem is not going to be the reeds. The reeds are the valves that prevent the gas/air mixture in the crankcase from going back out the carburetors. Ideally,. the reeds lay flat against the reed plate and form a perfect seal. As the reeds get old, however, they tend to pick up a bit of a bend and/or warp. This allows them to leak a substantial amount. This is usually a problem only at idle. At higher RPMs, the amount of leak is less noticeable and the higher pressures tend to force the reed closed. If the engine was running OK at some RPM, there is little that a reed could do that would cause it to just die. Hard starting, poor idle and hesitation when accelerating is likely to be reeds. On some engines changing the reeds is a trivial task. On other engines you have to take so much stuff off that it becomes a nightmare. If you can get to them without too much effort I would just change them to eliminate one source of problems. Rod |
#4
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"Rod McInnis" wrote in message ...
"kozmo6969" wrote in message om... motor hard starting, dies when in water after take off, problem restarting. any help here????? thanks koz Can you elaborate on "dies when in water after take off" ?? If the motor dies when it is running at some significant speed then the problem is not going to be the reeds. The reeds are the valves that prevent the gas/air mixture in the crankcase from going back out the carburetors. Ideally,. the reeds lay flat against the reed plate and form a perfect seal. As the reeds get old, however, they tend to pick up a bit of a bend and/or warp. This allows them to leak a substantial amount. This is usually a problem only at idle. At higher RPMs, the amount of leak is less noticeable and the higher pressures tend to force the reed closed. If the engine was running OK at some RPM, there is little that a reed could do that would cause it to just die. Hard starting, poor idle and hesitation when accelerating is likely to be reeds. On some engines changing the reeds is a trivial task. On other engines you have to take so much stuff off that it becomes a nightmare. If you can get to them without too much effort I would just change them to eliminate one source of problems. Rod i got it running rod, disconnected the fuel tank, ran a new line into a fresh can of gas, hit it with a shot of starting fluid, and it ran, and ran good. idled great.and would restart right back up. so i think that i have bad gas in the 30 year old tank.so now i have to flush it out. and it still starts very hard when cold. the true test is on the lake. the last time i got it running in the driveway it ran good, took it to the lake, and could not keep it running. it would start very hard, then when hit wot it would stall. so i hape i found my problem, the carbs do not drip fuel when it runs, and it sounds good. think i found my problem, now i hope to make it start eaiser. thanks, koz |
#5
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An easy test of the carbs is when your get it on water and get to running at
about 3000 rpms engage the choke. 1. Increases rpms - carbs are bad and running lean 2. Decreases rpms - everything should be ok or you have an ignition problem. 3. Does nothing - you have a bad choke or you have a fuel starvation problem. -- Tony my boats at http://t.thomas.home.mchsi.com "kozmo6969" wrote in message om... "Rod McInnis" wrote in message ... "kozmo6969" wrote in message om... motor hard starting, dies when in water after take off, problem restarting. any help here????? thanks koz Can you elaborate on "dies when in water after take off" ?? If the motor dies when it is running at some significant speed then the problem is not going to be the reeds. The reeds are the valves that prevent the gas/air mixture in the crankcase from going back out the carburetors. Ideally,. the reeds lay flat against the reed plate and form a perfect seal. As the reeds get old, however, they tend to pick up a bit of a bend and/or warp. This allows them to leak a substantial amount. This is usually a problem only at idle. At higher RPMs, the amount of leak is less noticeable and the higher pressures tend to force the reed closed. If the engine was running OK at some RPM, there is little that a reed could do that would cause it to just die. Hard starting, poor idle and hesitation when accelerating is likely to be reeds. On some engines changing the reeds is a trivial task. On other engines you have to take so much stuff off that it becomes a nightmare. If you can get to them without too much effort I would just change them to eliminate one source of problems. Rod i got it running rod, disconnected the fuel tank, ran a new line into a fresh can of gas, hit it with a shot of starting fluid, and it ran, and ran good. idled great.and would restart right back up. so i think that i have bad gas in the 30 year old tank.so now i have to flush it out. and it still starts very hard when cold. the true test is on the lake. the last time i got it running in the driveway it ran good, took it to the lake, and could not keep it running. it would start very hard, then when hit wot it would stall. so i hape i found my problem, the carbs do not drip fuel when it runs, and it sounds good. think i found my problem, now i hope to make it start eaiser. thanks, koz |
#6
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