Home |
Search |
Today's Posts |
#1
|
|||
|
|||
115 mercury reed valves
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
|
|||
|
|||
115 mercury reed valves
There is no breather. Tired reeds will cause a some spit back through the carbs as described. Unless you have any BROKEN reeds , tired reeds will mostly only affect the idle. I think you need to make sure the carbs are set up correctly 1st. Start with the idle screws 2 1/2 turns out and set them from there as per the manual. If the carbs are truely rebuilt they should NOT be dripping gas unless the motor is tilted up or your are squeezing the ball real hard to force gas past the float needles to "pre-flood" it for easier starting. You ought to take it to a mechanic that knows the inline 6 well. I say 90/10 odds your problem is not reeds. -W You practically have to flood an inline six to cold start it. "kozmo6969" wrote in message om... (kozmo6969) wrote in message . com... 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 this is a inline 6, three carbs. when testing the reeds, do i hold the cardboard in front of the carbs? this has no breather i don't think. i know that i am getting gas dripping out of carbs. if it is reeds, is this worth replacing them, and has anybody replaced reeds on this motor? any tricks? thanks |
#3
|
|||
|
|||
115 mercury reed valves
|
#4
|
|||
|
|||
115 mercury reed valves
"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 |
#5
|
|||
|
|||
115 mercury reed valves
"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
|
|||
|
|||
115 mercury reed valves
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 |
#7
|
|||
|
|||
115 mercury reed valves
|
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
115 mercury reed valves | General | |||
Mercury outboards have delicate carbs? | General | |||
Lake X to close. :( | General | |||
Mercury outboard carburetors | General | |||
Mercury alleges dumping by Japanese mfgs? | General |