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| Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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06-06-2020, 11:05 AM
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#1 |
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Not Yet Wild
Join Date: Sep 2019
Posts: 8
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no oil getting to valves
was going to adjust valves found out no oil getting to them what could be wrong?is there a hole somewhere by valves that could be plugged or something else?Thanks
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06-07-2020, 10:12 AM
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#2 |
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Searching for The Way
 Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,436
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Re: no oil getting to valves
There should only be a tiny amount of oil getting to the actual valves. When you remove the valve cover, how much oil are you seeing? There should NOT be a huge puddle of oil up there, but rather a nice even coating, maybe a few tiny little puddles near the divots in the castings.
What engine are we working on here? |
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06-07-2020, 12:59 PM
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#3 |
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Not Yet Wild
Join Date: Sep 2019
Posts: 8
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Re: no oil getting to valves
G2 1991 yamaha took hose off of valve cover today that has metal piece of tubing in middle of hoses on back of engine.started it up no oil coming out of it.Then took hose completely of and blew threw it fine.Then took off the part I think that seats right were oil is that the hose connects too.Started again no oil coming out of the hole just puffs of air?
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06-08-2020, 06:43 AM
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#4 |
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Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,436
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Re: no oil getting to valves
The oil doesn't come from that hose, that's a breather tube, it just lets air in and out of the engine.
Oil comes from tiny passageways in the castings of the engine. If that engine has an oil pump, the oil gets pumped from the crankcase up into the engine through the oil passages. If it's a splash lube system, the crank has a dipper that throws oil all over and it makes its way up through the crankcase to the head. |
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06-08-2020, 06:44 AM
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#5 |
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Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,436
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Re: no oil getting to valves
Are you having issues with the engine?
Drain the oil and inspect it. Does it have metal shavings in it? Is the oil like black syrup and smell like gas? |
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06-08-2020, 07:00 PM
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#6 |
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VC 460 CLONE GONE WILD
Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 10,633
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Re: no oil getting to valves
That is the oil delivery tube if it next to the spark plug.The breather hose is on the other side of the rocker cover. Oil does come up there to the rocker box after being fed up there by the crank shaft splash fin.
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06-09-2020, 06:29 AM
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#7 | |
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Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,436
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Re: no oil getting to valves
Quote:
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06-09-2020, 06:31 AM
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#8 |
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Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,436
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Re: no oil getting to valves
OP, is the oil in the crankcase full and clean/new oil?
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06-09-2020, 07:13 AM
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#9 | |
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VC 460 CLONE GONE WILD
Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 10,633
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Re: no oil getting to valves
Quote:
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06-09-2020, 07:43 AM
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#10 |
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VC 460 CLONE GONE WILD
Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 10,633
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Re: no oil getting to valves
Pictured below is the valve cover or rocker box. Picture #1 shows the fitting for oil coming into the cover. Picture # 2 shows the fitting for venting crankcase pressure.
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