Hi: this is a 1990 low hours 200 HP V6.
I just replaced the original VRO2 fuel pump with a brand new, current OMS pump and updated the oil tank and all lines, pick up filter and pulse limiter. The old pump was working fine, but I decided that since I use this engine in remote places, I'd just go ahead and update the fuel pump and oil system.
It really was not a difficult job, very straight forward, and I used an OEM shop manual, proper fasteners, torque wrench when called for, etc.
All oil system hose connections are with the correct ratchet type clamps, and they all appear to be air tight. I purged the air out of the oil line and collected about 1/2 pint in a jar before I connected it to the fuel pump.
I've tested the "no oil" and "low oil" alarms and both work properly, sounding when appropriate, stopping when appropriate.
I marked the oil tank in 1 pint increments as I was filling it for the first time (from quart containers) and have been monitoring on that basis.
The engine is running perfectly: starts easy, idles smoothly, accelerates well and runs around 5800 RPM at wide open. No hot or fuel restriction alarms. It really is a nice running engine and I'm very happy with the way it runs.
The odd part is that the oil is mixing at about 80:1 running at 3/4 to full throttle. My understanding is that the OMS pump is supposed to be close to 50:1 at all RPM's. Over the past week or so, I've run about 20 gallons of the pre-mix gasoline and it's burned at most about 1 quart of oil.
The proportions cold actually be as low as 65:1 or as high as 100:1 because my measurements, while good, aren't perfect. I have built in 25 gallon rectangular tanks and have a marked dip stick to measure fuel level. I originally made the dipstick by filling an empty tank 5 gallons at a time and marking 5 gallon increments on the stick, and guestimate between marks. So, I really can't say it's more accurate than to the nearest 1 or 2 gallons. So fuel could be 18-22 gallons.
Oil is pretty close to a quart, but, again, could be an ounce or two more or less.
But it's not 50:1 or even close to that.
What's going on? What should I check?
Maybe I should just run another hour or so and see what the next 15-20 gallons brings?
Thanks.
I just replaced the original VRO2 fuel pump with a brand new, current OMS pump and updated the oil tank and all lines, pick up filter and pulse limiter. The old pump was working fine, but I decided that since I use this engine in remote places, I'd just go ahead and update the fuel pump and oil system.
It really was not a difficult job, very straight forward, and I used an OEM shop manual, proper fasteners, torque wrench when called for, etc.
All oil system hose connections are with the correct ratchet type clamps, and they all appear to be air tight. I purged the air out of the oil line and collected about 1/2 pint in a jar before I connected it to the fuel pump.
I've tested the "no oil" and "low oil" alarms and both work properly, sounding when appropriate, stopping when appropriate.
I marked the oil tank in 1 pint increments as I was filling it for the first time (from quart containers) and have been monitoring on that basis.
The engine is running perfectly: starts easy, idles smoothly, accelerates well and runs around 5800 RPM at wide open. No hot or fuel restriction alarms. It really is a nice running engine and I'm very happy with the way it runs.
The odd part is that the oil is mixing at about 80:1 running at 3/4 to full throttle. My understanding is that the OMS pump is supposed to be close to 50:1 at all RPM's. Over the past week or so, I've run about 20 gallons of the pre-mix gasoline and it's burned at most about 1 quart of oil.
The proportions cold actually be as low as 65:1 or as high as 100:1 because my measurements, while good, aren't perfect. I have built in 25 gallon rectangular tanks and have a marked dip stick to measure fuel level. I originally made the dipstick by filling an empty tank 5 gallons at a time and marking 5 gallon increments on the stick, and guestimate between marks. So, I really can't say it's more accurate than to the nearest 1 or 2 gallons. So fuel could be 18-22 gallons.
Oil is pretty close to a quart, but, again, could be an ounce or two more or less.
But it's not 50:1 or even close to that.
What's going on? What should I check?
Maybe I should just run another hour or so and see what the next 15-20 gallons brings?
Thanks.
