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Oil Pump shot how do I test?

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  #1  
Old 10-11-2015, 07:08 AM
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Default Oil Pump shot how do I test?

It's like it never ends.
On the highway today. Bike was running great. And suddenly I cut out like it was out of gas.

On the side of the road looked down and my oil temp was 350 or more. No oil pressure light on, no smoke, nothing coming out of the tail pipe.

Rented a uhaul and got it back home.

What I have found so far. The plugs are dry no oil. the oil tank is full, and by full I mean there is more oil in it than there should be.

This is weird. I compression tested the front cylinder and got 240 psi. Normally it is 185.
I cant run more tests on it because the battery is drained and I am waiting for the battery charger to charge up.

The status light on my ignition module doesn't blink red, but will register TDC

What should I be looking for? Where do I start?

Info on the bike.
1988 sportster 1250
Daytona twin tec ignition
 
  #2  
Old 10-11-2015, 07:20 AM
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Originally Posted by Wi_Duker
It's like it never ends.
On the highway today. Bike was running great. And suddenly I cut out like it was out of gas.

On the side of the road looked down and my oil temp was 350 or more. No oil pressure light on, no smoke, nothing coming out of the tail pipe.

Rented a uhaul and got it back home.

What I have found so far. The plugs are dry no oil. the oil tank is full, and by full I mean there is more oil in it than there should be.

This is weird. I compression tested the front cylinder and got 240 psi. Normally it is 185.
I cant run more tests on it because the battery is drained and I am waiting for the battery charger to charge up.

The status light on my ignition module doesn't blink red, but will register TDC

What should I be looking for? Where do I start?

Info on the bike.
1988 sportster 1250
Daytona twin tec ignition
Could be a plugged suction hole at the bottom of you oil tank , a badly clogged oil filter , a kink in a oil hose , a broken spring in your oil bypass valve .
 
  #3  
Old 10-11-2015, 07:39 AM
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Compression test front and rear 210 psi
Started bike for 30 seconds oil appears to flow in but doesn't appear to flow out
 
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Old 10-11-2015, 08:10 AM
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Originally Posted by Iron lHorse
Could be a plugged suction hole at the bottom of you oil tank , a badly clogged oil filter , a kink in a oil hose , a broken spring in your oil bypass valve .
Thanks
 
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Old 10-11-2015, 09:06 AM
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Drained Oil, checked for blockages in outlet and vent hose, put on new filter, only put in a quart of oil.

Oil Flows into tank, doesn't flow out of tank
 
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Old 10-11-2015, 11:57 AM
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Does a sporty have scavenger gears like the pump on pre- 2cam big twins? Shovel, evo, etc...
 
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Old 10-11-2015, 12:04 PM
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Originally Posted by tmanbuckhunter
Does a sporty have scavenger gears like the pump on pre- 2cam big twins? Shovel, evo, etc...
Yes it does
 
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Old 10-11-2015, 12:07 PM
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Do you use synthetic oil? My 107ci oil pressure 42psi at idle cold, 2psi when temp hits 250f. That's why you use synthetic, oil starts breaking down at 250.
 
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Old 10-11-2015, 12:13 PM
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Oil will flow into the tank But will not feed from the tank into the engine.

Somewhere along the feed route either into the pump, to the oil filter or from the filter back to the pump is a blockage or lack of pressure. Oil flow from the pump to the tank is strong. From the tank Nothing
 
  #10  
Old 10-11-2015, 12:17 PM
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Originally Posted by Wi_Duker
Drained Oil, checked for blockages in outlet and vent hose, put on new filter, only put in a quart of oil.

Oil Flows into tank, doesn't flow out of tank
I think it mite be a good time to install a oil psi gauge to see what the psi is.
 


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