Oil pump bleeding question

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rodny51082

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Nov 28, 2011
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Location
massachusetts
I am trying to bleed the oil pump on my viper and I am a little confused on how to do so. I researched some old posts and my understanding is to remove the bolt from the oil line down on the carb rack, is this done with the motor running? Also do I need to bleed the line that goes to the fuel pump?
 

Bleed with the engine off. Basically gravity is what bleeds it. You don't have to bleed the line to the fuel pump, but you should run a small amount of pre-mix if you don't. It is easier to simply bleed the line to the fuel pump.
 
I don't think so, I believe it just bleeds to the pump. Once you get oil to the pump it will quickly bleed to the fuel pump.
 
Ok so I should run some pre mix then? I have some yamalube 2s to pre mix but it says nothing on the bottle about how many OZ's per gallon to mix at 50:1.
 
Not to contradict Ding but I've had my share of times when I had to bleed the oil pump and I've never run premix as a precaution just to make sure there was oil in the fuel pump.You can do this if you want but bleed the pump line like your supposed to and once you fire the engine up yank the cable so that it opens the pump wide open,to be honest at idle I don't think it would be absolutely critical that you use pre mix until the fuel pump has enough pumped through it.
I'm by no means a licensed mechanic but I've built my share of engines so take my method for what it's worth lol.
 
I Agree with fourbarrel. I rebuilt my engine and just bled the pump. The amount of time it takes to get oil to the engine isn't going to cause damage at idle. just seperate the oil line so it runs full open until you have oil reaching the engine then your good to go.
 
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