is there any way to reassemble the oil pump. i took mine apart to make sure that there was no debris in it after my old motor bit the dust. put new motor back in primed it, started it up for like 5-10 sec. and had no oil pressure. primed it again, took a valve cover off and the only lube up there was assembly lube? so any suggestions on fixing this problem? thought it was a sensor but all conneections are good and like i said it has no oil in the vavle covers. did i damage the new motor? please help, im goin crazy

 

More then likely its the o-ring on the pickup tube. Its pretty hard to screw up putting the oil pump back together.

 

the o ring is in there i know that. how long does it take for they system to build pressure?

 

Not long.

The o-ring may be in there - but it may be cocked to one side, or squared, thus rendering it useless. No oil pressure = o-ring installed wrong 99% of the time.

 

you sure the oring did not get pinched. It should have made pressure fairly quicky, I think that the last pump I saw, made pressure almost immedately.

 

well that could be the case then. i have continued to prime it and still no pressure on startup. so you are sayint the o is screwed up somehow. thats nuts, this thing is pissin me off. now i have to take it all back apart again. not today. im done for now

 

Taking it back apart before you've ruined ruined something is alot more fun than the other way around!

 

I would just replace it, too much of a headache trying to reassemble.

 

Quoted for truth!

Ben T.

 

replace the oil pump? it has less than 2k miles on it. only took it apart to make sure there wasnt any contaminates in it. i will just take it back out and make sure that o ring is in there good. it will have to wait till monday. but if anybody has any more thoughts i am open for suggestions

 

10w40 wouldnt have anything to do with it would it. i mean im getting NO pressure to the top of the heads. i guess its the oil pump. i dunno its just frustrating

 

Check the O ring, and maybe even the pressure releif valve. Did you crank the motor over without fuel or spark to prime everything first? It may take a few seconds to circulate oil if its a new motor and the lifters etc arent full yet.

 

Seriously I bet it is just the o-ring. You would be surprised what that stupid 75 cent part can do if not installed perfectly.

 

i soaked the lifters in oil for hours before installing them. and i primed and stared the engine and nothing. primed several times and check several times. still no pressure. fn o ring. will find out on monday i guess

 

Did you swap over the oil restrictor plug in the back?

https://ls1tech.com/forums/generation-iii-internal-engine/481722-important-there-oil-restrictor-barbell-restrictor-any-internal-oil-plug.html

 

w2w said they did. i mean i sent them the back cover and kevin said HE saw them put it in i dont know for sure. he said he saw it go in so i believe him. i dont know for sure if they put it in but i would assume they did. i pray that its that o ring, putting that restricor plug in would consist of taking the motor back out right?

 

should i have to put in the front oil gally plug or would they have already done that?

 

No, you will only have to pull the trans and rear cover off to get to that restrictor. You can check to see if it's there by removing the oil plug at the back corner of the block.

I'm not saying the engine builder didn't put it in......just giving you a heads up that it could be the cause. Could be the pump too. The pump isn't too bad to put back together. The cover is torqued to 106 in lbs. Make sure the pressure relief valve is good and clean before you put it back together.

 

pressure reliefe valve? sorry for sounding so dumb. im good at bolting up and taking off but when it comes to the tech part of it im an idiot

 

On the pump there is an allen head bolt on the end. When you take that off there is a little piston and a spring inside. When you pull that out you can spray it down good with brake cleaner to get all the crap out.

Here is a description of how it works and where it is. https://ls1tech.com/forums/showthrea...l+pump+porting

A lot more in depth than you really need to know. Lol!