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644 messages,  Last post on Dec 01, 2009 at 10:43 AM

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#641 of 644 Re: oil pump [spence35] by cttoaz Nov 09, 2009 (8:59 pm)
Replying to: spence35 (Nov 09, 2009 8:25 pm) Not meaning to be sarcastic here at all, but are you sure you added sufficient oil to fill the sump fully after doing the job initially?   I replaced the timing chain on my 96 with the same engine at beginning of the summer, and as long as the oil pump is correctly installed (all the feed holes line up to the block), the oil pump is flush to the block when installed (so that you know the oil pump/distributor drive shaft is properly meshing with the crankshaft gear and the shaft end keys are appropriately inserted into the oil pump & distributor ends ), and your distributor is spinning/timed correctly, there isn't much else here to look at. Installing the new oil pump eliminates the pump as a variable since both units act the same.   I agree that not removing the oil pan should not be a problem - I did mine just to make sure everything was leak free when I was finished but there was no mechanical reason to need to do so. It definitely agree that it sounds like the proper next step is to remove the pan to make sure that excess silicone sealant didn't fall in the sump and is now clogging the screen. I found some crumbs in my pan when it was removed, but if I remember correctly, not near enough to cause it to stop the oil flowing.   I think there might be a slight possibility of installing the oil pump backwards at 180 degrees or something, so look closely at its alignment (though I am not entirely sure you would be able to get all the bolts in correctly, and think it would likely spring a leak since the oil pressure would surely cause the gasket to fail).   Good luck! Replies to this message: spence35 (Nov 09, 2009 9:47 pm) spence35 (Nov 17, 2009 9:34 pm)
#642 of 644 Re: oil pump [cttoaz] by spence35 Nov 09, 2009 (9:47 pm)
Replying to: cttoaz (Nov 09, 2009 8:59 pm) heh,yea the dip stick says it has oil in it all the way,and the four empty courts of oil bottles tell me i should at least be getting some oil in my filter. I m pretty sure i cant get the pump in backwards because the long bolts go on top an 2 shorter ones on bottom every thing fits, the truck runs. i did as scary as it sounds let it run a few min hoping it would build pressure. no dice. I even took the valve cover of and started it for a minute. poured some oil on the cam and chain. expecting to get oil all over,didnt happen. Replies to this message: spence35 (Nov 17, 2009 9:34 pm)
#643 of 644 Re: oil pump [spence35] by spence35 Nov 17, 2009 (9:34 pm)
Replying to: spence35 (Nov 09, 2009 9:47 pm) Okay anyone else, I still have no oil pressure,packed my oil pump with vasoline,that didnt work, used engine flush that didnt work. Not sure my pickup tube is clogged. I had the pan separated 4" and cleaned the broken pieces of the timing chain guide out. the screen is not dirty. besides i did not have this issue til i changed the timing chain. I have noticed in my search this seems to be a common thing puzzling people. I even went as far as to go install an actual pressure gauge. why else would i have no oil pressure. new filter new pump Primed engine flushed. I took the spark plugs out . cranked it over several time ,letting the starter cool each time before cranking again.
#644 of 644 Re: 97 emission failure 97 nissan 4cyl pickup mystery [ryancey] by cookie49 Dec 01, 2009 (10:43 am)
Replying to: ryancey (Oct 17, 2006 6:58 pm) hey man,,i have a 1991 with the same engine.mine seems to have one lifter that wants to fuss just sometimes.it seems to leek down at times and tick like crazy.most of the time it runs quiet.did yours do this before the lifter finally went out?my truck has 272,000 miles on it and it still runs good other than this lifter issue sometimes.i bought both rocker arm assemblies from a junkyard(got all 8 rockers with the lifter in them for 36 bucks)hopefully one out of the eight will be good for me..what do you think?

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