had problems with my oil pressure the relief valve was sticking, so i bought a nylon one from sbd. was using fully synthetic from vaux. the other day changed my oil and put 15/40 magnatec in and blew air up the oil pump from the relief valve side. then at high revs it started to get tappy at the top, then got worse and seized the lifters up. bought a new set and still taps after ten mins the relief valve is free and there is oil going round the cams.
but i removed one of the allen bolts fron the oilways inside the head and blew air into it and the oil that came out by the lifters looked quite dark
do you think i have a blocked oil way in the block
it is really starting to get me down as i have spent so much money on this engine
am going to strip the head off and check what size are the torx head bolts
> do you think i have a blocked oil way in the block
when you fitted the new tappets, you did prime them up with oil before fitting?
You did use lots of mooly grease on the cam lobs before fitting and starting the engine?
Also each tappet bore hole in the head as a small oil way hole on the side of the bore. You need to clean these out to, as it feeds oil to the tappets (hence the small hole on the side of the tappet iself). Clean these out with a squirt or carb cleaner should do the job.
> and my oil pressure guage is always reading full it takes about 2 secs from start then goes alll the way hot or cold
thats sounds normal.
Howevert that gague is only showing you what pressure the oil is at the oil sender, which is far away from your head/cams.
You havn't answered my questions.
Need to know the basics before we start delving too deep into the problem.
For starters what engine and year have you got and does it have a oil coller rad?
> if i turn the engine over without the head on should oil come up out of the oil ways
don't know, never done it. If it does it would be very messy, hence why I've never done it, too much to clear up. With the head off, get some garden fence wire or old coat hanger. Push this down through the oil ways in the block and head. This will make sure they are not blocked.
Then clean the small oil ways in the tappet bores like I said (if you haven't already done so).
You can also turn the engine over and remove the oil pressure sender, oil should come flying out. Thats about far as you can go visualy seeing if oil is getting anywhere.
hi mate it is an 20xe 1990 it has an oil cooler
tappets are brand new and primed
head is clear block oilways blowing clear into the sump
will remove oil pressure sender and check
the oil pump is only one mont old it has a nylon relief valve in it
how does the oil get from the sump into the head and pressure ise the tappets ??
the oil does not come up the oil ways with the head off
I've had oil pump problems in tha past, in fact it knacled my k16 turbo, over £400 worth!
Anyway, the oil take sa very long path.
1) oil sits in sump
2) oil gets sucked up by oil pick up pipe
3) oil then gets 'compressed' and then (in this case) comes OUT of the sandwich plate through the oil rad cooler.
4) oil comes out the oil rad cooler, back into the sandwhich plate and into the oil filter
5) out the oil filter, feeds through a channel in the oil pump and into the block.
From there on I don't really know where it goes, must go all over the shop, crank bearings, crank it self and up into the the block too.
I'm also not sure if the oil filter comes before or after the oil rad cooler.
I checked my oil flow by remove the oil rad return pipe. Looking at the sandwhich plate, undo the left hand banjo connection. start the car. Oil should come flying out of the banjo pipe. This shows you oil is getting picked up and pumped through.
If you remove the oil pump, you'll see the crank/no1 end cap face. Plus on the left is the 'cavity' with a hole in the block. The gasket below shows the area better. This hole is where the oil sees the block for the first time. This is where the oil pump actuall pumps the oil into the block.
When I squirted oil in there with an oil can, oil slowly dripped out from the bottom and the no1 crank bearing shells. as I have a c20let block, I also have a K16 oil feed, you can just about see the union for this connection on the side of the block *just* above the oil hole that I'm on about.
When the engine was started, I undon this union pipe connection, and again oil was coming out. This told me the oil pump was pumping oil into the block at this point. but with your c20xe block, you can't do this ans there is a plug there blocking it up.