Oil Pressure? Too High

[Satanic]

Ok guys once again i need some advice,

My vn sieries 1 seems to have a pressure problem 1st it cracked the oil pressure sender at the top were the plug goes in and kept blowing the fuel pump fuse, So i replaced that and all looked fine. Then a few driving/testing hours later i noticed that now it pops the dip stick out and sprays oil everywere.

So i guess my question would be is 1, Has anyone ever had this happen before and 2, Does anyone know anything that i may be able to look at that might fix the problem.

Cheers

[Boonz]

if it pops the dipstick out it has worn rings causing exhaust gas blow-by.... and its pressurising the crankcase until the dipstick blows out...

[SSbeast]

I don't think oil pressure is your problem most likely your crank case ventilation PCV is blocked allowing pressure to build and pop the dipstick out. Locate PCV valve and remove it and give it a rattle and use some throttle body cleaner if it's stuck until it does rattle. Also remove a rocker cover and check for a build up of gunk if so you may need to put thought some nulon engine oil flush. As with the fuel pump fuse blowing your fuel pump could be giving up the ghost mabye shorting internally?

[Rhino Racing]

Do as SS Beast says... First check to make sure that it is not just high crankcase pressure. Which can be caused by a blocked pcv(clean), worn rings, or a hole in a piston.( do a compression test)
At the same time of testing install a oil pressure gauge and read the actual pressure.
High oil pressure could be due to
a) Incorrect type oil if recently serviced.
b) Filter fitted incorrectly or a blocked filter and siezed relief valve.( fairly unlikely)
c)a bigend or main bearing turning and blocking off an oil gallery for the crankshaft. If this is the case the engine will not last too long at all in this condition!!!!!
It could cost you a cranshaft, rods and a block if it is.
I hope that for your sakes this is not the case but have this checked out properly before it costs you lots of money.
Lets hope it is something more simple like the PCV.
Good luck!

[immortality]

I don't think oil pressure is your problem most likely your crank case ventilation PCV is blocked allowing pressure to build and pop the dipstick out. Locate PCV valve and remove it and give it a rattle and use some throttle body cleaner if it's stuck until it does rattle. Also remove a rocker cover and check for a build up of gunk if so you may need to put thought some nulon engine oil flush. As with the fuel pump fuse blowing your fuel pump could be giving up the ghost mabye shorting internally?

yep, check this. on a s1 it's at the front of the manifold, you should see a small black tube making a upside down "U" shape, the PCV valve fits straight down into the manifold

[Satanic]

ok its not the PCV and the oil is within the right range so looks like i might have to look at the rings will be the first time i have changed the rings in a car (done plenty of bikes)
hopefully i can get it all done before the next race meet in may $$$ are a bit low right now so might have to wait a few weeks, thanks for all your help guys

[Satanic]

ok did the compresion test and every one shows just over 400 kpa does that sound about right to you guys i would of thought it would be higher

[jas98]

thats like 58 psi i think could be wrong lol just google for a conversion table

but if it is im suprised it even starts and runs (if it still does )

mine was all round 170 psi

[Satanic]

Hi guys, you going to all think this is really stupid i know i did when i worked it out the reson there wes bilt up air in the crank case was becouse of my supercharger it was blowing air into the vent on the rocker cover! pulled that pipe off and blocked it off re routed the vent to a vacume and bobs your uncel no more problem.

Thank you all for your help

[Rhino Racing]

HAAHAHAHHA! Nice find...... You never told us about the charger!
At least it was an easy fix!

[immortality]

Hi guys, you going to all think this is really stupid i know i did when i worked it out the reson there wes bilt up air in the crank case was becouse of my supercharger it was blowing air into the vent on the rocker cover! pulled that pipe off and blocked it off re routed the vent to a vacume and bobs your uncel no more problem.

Thank you all for your help

that will do it every time

[Satanic]

HAAHAHAHHA! Nice find...... You never told us about the charger!
At least it was an easy fix!

LOL easy fix? would of been if i didnt think it was sticking valves and pull the heads off but hay at least i now know what the inside of my motor looks like and how to pull it all apart