Busaru.com — I was experiencing low oil pressure at idle on my VW Bus with a Subaru 2.2 Liter engine. Usually this is a sign of the screws backing out of the oil pump so I delve into removing that and you’ll be surprised by what I find. Enjoy the ride!
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15 комментариев
What sort of mileage have you done in this now? How is the cooling system holding up? Are the fans needed when driving or do they just come on in traffic?
Check the pressure relief valves in your oil pump
always check the pressure relief valve system when you replace, examine or mess with any pump
Thanks for these series of videos! Very helpful and inspiring. I've got a '72 that I put a Ford 2.0 in about 100k miles ago. Love the extra power. It vibrates like crazy so put the 1.7 VW pancake back in. Ugh. The Busaru idea is great. You've inspired me to make that my 2015 project.
With regard to the gauge problem, I would suspect it's not so much the cheap ebay meter, but the long length of thin gauge wires between the sender and the meter as well as a high resistance ground. (the resistance of the wires and ground back to the battery set up a voltage divider that you don't want) Turning on the lights is the clue there. I bet if you turn on the turn signals or emergency flashers the pressure will vary up and down with the flashing of the lights.
I've experienced the same issues in my bus. Ive used 12 or 14 gauge wire from senders to meters, as well as a 12 gauge ground direct to the battery for instrumentation and that has fixed the problem.
Just a suggestion. Keep up the good work! Safe travels!
Your main bearings are going….
Did the fuel pump noise ever get dealt with?
Hey question.
What's the torque specs on the 5 bolt for the cover on the oil pump? And the cover for the spring?
Thanks
Im having the exact issue with my subaru the gauge reads fine when driving but at idle it goes down to 4-5 psi
it looks like you have a ground problem
the sensor have one wire?
have you used sealing tape on the pressure sensor or the t-hose?
measure the resistance (ohm) between the sensor ground and the engine.
if the resistance is high you might put a wire around the pressure sensor with a house clamp, and ground it on the engine
(do not ground a small chable to the case, if you have a resistance between the case and the engine and the battery is grounded in the case. you might burn up the small cable when starting bicose there might trying to get 100 amps try the small cable)
also the ground whire between the engine and the case may have a issue? does the car start well?
you might have the battery ground cable directly connected to the engine? then the car will start good and also charge the battery well, because the charger ground is in the engine block
now there is a cable between the car battery and the case or the engine and the case. this cabl have a bad connection
if you don't hava a cable like this between the case and the engine the electricity is flowing from the small areas where the motor is mounted to the case, mostly you use robbery mounts and that's insulation the voltage.
the gauge usually are using small voltage for measuring,
example if the pressure sensor is 0-5 V and the sensore is reading 1v on the lower scale when idle.
when you turn on the lights a current will case a voltage different bicose of the resistance and you get between the sensor ground point and the meter ground point -1V and using simple + and — math 1V + -1V is equal to 0V and the meter will Reed pressure baist on the voltage 0V = 0 pressure
is the gauge ground point in same place white the hed lamps or something else that takes a lot of amps?
you might use a voltage meter to measure the voltage different between the engine and the case.
do like this, put on the head lights
take a Voltage meter and chose a low scale like max 2V
measure the reading between the engine and the case
measure the car battery ground and the case
measure the car battery ground and the engine
you measure the voltage between the sensor ground and the engine. you might even measure the resistance ohm, if you were using some kind of non inductive sealing on the installation the issue might be right there 😉
you can take a wire that you mount on the engine to get longer measure cable. now measure the voltage between the ground point of your meter and the engine.
the less voltage different the bet.
all the best
Very common issue with the cheaper mech senders, racers usually remote mount them to a firewall.
Where did you get that tachometer from ?
Thanks for the vid was going to go straight to the replace oil pump will check it manually first now
Keep a battery charger on it when no alternator running and see what happens
Im curious if there is a way to put a subaru cluster in the vw bus?
You need to go back school and learn basic machanics, or get another job, oil pressure does not come from the
oil pump, I can hear the main bearings rumbling from here.