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Low oil pressure is common for twin cams - I have owned perhaps 6 twin cam sedans over 20 or so years plus Lancia sedans with twin cams. I can't recall any that would shift the oil gauge with much vigour.
In that respect, I would say then that low oil pressure is no big deal as I have never had any engine bearing problems and have had terrific reliability out of all of them.
I did break a cam belt and had to replace valves on a 2 litre twin cam - this car (Lancia) had very very low oil pressure so I thought I'd replace bearings while I was at it.
I was surprised to find the big ends in perfect condition. . . ( they can wear out, by the way) and that was what I was expecting. What I did find that I was not the first person to work on that engine. I found that the front layshaft shell bearing at the front of the block was destroyed - that bearing is right at the beginning of the oil circuit - most of the oil going there was just squirting back into the sump. The only way that could happen is by not getting the jack shaft pulley in the correct spot when changing the cam belt - no 2 conrod then hits the lump in the jackshaft for the fuel pump and squashes the bearing to bits - bit sad as the lancia didn't have a mechanical fuel pump and the jackshaft only drove the oil pump. . .
When I got to the head and removed the inlet camshaft I found that same brilliant mechanic had secured the camshaft in a vice by the bearing journal - still had the cross hatch marks on it from the jaws of the vice. Lovely. . . The journal was cussed really, so was the oil control to the head and valve clearances could not be set. So apparently if you have extra low oil pressure could be the camshaft journal or squashed jackshaft bearing. . . but do you know what ? I put it all back as I found it and it ran fine for years crossing Australia a couple of times. It went very well, as did the only other lancia I owned ( big ends were rattly on this one)
Fiat Twin Cam engines are not particularly fussed by low oil pressure. I cannot recall having one with great oil pressure 3 x 1600 125, 4x 2 litre, 2x 1600 124Sport 2x 1800 132. I have 1976 1800 132 at the moment ( with low oil pressure !) - they are so rare now sadly
David
Wiki User
∙ 15y ago
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1992 Saturn twin cam shuts off when gas pedal pushed?
Check the fuel pressure at the test port. If the fuel pressure is low, it could indicate that either the fuel pump is worn and or that the fuel filter is partially blocked.
What is it when oil sending unit have been changed but low oil pressure?
usually means cam bearings are worn, that is where oil pressure is built
What bearings in a 350 cause low oil pressure?
Cam bearings, Main bearings, Rod bearings.
What causes low oil pressure in rebuilt 350 Chevy?
Not sure, i would say oil pump or cam bearings
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Low oil pressure. CHECK with oil pressure gauge. Worn valvetrain / Lifters are cam lobes worn. stoped up oil pump screen. Cam bearings worn. These are a few things you need to check.
What is the difference between high-lift cam and low-lift cam?
A high lift cam lifts an engine valve by a higher amount than a low lift cam.
What causes your 2003 trailblazer to die out and it says low oil pressure?
CAM Actuator screens need to be cleaned or replace whole part.
What causes low oil pressure in a 1989 corvette?
Low oil pressure can be due to many problems. A bad oil pump is first guess. A bad oil pressure sending unit could also be one. The engine oil level is below operating levels. Bad cam bearings could also affect oil pressure levels. The oil pump only provides the oil supply. The main, rod and cam bearings provide the pressure as the oil is squeezed past them.
What would cause the oil pressure to run low in a 2006 Passat?
Could be worn bearings [cam or main] a weak oil pump pressure relief valve or a weak oil pump
When you start your Honda Accord 4-cylinder and hear tapping at the top of the engine what kind of problem is this?
sound like you cam followers (if overhead cam) or lifters are making noise. Could be low oil pressure to the head.
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Bad wire connections to the pump. Shot pump.
Are hurricanes low pressure or high pressure?
Hurricanes are low pressure systems.
