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Anon
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Caveat Emptor - Latin for Don't be a Plonker !
I already have the ear-plugs in place for the howls of derisive laughter from seasoned CFUKers......but I bought a cheap 1984 CF Autosleeper 2.3 petrol sight unseen on eBay either as spares for my other CF or repair......
It's a remarkably good solid and original van - but the oil pressure warning light is on. Oil level seems OK. Exhaust does not smoke and engine is not noisy (though because there is no MOT I have not driven it under load)
The vendor said in the listing:
i brought it with a small engine fault which was blowing oil through the breather pipe once i got the van home investigated and found that the van had 13 litres of oil in it lol so no wonder there was an oil pressure prob drained the oil flushed it new filter and rocker cover gasket and it was sorted :)
Would be grateful for the usual expert advice on this !
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 Sat 21 Jul 2012 @ 11:36
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Anon
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If the engine isn't rattling then the problem could be just a duff oil pressure switch: Intermotor 50510 or equivalent.
Also check white+brown wire in the engine wiring is connected to the switch and not shorting to ground anywhere.
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Sat 21 Jul 2012 @ 11:45
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Anon
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Many thanks Phil !
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Sat 21 Jul 2012 @ 13:21
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Anon
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Popped the engine cover off and there is the oil pressure switch right at the back of the inlet manifold ! Wiring is fine. Warning light only comes on at slow idle - and extinguishes when revs are increased. The oil is fresh but it looks a very thin viscosity. Is it possible the cause is wrong grade oil, Phil ?
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Sun 22 Jul 2012 @ 11:31
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Anon
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Oil pressure switch is at the back of the engine next to the starter motor, not on the intake manifold.
Only switch on the back of an intake manifold that I've come across is vacuum warning (an option on some models).
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Sun 22 Jul 2012 @ 11:45
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Anon
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Yes apologies for causing confusion - what I meant meant to say (for others who will hunt in vain for this switch as I did at first) is that it is on the inlet manifold side of the engine and as you say, on top of engine at the rear.
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Sun 22 Jul 2012 @ 19:58
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Anon
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Oil warning lamp flickering on idle may be low oil pressure but also could be due to idle speed too low or a faulty pressure switch.
If the idle speed and switch are ok then try 15/40 engine oil if you think that what's in is on the thin side.
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Sun 22 Jul 2012 @ 20:12
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Anon
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Wouldn't hurt to do an oil and filter cahnge and bung in a can of STP. This worked wonders on my Triumph 1500. Hope it's an easy fix for you.
Ken
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Sun 22 Jul 2012 @ 20:50
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Anon
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Hi, as you said in your first post.The previous owner drained the oil and FLUSHED the system. As has been posted on here before the slant engine does NOT like flushing oil as it can damage the O rings on the oil pump intake. Maybe this is why you have low oil pressure at tickover. Regards.
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Sun 22 Jul 2012 @ 22:52
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Anon
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Once again thanks for some really helpful advice, fellas.
A fresh development - yesterday the oil light just came on at idle. Today it's on all the time. The engine has not been run between times. This seems to point to the pressure switch to me - so I'll get one of those and report back on progress !
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Mon 23 Jul 2012 @ 14:48
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Anon
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As a fairly competent DIY mechanic I can't quite believe I am asking this - but have I just bought the wrong size spanners for our CF ?
None of my new AF ones seem to fit the pressure switch hex nut. Closest is 5/8 but it is a sloppy fit, and 9/16 won't fit at all. Closest I get is with a metric 15 mm but I'm still worried I'll round off the nut.
The close proximity of the starter motor isn't a great help in getting any leverage on the open ender, either.
Since a new pressure switch is less than a fiver should I just break off the top and get a socket on the hex to get the darned thing out ? Or is taking the starter off for easier access a better idea ?
Would be grateful for some advice please - as a simple job is rapidly turning into a farce !
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Tue 31 Jul 2012 @ 15:15
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Anon
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Hi, I think most nuts and bolts on the CF are metric, at least the ones I've played with seem to be.
Martin
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Tue 31 Jul 2012 @ 18:58
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Anon
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There is both metric and imperial on most CF. UNF imperial thread.
Richard & Judy
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Wed 01 Aug 2012 @ 18:06
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Anon
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Thanks very much indeed for the clarification - can now bark my knuckles with a greater degree of certainty !
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Thu 02 Aug 2012 @ 09:32
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Anon
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But you are right, the easiest way to get them off is to bash the top of the switch.
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Thu 02 Aug 2012 @ 12:08
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Anon
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Spot on Phil ! That's just what I did. I am very pleased to report that the old unit WAS faulty - there is nothing wrong with the van's oil pressure. So from fearing I'd bought a pup, I am now of course congratulating myself on a shrewd eBay purchase.....until I discover why the brakes aren't working, that is !
The new oil pressure switch (Intermotor 50510 or XOP S2 for the 2.3 petrol engine)was available at my local motor factor. Glad to report the unit has been redesigned with a large hex nut right on the top, making fitting and removal very easy. A word of warning though - if you have to butcher your old switch out, DO wear eye protection as the internal spring flies out when you chisel the top off !
Thanks again for all the kind and helpful advice.
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Fri 03 Aug 2012 @ 17:16
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