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Oil pressure Vauxhall 8v

Author Hotfuzz
In bed with cold
#1 | Posted: 24 Sep 2014 09:47 
Hi, I'm new to Caterham ownership and here and hoping I can obtain some advice?

I have a 1999 Caterham with a 1600 8v engine. I replaced a badly leaking sump gasket a few days ago also replacing the sponge baffle. I replaced this with a new sponge from Caterham which was much thinner than the item I removed and slightly smaller in length.

The other minor difference was there is no circular cut out area on the sponge where the original item had presumably had it for the oil pick up. I didn't cut out this section as I believed as it was so much thinner this wouldn't be required and kind of thought that perhaps if it was needed then it would have been done by the manufacturer.

Now after running the engine there is almost zero oil pressure! The dial worked previously and nudges up slightly when I turn on the ignition but still no pressure.

I'm reluctant to run the engine too long, would the oil pick up be sucking up the baffle sponge because I perhaps wrongly did not cut out a circular area? Or would this be a coincidence that the dial has failed? I don't know if I'm being paranoid but when running the engine sounded slightly "Tappety".

Any advice would be greatly appreciated?

Author Eugene

Heading South
#2 | Posted: 24 Sep 2014 11:28 
I would agree with your final assessment - don't run the engine!
I really do not know, but it sounds like the baffle supplied my have been incorrect, but I am sure more knowledgeable people will be along shortly...

Le Presidente

Author uncle albert

On ferry
#3 | Posted: 24 Sep 2014 12:41 
Hi Hotfuzz.
Drop the sump again and cut out baffle , take off pick up pipe and check to make sure nothing has been sucked in to pump .
there is an external oil pressure relief valve , remove and check its not stuck or anything sitting under seat.
All the best
PS prime oil filter before starting

Author Hotfuzz
In bed with cold
#4 | Posted: 24 Sep 2014 14:13 
Cheers guys,

As a matter of interest where is the pressure release valve? I recall seeing a small amount of oil coming from a black plastic module opposite the alternator on the engine block, exhaust manifold side. Could this be the valve?

Thanks again.

Author Jake and Elwood

In garage
#5 | Posted: 25 Sep 2014 13:11 
Usually the valve is part of the oil pump...
It basically bypasses the oil filter if it becomes blocked, or generates too high a back pressure.

Make sense?
Jake and Elwood
I ran out of gas. I... I had a flat tire. I didn't have enough money for cab fare. My tux didn't come back from the cleaners. An old friend came in from out of town. Someone stole my car. There was an earthquake. A terrible flood. Locus. It wasn't my fault. I swear to god!

Author Hotfuzz
In bed with cold
#6 | Posted: 23 Oct 2014 19:17 

As expected, the school boy error of not cutting an area of the baffle sponge for the oil pick up pipe was the cause.

This was restricting the oil flow, now resolved with no issues and normal oil pressure. More expense with a set of gaskets again though!

Everyday is a school day...

Author Hal

On driveway
#7 | Posted: 26 Oct 2014 17:08 
I dunno.....I wouldn't blame yourself.

In the absence of a hole in the correct place when bought, or any instructions as to the necessity of finishing the thing yourself so as to avoid oil starvation and a trashed engine, I'd be having a word with the supplier.

Like the head on the PTP engine in my car which the builder apparently had forgotten to match to the injector throttle bodies. The amusing thing there, (the engines sold for £12,500 at the time....) is that the end user was a race team sponsored by and carrying the name PTP!

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