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Post by nafox on Mar 24, 2020 18:51:25 GMT
Sad to say my Mk 1 MX has chosen the perfect time to die on me, and desperately need it to get in to work at the local hospital in these trying times, so was hoping there may be some insight available from you guys. On my drive back i noticed my oil pressure was very low, and at idle with the clutch disengaged it was reading at 0. had thought the engine wasnt too happy on start up and the rpm was around 600 instead of the usual 1500 ish until it warms up. Noticed a trail of oil up the drive and checked to see a large amount of oil on the undertray and under the car. I changed the cam cover the other week and replaced the gasket, and cant see any oil coming from it. seems to me to be coming from the oil sump but am yet to get underneath for a proper look. I was just wondering if there are any common issues that could be the cause of this or if any of the symptoms suggest anything? have added a couple of poor pictures incase anyone can help. cheers guys! Attachments:
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Post by atlex on Mar 24, 2020 20:11:52 GMT
IMO It's not likely to leak THAT much oil from a bad cam cover gasket. I'd not expect it to show low pressure, for sure. I could be wrong on that regard, as I am wrong on many things. Had a look at your pics, twice. It looks like it's not the sump, to me because there is oil on the block above the sump line. it looks like it's coming from higher up at the front of your engine. Take the cam cover off again and look around the front of the cams - did you dab some HT silicone near the arches that are just behind the cam pulleys ? How much oil has it taken to get it to read full on the dipstick marker ? Does the oil pressure still look OK if you run the engine now it is full ? I'd also check the spark plug holes. You may have not done the gasket there properly either and the oil may have gunked up one of the spark leads/holes. That could, maybe, explain the bad running. Take the plug leads out and look at them carefully. Good luck and thank you for your hard work at the hospital, too  |
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Post by nafox on Mar 24, 2020 20:46:07 GMT
Ah okay, ill pull the cover off tomorrow eve and take a look inside to see what condition it is in. I did dab a little HT silicone on but maybe missed the mark.
cheers for all the info and ill report back, hopefully with the issue diagnosed! And thank you for your kind words, happy to be doing my part to get through all this haha.
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Post by dadbif on Mar 25, 2020 13:34:24 GMT
The low oil pressure could be due to lack of oil? How much is in the sump?
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Oil Leak
Mar 25, 2020 13:34:53 GMT
via mobile
Post by dadbif on Mar 25, 2020 13:34:53 GMT
Duplicate removed
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Oil Leak
Mar 26, 2020 17:51:22 GMT
via mobile
Post by nafox on Mar 26, 2020 17:51:22 GMT
Yeah most likely, as I had such a large leak it is simply from when it dropped out there wasnt enough to keep the pressure up. Unfortunately wont have a chance to get in to take a look till next week now but hopefully will just need topping up and checking my gasket seals
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Post by atlex on Mar 26, 2020 17:57:09 GMT
Yeah most likely, as I had such a large leak it is simply from when it dropped out there wasnt enough to keep the pressure up. Unfortunately wont have a chance to get in to take a look till next week now but hopefully will just need topping up and checking my gasket seals I'm hoping it isn't anything more serious in your engine that's gone. If you don't spot anything obvious having another look around, be sure to clean up the mess that there is. The problem with oil leaks is that oil wicks all over the place and it makes it hard to spot the source. It generally doesn't travel 'up' but it can in the right circumstances (air blasting it around, for example) .. |
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Post by Rickster on Mar 26, 2020 21:42:56 GMT
Do you know if the car had an aircon delete. One of the aircon bracket bolts goes through the front cover to locate the oil pump housing - this can cause the symptoms you describe
Also front left side (looking from the front) near the alternator is the oil pump relief valve, if that was leaking it would cause this.
As others have said, a gasket leak per se would not cause low oil pressure - until you’d lost such a significant amount of oil but you’d need to lose a litre or two for it to drop that low?
If you lived near me and you need your car to work at a hospital in these trying times then I would lend you my 5 which is sat in my garage at the moment
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Post by martiny on Mar 27, 2020 11:20:24 GMT
If it was a weep from the oil pump due to an aircon delete, the leak would be right at the bottom at the front, exhaust side. This looks like it's coming from further up. I won't be surprised if it turns out the new cam cover gasket has a corner that's got trapped out of position somewhere near the cam gears.
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Post by dadbif on Mar 27, 2020 15:25:00 GMT
I agree, but that leak wouldn’t be great enough to drain the sump
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Post by swordspork on Mar 27, 2020 16:01:10 GMT
The first image looked like front crank seal to me, but as others have said the second image ruled that out as the oil would have to travel up.
Could it be coolant? I had a pin hole leak in a coolant hose that pissed (very finely) all over the engine bay and was a bit hard to spot initially.
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Post by atlex on Mar 27, 2020 16:08:20 GMT
The first image looked like front crank seal to me, but as others have said the second image ruled that out as the oil would have to travel up. Could it be coolant? I had a pin hole leak in a coolant hose that pissed (very finely) all over the engine bay and was a bit hard to spot initially. I had another look at the first picture at the top right of the image, it's definitely from behind the cambelt cover and wicking out through the gap between the cover. Probably from inside.. since that cover extends around the front engine that explains the oil on both sides.. but what's failed inside, who can say. |
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Post by nafox on Mar 28, 2020 20:11:52 GMT
Do you know if the car had an aircon delete. One of the aircon bracket bolts goes through the front cover to locate the oil pump housing - this can cause the symptoms you describe Also front left side (looking from the front) near the alternator is the oil pump relief valve, if that was leaking it would cause this. As others have said, a gasket leak per se would not cause low oil pressure - until you’d lost such a significant amount of oil but you’d need to lose a litre or two for it to drop that low? If you lived near me and you need your car to work at a hospital in these trying times then I would lend you my 5 which is sat in my garage at the moment As far as I'm aware it didnt have aircon from factory, but will double check through my documents. Ah that's so kind man, glad to see there are people like yourself out the looking out for people in these hard times. Thankfully I'm close enough to suck up the walk haha. Just need to pull it apart when I get the chance and see if there is an obvious leak by the cam belts as others have suggested. Really appreciate everyone elses help with this too. 👌 |
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Post by Rickster on Mar 29, 2020 8:16:01 GMT
Looking at the pics on a bigger screen and the fact that the you recently changed it I would suggest cam cover gasket leak, did you put dab of sealant on the angles of the rubber gasket where it goes over the camshafts and cam sensor. If you didn't then it will be leaking. The application of sealant is a requirement in the workshop manual.
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Oil Leak
Apr 4, 2020 11:24:49 GMT
via mobile
Post by nafox on Apr 4, 2020 11:24:49 GMT
Finally had a chance to get at it today, but to no avail.
Checked the cam cover and all looked well, no leaks down by the cam belts and none in the spark plugs that I could see. Re sealed and started to the same issues, along with a clunking which was there before that I failed to mention. Still zero oil pressure but checked and have a good amount of oil left in, and did top up too. Sadly may have to bite the bullet and take in to a garage.
Really appreciate all the advice and tips from you all 👌
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le sigh