Sounds like sludge. Check you have enough breathers and they're not blocked, change oil, take it for a good long run.
I found Penrite HPR30 gave me a little bit in the neck, but Castrol Formula R 25W/50 doesn't.
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| Dirt under oil cap https://www.ausmini.com/forums/viewtopic.php?f=2&t=1044 |
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| Author: | minimarc [ Mon Jul 05, 2004 12:26 pm ] |
| Post subject: | Dirt under oil cap |
hey after a long drive i noticed there was a little bit of what looks like dirt under my fuel cap engine has just been put in and did sit for a while without head on anything to worry about |
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| Author: | gafmo [ Mon Jul 05, 2004 4:09 pm ] |
| Post subject: | |
I think its time to flush your tank out and ensure you have a fuel filter in the Line |
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| Author: | drmini in aust [ Mon Jul 05, 2004 7:39 pm ] |
| Post subject: | Re: Dirt under oil cap |
minimarc wrote: hey after a long drive i noticed there was a little bit of what looks like dirt under my fuel cap
engine has just been put in and did sit for a while without head on anything to worry about Do you mean the oil filler cap or the fuel tank cap? |
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| Author: | gafmo [ Mon Jul 05, 2004 9:52 pm ] |
| Post subject: | |
it does make a Dif True |
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| Author: | minimarc [ Tue Jul 06, 2004 3:46 pm ] |
| Post subject: | |
yeah sorry guys i mean the rocker cover cap or where you put the oil into the engine it doesnt seem to be doing it much if at all when i drive short distances around city but it was its first real run since engine was put in 1100 went on top of another 998 gearbox and the 1100 had been sitting without a head for a while maybe just a little dirt from that ???? or something to worry about i was checking the cap to make sure there wasnt any creamy stuff and i noticed little bits of dirt (looked like dirt) and wiped then when i stopped again a little was there again |
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| Author: | 68matic [ Tue Jul 06, 2004 5:03 pm ] |
| Post subject: | |
if you didnt clean everything properly, then i would guess it could be dirt. if you cleaned everything before you put the engine together then perhaps its burnt oil mixing with oil to create a sludgey dirt like substance. i dont know how this could happen... sump to pistons to valves to rocker cover? or through the camshaft along the push rods to the head to the cover? does the stuff have sand grains in it like normal dirt? |
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| Author: | minimarc [ Tue Jul 06, 2004 8:08 pm ] |
| Post subject: | |
no sand just a black dirtish stuff not much of it but grainy enough to feel when you rub between your fingers |
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| Author: | drmini in aust [ Tue Jul 06, 2004 8:11 pm ] |
| Post subject: | |
Sounds like sludge. Check you have enough breathers and they're not blocked, change oil, take it for a good long run. I found Penrite HPR30 gave me a little bit in the neck, but Castrol Formula R 25W/50 doesn't.
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| Author: | minimarc [ Tue Jul 06, 2004 8:18 pm ] |
| Post subject: | |
so if it is sludge which i think it could be from a bottle of stop smoke stuff i put in is it damaging |
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| Author: | drmini in aust [ Tue Jul 06, 2004 8:53 pm ] |
| Post subject: | |
Maybe...? For every litre of fuel burned 1.25L of water (vapour) is produced. Usually it goes out the exhaust, but.. if motor is old and worn you will have more blowby of fuel and water vapour past the rings- recipe for sludge.
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| Author: | 9YaTaH [ Tue Jul 06, 2004 9:03 pm ] |
| Post subject: | Metho |
drmini in aust wrote: Maybe...?
For every litre of fuel burned 1.25L of water (vapour) is produced. Usually it goes out the exhaust, but.. if motor is old and worn you will have more blowby of fuel and water vapour past the rings- recipe for sludge. try some Methylated Spirits in your fuel tank Son.... Its in the boot Son.....Its the twist off cap below the windows!!!
Try about a litre to a tankfull.....
Metho displaces water from fuel Son......
give it a try......
Oh, and by the way, I think you need to try a few rapid oil changes with cheap oil just to clean out the gunge......Is your radiator water also oily?? Might be a valve guide or head gasket on the way out??? 
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| Author: | gafmo [ Tue Jul 06, 2004 10:13 pm ] |
| Post subject: | |
I think we are dam close now |
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| Author: | min13k [ Wed Jul 07, 2004 7:39 am ] |
| Post subject: | |
hey doc what oil do you recomend ?? castrol formula r ?? makka |
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