885 Engine Problem

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tim123
Posts: 32
Joined: Sat Jul 07, 2007 7:29 pm
Location: Devon, UK

885 Engine Problem

Post by tim123 » Sun Jun 03, 2018 8:36 pm

An interesting thing has occurred and I am scratching my head. When I use the manifold heater and then start the tractor initially oil surges up through the air cleaner and covers the bonnet. It then runs fine with no further oil escaping. If I don't use the heater this doesn't happen! I thought earlier that a valve spring might be broken or something but had the cover off and all valves seem to be ok and closing properly. She does run very smoothly so don't think a valve is damaged. Can't work out why back pressure is building up in the inlet at startup. Something to do with timing? Has anyone else experienced this or have any suggestions? Tim

1953 Diesel Cropmaster
1975 885 (low profile Weatherframe)

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ollek
Posts: 3373
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Re: 885 Engine Problem

Post by ollek » Mon Jun 04, 2018 6:45 am

There will be a small pressure build up in the inlet manifold when the Thermostart ignites and the flame burns. Is the oil level in the air cleaner correct and is the screen intact? Oil can be blown out from the air cleaner if the oil level in the bowl is too high and/or the screen is damaged. Do a complete overhaul of the air cleaner. The oil is not coming from the engine, but from the air cleaner. The Thermostart unit is to be used when the ambient temperature gets down below freezing, there is no need to use the pre-heating device in warm weather.

tim123
Posts: 32
Joined: Sat Jul 07, 2007 7:29 pm
Location: Devon, UK

Re: 885 Engine Problem

Post by tim123 » Wed Jun 13, 2018 7:41 pm

Thanks Ollek, great advice. I do notice that the filter bowl is painted chocolate brown and rest of the filter is black (tractor chassis power red) of course. So someone has replaced it with an older one and the question arises, is it the right size bowl? If it is wrong then my filling it up with oil to the line might be wrong and it could well be overfilled.

I wont use the thermostart until it gets to freezing. That will certainly help.

Thanks
Tim

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