Oil pressure

pooh · 25-07-2020, 08:23 PM

Help
I’ve had the starter motor fail on my recently rebuilt 2000 M900ie motor upto the starter fail I had oil pressure and the engine ran. A mate of mine gave me a starter motor which he had spare from when he had a 1994 M900 so I have fitted it this afternoon and luckily the engine didn’t start as I now have no oil pressure. Levels are ok has anybody got any ideas? The only casing I removed was the alternator cover so I’m confused as to what has happened.

Any ideas gratefully accepted.

Ian

26-07-2020, 10:21 AM

Never seen an engine with oil pressure till it is running. Yours did not start so how would it have oil pressure?

pooh · 26-07-2020, 10:36 AM

The bike had oil pressure prior to the starter failure, fitted new starter engine turns over but no oil pressure. It’s standard practice after an engine rebuild to turn the engine over without plugs to check oil pressure is there.

26-07-2020, 01:30 PM

Quote:

Originally Posted by pooh

The bike had oil pressure prior to the starter failure, fitted new starter engine turns over but no oil pressure. It’s standard practice after an engine rebuild to turn the engine over without plugs to check oil pressure is there.

No need to take that tone. I may not have rebuilt any bike, car or aircraft engines this year, but am not stupid and have done hundreds in the past. I can only read what you have written.
If you think that changing the starter has affected the oil pressure then that is fine by me.

Darren69 · 26-07-2020, 04:20 PM

Quote:

Originally Posted by BobT

No need to take that tone. I may not have rebuilt any bike, car or aircraft engines this year, but am not stupid and have done hundreds in the past. I can only read what you have written.
If you think that changing the starter has affected the oil pressure then that is fine by me.

What tone was that? I didn't see anything controversial

in any post

You've probably just lost the prime in the oil pump that's all.

Mr Gazza · 26-07-2020, 05:35 PM

This is quite mysterious!
You've obviously changed oil in the past with no problems, but do you fill the filter before installing it? maybe you didn't change it anyway in this instance?
Did you lean the bike to the right to operate on the starter? I have done this to re-fit the alternator cover as it keeps residual oil away from the gasket face.. Maybe that could let air into the pump?
I personally wouldn't release the cooler lines to check for flow as that is the direct feed to the big ends, and it's more likely to introduce air into that loop.
Possibly some oil drained down from the cooler if you did the right leaning thing?

I think I would try squirting some oil down the pressure switch hole, which might dislodge an air bubble, or might not.
You also get a good jet of oil aiming at the filler cap which is evident if you remove the cap. (and messy!)
I doubt any sealer would have found it's way to the pick up so quickly, and the strainer would stop it anyway.

I think the only way forward is to spin it for as long as you dare with the plugs out and see if you get a flow.

chris.p · 26-07-2020, 10:40 AM

Give Neil a ring at Cornerspeed.

http://cornerspeed.co.uk/

Mark64 · 26-07-2020, 10:41 AM

I've had a similar issue with two monsters, try removing the pipes to the oil cooler & turn the engine over with the plugs out, when oil is pumping out of the oil cooler pipes you know that you've got oil pressure.

pooh · 26-07-2020, 10:55 AM

Tried removing the oil pressure switch nothing coming through.

pooh · 26-07-2020, 02:01 PM

The question was originally can anybody who knows the 2v engine think of a reason ie have I done something inadvertently. Everything was ok upto the starter fail now it isn’t. There does not appear to be a link other than me draining the oil to change the starter.

Luddite · 26-07-2020, 03:28 PM

When you replaced the alternator cover, did you use Threebond (or similar)? If so, is it possible that some of it may have blocked an oilway?

rollo22 · 26-07-2020, 05:43 PM

Pooh,
Have a read of this he sorted his problem.
https://www.ducatimonster.org/thread...solved.169235/

pooh · 26-07-2020, 06:23 PM

Since last post I have removed oil pump to check all ok that appears fine. While oil pump off blew through oil ways (yes very messy) removed oil switch and turned over motor no oil at pressure switch. Gazza when I changed the starter motor I dropped all of the oil which had only been in for a week and 5 minutes running didn’t change filter as also new. From memory there are no oil ways through the alternator cover so can’t see threebond being the issue.

It’s looking as though I’m going to have to pull the engine out and split the cases again which will be really annoying.

Ian

chris.p · 26-07-2020, 08:20 PM

Quote:

Originally Posted by pooh

Since last post I have removed oil pump to check all ok that appears fine. While oil pump off blew through oil ways (yes very messy) removed oil switch and turned over motor no oil at pressure switch. Gazza when I changed the starter motor I dropped all of the oil which had only been in for a week and 5 minutes running didn’t change filter as also new. From memory there are no oil ways through the alternator cover so can’t see threebond being the issue.

It’s looking as though I’m going to have to pull the engine out and split the cases again which will be really annoying.

Ian

Ring Neil at Cornerspeed first.

chris.p · 27-07-2020, 07:39 AM

To be fair it sounds to me that the oil pump is not primed, as I said, Give Neil at Cornerspeed a ring.

25-07-2020, 08:23 PM	#1
pooh Lincolnshire Area Rep Join Date: Oct 2002 Location: Grimsby Bike: M900ie Posts: 471	Oil pressure Help I’ve had the starter motor fail on my recently rebuilt 2000 M900ie motor upto the starter fail I had oil pressure and the engine ran. A mate of mine gave me a starter motor which he had spare from when he had a 1994 M900 so I have fitted it this afternoon and luckily the engine didn’t start as I now have no oil pressure. Levels are ok has anybody got any ideas? The only casing I removed was the alternator cover so I’m confused as to what has happened. Any ideas gratefully accepted. Ian __________________ Slighty less brain cells than I was born with

26-07-2020, 10:36 AM	#3
pooh Lincolnshire Area Rep Join Date: Oct 2002 Location: Grimsby Bike: M900ie Posts: 471	Read the post again The bike had oil pressure prior to the starter failure, fitted new starter engine turns over but no oil pressure. It’s standard practice after an engine rebuild to turn the engine over without plugs to check oil pressure is there. __________________ Slighty less brain cells than I was born with

26-07-2020, 05:35 PM	#6
Mr Gazza Lord of the Rings Join Date: May 2013 Location: Norwich Bike: M900sie Posts: 5,984	This is quite mysterious! You've obviously changed oil in the past with no problems, but do you fill the filter before installing it? maybe you didn't change it anyway in this instance? Did you lean the bike to the right to operate on the starter? I have done this to re-fit the alternator cover as it keeps residual oil away from the gasket face.. Maybe that could let air into the pump? I personally wouldn't release the cooler lines to check for flow as that is the direct feed to the big ends, and it's more likely to introduce air into that loop. Possibly some oil drained down from the cooler if you did the right leaning thing? I think I would try squirting some oil down the pressure switch hole, which might dislodge an air bubble, or might not. You also get a good jet of oil aiming at the filler cap which is evident if you remove the cap. (and messy!) I doubt any sealer would have found it's way to the pick up so quickly, and the strainer would stop it anyway. I think the only way forward is to spin it for as long as you dare with the plugs out and see if you get a flow. __________________

26-07-2020, 10:55 AM	#9
pooh Lincolnshire Area Rep Join Date: Oct 2002 Location: Grimsby Bike: M900ie Posts: 471	Tried removing the oil pressure switch nothing coming through. __________________ Slighty less brain cells than I was born with

26-07-2020, 02:01 PM	#10
pooh Lincolnshire Area Rep Join Date: Oct 2002 Location: Grimsby Bike: M900ie Posts: 471	The question was originally can anybody who knows the 2v engine think of a reason ie have I done something inadvertently. Everything was ok upto the starter fail now it isn’t. There does not appear to be a link other than me draining the oil to change the starter. __________________ Slighty less brain cells than I was born with

26-07-2020, 10:21 AM	#2
BobT Guest Posts: n/a	Never seen an engine with oil pressure till it is running. Yours did not start so how would it have oil pressure?

26-07-2020, 10:40 AM	#7
chris.p Gold Member Join Date: Mar 2004 Location: lincoln Bike: No Bike Yet! Posts: 876	Give Neil a ring at Cornerspeed. http://cornerspeed.co.uk/

26-07-2020, 10:41 AM	#8
Mark64 Bronze Member Join Date: Nov 2014 Location: Hondon de los Frailes Bike: S4r Posts: 294	I've had a similar issue with two monsters, try removing the pipes to the oil cooler & turn the engine over with the plugs out, when oil is pumping out of the oil cooler pipes you know that you've got oil pressure.

26-07-2020, 03:28 PM	#11
Luddite Registered User Join Date: Aug 2011 Location: Southampton Bike: M1100evo Posts: 2,465	When you replaced the alternator cover, did you use Threebond (or similar)? If so, is it possible that some of it may have blocked an oilway?

26-07-2020, 05:43 PM	#12
rollo22 Moderator Join Date: Apr 2008 Location: Moreton-in-Marsh Bike: M1100evo Posts: 1,083	Pooh, Have a read of this he sorted his problem. https://www.ducatimonster.org/thread...solved.169235/ __________________ IF ALL ELSE FAILS READ THE INSTRUCTIONS

26-07-2020, 06:23 PM	#13
pooh Lincolnshire Area Rep Join Date: Oct 2002 Location: Grimsby Bike: M900ie Posts: 471	Since last post I have removed oil pump to check all ok that appears fine. While oil pump off blew through oil ways (yes very messy) removed oil switch and turned over motor no oil at pressure switch. Gazza when I changed the starter motor I dropped all of the oil which had only been in for a week and 5 minutes running didn’t change filter as also new. From memory there are no oil ways through the alternator cover so can’t see threebond being the issue. It’s looking as though I’m going to have to pull the engine out and split the cases again which will be really annoying. Ian __________________ Slighty less brain cells than I was born with

27-07-2020, 07:39 AM	#15
chris.p Gold Member Join Date: Mar 2004 Location: lincoln Bike: No Bike Yet! Posts: 876	To be fair it sounds to me that the oil pump is not primed, as I said, Give Neil at Cornerspeed a ring.