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Author Topic: Engine trouble  (Read 765 times)

Offline Angus

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Engine trouble
« on: June 11, 2007, 10:40:05 AM »
Hey there you all engine guys.
I have a problem with a brand new engine. It's a 95hp Perkins turbo diesel in a tractor.
Anyway, it's still being run in, and I notice that while ploughing the lubricant temperature seems to go up.
Water is fine, but the oil filter feels a tad hot, and after some driving the lube light starts blinking. Drive some more, and you will need increased RPM to turn it off.
Keep it idle for some time and everything goes back to normal.
Start it cold and everything is fine with a light job.
So, the theories I am working with are:
1. Poor quality lube
2. Wrong or faulty filter
3. Faulty pump.
4. Meter is a tad too sensitive.

Any thought on this?
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It was very interesting to carry out the flight trials at Rechlin with the Spitfire and the Hurricane. Both types are very simple to fly compared to our aircraft, and childishly easy to take-off and land. (Werner Mölders)

Offline FrodeMk3

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Engine trouble
« Reply #1 on: June 11, 2007, 10:55:09 AM »
Angus, is this motor in a brand new machine, or a rebuild of an older motor?

Also, if it is a rebuild, and the motor was in-framed, or completely removed and stabbed back in, check and make sure that if it has an oil cooler, make sure that it's hooked up.

Caterpillar used Perkins' engines in it's 416-series backhoe's, I've used plenty of them.
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Offline Angus

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Engine trouble
« Reply #2 on: June 11, 2007, 11:23:19 AM »
It's a completely new engine, with Turbo, fuel injection and everything new.
But I think the sensor is an old one.
The oil pump is built-in so it's also new.

Just got a message from the seller, he recommended that I do not use 5W40 oil, but 10W40. I had 15W40 before. Wonder why, - since the 5-40 is only thinner when cold, right? After all it's a specialized oil for high temps and turbos :confused:
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It was very interesting to carry out the flight trials at Rechlin with the Spitfire and the Hurricane. Both types are very simple to fly compared to our aircraft, and childishly easy to take-off and land. (Werner Mölders)

Offline FrodeMk3

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Engine trouble
« Reply #3 on: June 11, 2007, 02:39:53 PM »
Keep an eye on it-Change the oil to what the dealer recommends.

look at the oil lines to and from the turbo. Excessive turbo tempertures might be the culprit. Also, once the motor and turbo break in, The oil temps might drop to normal.
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Offline Angus

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Engine trouble
« Reply #4 on: June 12, 2007, 06:26:33 AM »
Come to think of it, the oil connection to the turbine was leaky when it was new, and I had to tighten it. But if the turbine starves it's toast before you know it. This one breaks in on 1200 rpm. approx.
Putting it into light work today, will see what happens and post.
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It was very interesting to carry out the flight trials at Rechlin with the Spitfire and the Hurricane. Both types are very simple to fly compared to our aircraft, and childishly easy to take-off and land. (Werner Mölders)

storch

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Engine trouble
« Reply #5 on: June 12, 2007, 06:50:42 AM »
what is the oil temp at operating revs?
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Offline lazs2

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Engine trouble
« Reply #6 on: June 12, 2007, 08:07:11 AM »
don't diesels cause global warming?

lazs
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Offline Angus

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Engine trouble
« Reply #7 on: June 12, 2007, 09:39:39 AM »
I do not have a readout of the temps, just the light. So the first action is to install a new sensor. If it keeps flickering none the same, something is definately wrong, and then I need some special equipment for an accurate measurement.
And Lazs, lets say that this engine works on the noble cause of coating barren land with gras, which should tie down CO2 in the long run :D
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It was very interesting to carry out the flight trials at Rechlin with the Spitfire and the Hurricane. Both types are very simple to fly compared to our aircraft, and childishly easy to take-off and land. (Werner Mölders)

Offline Traveler

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Engine trouble
« Reply #8 on: June 12, 2007, 02:43:42 PM »
Just a thought, they did put the right size oil filter on it, correct?
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Offline Angus

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Engine trouble
« Reply #9 on: June 12, 2007, 04:29:51 PM »
You may have a point, since it is not an original part.
I have already got a new one.
My tests start tomorrow.

BTW, have been delayed in this business due to the manning of a very big John Deere,- some 300 hp I think. The whole monster weights some 20 tonnes (with accessories) and is a sweeeeeet ride. I am harrowing some 16 feet net across, but at a rather tedious speed of 3 mph. Slower than a fishing trawler, who pulls the dragnets at 5 kts....
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It was very interesting to carry out the flight trials at Rechlin with the Spitfire and the Hurricane. Both types are very simple to fly compared to our aircraft, and childishly easy to take-off and land. (Werner Mölders)

storch

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Engine trouble
« Reply #10 on: June 12, 2007, 04:38:59 PM »
Quote
Originally posted by Angus
I do not have a readout of the temps, just the light. So the first action is to install a new sensor. If it keeps flickering none the same, something is definately wrong, and then I need some special equipment for an accurate measurement.
And Lazs, lets say that this engine works on the noble cause of coating barren land with gras, which should tie down CO2 in the long run :D
buy a temp stik.  you can run it into the oil through the dipstick tube and they are accurate.  it's a must have tool for anyone operating equipment. those lights and sensors on diesels today aren't worth a cent.  you must shut down the engine then check the temp do not run the engine with the temp stik in.
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Offline Engine

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Engine trouble
« Reply #11 on: June 12, 2007, 04:48:03 PM »
I'm not having any trouble, and constantly seeing this thread title as I'm looking for good threads to read is starting to freak me out.
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storch

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Engine trouble
« Reply #12 on: June 12, 2007, 04:48:47 PM »
Quote
Originally posted by Engine
I'm not having any trouble, and constantly seeing this thread title as I'm looking for good threads to read is starting to freak me out.
buy a temp stik and insert it
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Offline Engine

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Engine trouble
« Reply #13 on: June 12, 2007, 06:31:21 PM »
Are you a mechanic offering to service me?
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Offline stantond

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Engine trouble
« Reply #14 on: June 12, 2007, 07:41:34 PM »
Personally, I would buy an IR temperature reading gun.  I've always wanted one but not had a good excuse, err reason to buy one. Generally, if your coolant isn't getting too hot then neither is the oil.  Both oil and coolant cool the engine.

Myself (again just my opinion), I would get a manual for the engine and find out the manufacturers specifications for the oil filter and type of oil recommended.  I would then change the oil and oil filter.  Any questions and both are changed so they are not an issue.  However, if you can feel the oil filter without burning yourself then it's not above 150 deg F ( 65C) which isn't hot.  

The lube light blinking is a concern.  That is generally a pressure switch indicating low oil pressure.  Low oil pressure is bad.  Change the oil & filter.  That's the least expensive thing you can do (other than asking for opinions).
« Last Edit: June 12, 2007, 07:45:09 PM by stantond »
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