Ticking noise at idle - Defender Source
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  #1  
Old March 1st, 2005, 04:30 AM
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Brian Ellis
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Ticking noise at idle

Hey all!
I just got new oil cooler lines, 2 new belts and the timing adjusted. Now I have a light ticking noise at idle coming from the engine. I've got sufficent oil level, so my first guess is oil pressure, right? Is there an adjustment port/valve, because the manual seems to only indicate remove/inspect/rebuild the oil pump.
In my case that probably means replace the pump. $$$$

Is this damaging to the engine? I need to drive it about an hour to get back to the place.
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  #2  
Old March 1st, 2005, 10:36 PM
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What oil are you running? You may need to go a little heavier, it's much easier to try that then to rebuild the pump. The pump isn't that hard to rebuild, just 8 12 point 8mm bolts holding it on, then pull the 2 gears out pack them with vasoline replace some of the other parts to the pump throw on a new gasket and put it back on. You can get a rebuild kit from Northeast British Parts or DAP.
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first then ask questions later! The loose nut behind the wheel
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Old March 2nd, 2005, 08:37 AM
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Thanks, Mike
SO there is no adjustment valve, to increase or decrease pressure, right? It's a set setting, either working or not? Also could a valve or lifter inside the engine be doing this? I never had the noise before (the above listed servicing).
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Old March 2nd, 2005, 12:27 PM
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There is a spring inside the pump that regulates pressure. If the spring is bad or getting on it's way it may hold less pressure, but your oil pressure light should come on if it gets too low.
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first then ask questions later! The loose nut behind the wheel
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Old March 2nd, 2005, 06:07 PM
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Check the exhast manifold bolts first, they loosen easily and can cause a ticking.
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Old March 3rd, 2005, 08:13 AM
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Anyone know the torque specs on the exhaust manifold bolts?
Thanks,
Eric
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Old March 3rd, 2005, 08:32 AM
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Curiously, the ticking noise began when I got new exhaust manifold gaskets installed (this past weekend). One side had a hole in it. So both sides are tight and new. Mechanic thinks it might be a loose cam washer, on the front of the block which he said was to be replaced as a recall item back in the 1990's. Land Rover said I had no open recalls against my VIN. We both agree the oil pressure is fine (or I'd get the light).

The ticking seems to get going when the oil heats up, not right at first. So I will put in some heavier weight oil. Any thoughts on Lucas Oil Stabilizer as an additive in a D-90? I feel thicker oil may only be camoflauging the problem, if it works. ????
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Old March 3rd, 2005, 02:15 PM
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FYI, I had an exhaust manifold gasket leak on my Disco that sounded exactly like a bad engine knock. 'may want to check that the gasket was installed properly.
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  #9  
Old March 3rd, 2005, 03:55 PM
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I had a tick that turned out to be a crack in the top of the Y, right at the manifold. Welded it up and tick disappeared.
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Old March 3rd, 2005, 08:48 PM
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Get a piece of conduit a couple feet long and 1/2 inch in diameter and listen around the engine to isolate the tick. It very well could be an exhaust leak - I've got one myself. The bolts look so rusty it scared the mechanic away from replacing my exhaust manifold gasket when he did my new exhaust...

If you are really worried about oil pressure you could run a mechanical gauge - the electric gauges are not worth a damn and idiot lights are just that - it's idiotic to wait until they light up to address the problem I plan to install a T adapter and run the idiot light and a mechanical gauge -- just in case something bad happens and I can't/don't see the gauge....
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  #11  
Old March 5th, 2005, 12:11 AM
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Here's my 2cents on the ticking sound. When i bought my 97 SW it had a noticeable ticking sound that seemed to eminate from the passenger side. Turns out the manifold was missing a stud, po broke it off, drilled out and put bolt with nut, needless to say it sounded like it was coming from the engine. Installed new gaskets and manifold figured i'd fixed it and shortly after warm up the sound came back . Bought a stethoscope and started listening. Long story short, the last two rockers on the passenger side were very sloppy, i could lift the rockers and turn them ever so slightly. pulled the rocker shaft and disassembled to discover the shaft was very worn. apparently this is caused by poor oil/lack of changes. Installed new rocker shafts, ticking gone.
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  #12  
Old March 10th, 2005, 11:20 AM
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I had the same thing happen and it was the manifold gasket on one side- very easy to change and the ticking should stop- good luck
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