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Armsrtong 1/12 horse pump noise

My armstrong pump is making a lot of rattling noise from teh middle bearing area (i have been adding the drops of oil 2 -3 times a season), and it is about 4 years old, pumps the water from my boiler to the rads in the house. could the bearing be shot already ?

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I bled air from the rads attached to the system and now the noise is gone from my circulator pump

Posted on Dec 04, 2008

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Posted on Jan 02, 2017

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Caridad, there could be a lot of things making noises from engine, causes could be low on oil, belts/tensioner/water pump bearing, worn internal engine bearings, etc. You will have to have a good Technician diagnose and estimate repair. Check the attached links,instruction and guides, Good luck
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Oil Gauge Dropping to 5 psi


Hi again Kelea, I'm glad to help!

Kelea, if you do not hear a lot of engine rattling noises then I would say your "Oil Pump" is OK and you need to replace the "OIL SENDING UNIT" which you can buy at Autozone. CAUTION: If you do hear a lot of rattling noises coming from your engine then I'd suggest having someone check the oil pressure. If the oil pressure is low then it could be all kinds of things that can cause low pressures. From engine bearings, to restrictions, to the oil pump itself. I would start with the oil sending unit first and see what your oil pressure looks like. If your oil pressure is good after replacing the sending unit then I'd consider never taking my vehicle back to the shop that told you it was the pump. Hope this helps and have awesome day.

Feb 25, 2013 | 1999 Chevrolet Blazer

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When I am stopped my oil pressure drops a lot


More detail needed wen the oil pressure is down and wen is ok.

Mar 04, 2011 | 1993 Mitsubishi Eclipse

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Oil pressure drop to 20 lbs lifter start to rattle


20lbs really is not enough to cause the lifters to make noise,the gauge maybe wrong The oil pump screen maybe stopped up,and the rod and main bearings maybe worn.If this was helpful,please rate,thank you.

Jun 13, 2010 | 1999 Chevrolet C1500

1 Answer

The bike is a 06 streetglide when you throttle the bike under load the oil pressure drops what would be the cause


I don't know too much about the oil pumps in the Twin Cam engines. I have never worked with one of them but I've got extensive experience with the older type pump used on the Shovelheads and Evolution engines.

A Harley engine employs a high volume low pressure oiling system. The old Shovelheads would actually show no oil pressure when idling hot with most gauges. The oil pressure switch would cut the light off at four pounds of oil pressure. A Harley engine will not hold a lot of oil pressure because the engine is built using roller bearings instead of shell bearings.

As long as the tappets are not rattling, you don't have a problem with oil pressure. If your oil pressure drops too low, the tappets are hydraulic and they will rattle like hell. There will be no doubt in your mind as to the problem.

Now, back to your question as to why the oil pressure on your bike drops when accelerating under a load, I have no idea.

Good Luck!
Steve

May 18, 2010 | 2008 Harley Davidson FLHX Street Glide

1 Answer

Sounds like a bearing going bad where do i look first


a rod bearing makes noise when you are just barely pulling .. it likely will quiet down as you accelerate and decellerate .. you can rev the engine up a bit then let up on the gas just enough to keep that rpm ..a rod bearing will rattle a lot then ... if a thud like noise happens when you are accelerating . then it could be a main bearing .. if the noise is there all the time and sounds like a rattle then its more likely a valve problem .. old oil can cause the lifters to stick and rattle continuously .. if the noise you hear is a squeal then you could have a bad bearing in the idler pully (for fan belt) or alternator .. if thats the case you can put a drop of oil on the bearings one at a time until the squeal goes away .. that will identify which part is going bad .. there are other less likely bearings that can go bad .. like the cam, distributer, air compressor and water pump .. each have their own type noise ..

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I have an Isuzu Rodeo 3.2 L when the engine is cold, motor sound good oil pressure is between 30 and 55 as it starts to get hotter oil pressure drops and the rocker arms start to rattle. When engine is...


The oil pressure in an engine will naturally drop off as the engine warms up. If the oil pressure is dropping too much it could be cause by several things. I don't know how many miles your engine has on it but the oil pump may be getting weak and may need to be replaced. Worn out cam bearings or crank bearings can also cause low oil pressure. Sounds like your engine may be ready for a rebuild

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1 Answer

My pump is making a noise that I am trying to get rid of. I added the oil to the top of the pump (is this correct)? I have been trying to get rid of this noise for three days..please help


you should call and contact Bell & Gossett .(847)966-3700 Address: 8200 N. Austin Av. Morton Grove,IL 60053. Ask them that if the part no # 103400 Price $260 fits for your pump Good luck.

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