Squeak from fuel pump??
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Le Mans Master
Joined: Nov 2015
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From: Really Central IL Illinois
Squeak from fuel pump??
The 68RS was running like it had one cylinder dead. Checked the ignition and finally found a missing cap on the vacumn port behind the carburetor. With that resolved, I began hearing a squeak like that of a wagon wheel needing grease. It squeaks at about 1/2 second intervals with the engine at idle. I checked the belt driven accessories but then moved to the fuel pump.
It sounds like it is from the pump. It is the new style pump from the 67 and up era.
So, has anyone ever had a fuel pump squeak? It is rather loud or I would not be able to hear it.
Remember, I am bordering on deaf, dumb, and blind, but have only achieved the dumb honors especially when I talk.
Thanks All
Ron
It sounds like it is from the pump. It is the new style pump from the 67 and up era.
So, has anyone ever had a fuel pump squeak? It is rather loud or I would not be able to hear it.
Remember, I am bordering on deaf, dumb, and blind, but have only achieved the dumb honors especially when I talk.
Thanks All
Ron
Thread Starter
Le Mans Master
Joined: Nov 2015
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From: Really Central IL Illinois
I have had a few fail, but haven't heard a squeal. I have another one on the shelf, I'll swap it out and see if that rids me of the squeak. Thanks for the reply.
Safety Car
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Are you sure it is not the water pump? Take the belt off and see if the squeak disappears.
Racer
Joined: Aug 2019
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From: S E Ohio
Remove the vacuum cap you just installed and see if the squeek stops. If it does you may have a closed/clogged pvc system and the squeek is air trying to enter the engine somewhere due to engine vacuum. I had that once long ago.
good luck
good luck
Thread Starter
Le Mans Master
Joined: Nov 2015
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From: Really Central IL Illinois
Thanks 'Gentlemen,
I removed the belts again and started it up - No Noise. I reinstalled the belts and started it up - no noise. I let it idle a bit, but still - no noise.
Seems I have a ghost under the hood. I can't take it out to really warm it up for the rest of the week as other things are still on my list. I'll have to let it ride for now.
Update: Well, it is back after a drive to get it up to temperature. Sounded like it is coming from the pan, so I put it up on the lift and ran engine, but the noise disappeared once again. Used a hose and screw driver, but no noise. Looks like I may need to drive it to failure or until it becomes constant.
Thanks again,
Ron
I removed the belts again and started it up - No Noise. I reinstalled the belts and started it up - no noise. I let it idle a bit, but still - no noise.
Seems I have a ghost under the hood. I can't take it out to really warm it up for the rest of the week as other things are still on my list. I'll have to let it ride for now.
Update: Well, it is back after a drive to get it up to temperature. Sounded like it is coming from the pan, so I put it up on the lift and ran engine, but the noise disappeared once again. Used a hose and screw driver, but no noise. Looks like I may need to drive it to failure or until it becomes constant.
Thanks again,
Ron
Last edited by R66; Mar 13, 2025 at 05:37 PM.
Safety Car
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Ron,
Get some silicone dielectric grease and put about 1/2" long the diameter of a caulk gun (3/8" diameter) and wipe it on each belt in just one spot. It will distribute around all by itself when you run the engine and will lubricate the belt and pulley"s. See if that cures the noise.
Get some silicone dielectric grease and put about 1/2" long the diameter of a caulk gun (3/8" diameter) and wipe it on each belt in just one spot. It will distribute around all by itself when you run the engine and will lubricate the belt and pulley"s. See if that cures the noise.
Le Mans Master
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Ron,
Get some silicone dielectric grease and put about 1/2" long the diameter of a caulk gun (3/8" diameter) and wipe it on each belt in just one spot. It will distribute around all by itself when you run the engine and will lubricate the belt and pulley"s. See if that cures the noise.
Get some silicone dielectric grease and put about 1/2" long the diameter of a caulk gun (3/8" diameter) and wipe it on each belt in just one spot. It will distribute around all by itself when you run the engine and will lubricate the belt and pulley"s. See if that cures the noise.
Dan
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Thread Starter
Le Mans Master
Joined: Nov 2015
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From: Really Central IL Illinois
I'll have to run to town and get some silicone, thanks for the tip tbarb. I may have found a smoking gun, the power steering fluid was down to the cold mark when it was hot. Might be the bearing in the P/S pump is transmitting noise thru the belts. But the strange thing is the noise is loudest on the passenger's side near the fuel pump and I could hear no noise on the P/S pump.
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Spacing between the upper & lower pulleys okay?
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Le Mans Master
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From: Really Central IL Illinois
Belts and belt spacing and all look fine. The car has 130K miles on it, so I expect some maintenance and am wondering if the pump may be making an intermittent noise although I can't hear it at the pump. I can't recall when I last put a belt on the P/S pump. With the car on the ground, it seems to be in the pan just below the fuel pump. But when I put it on the lift, it makes no noise using a stethoscope or hose as the noise went away.
Safety Car
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From your description of the noise, it doesn't seem to be the PS pump. Low fluid makes a constant hum or buzz that changes pitch with engine speed, and gets louder when you turn the steering wheel. And the fluid has to be low enough so that the pump draws air. Hot fluid at the cold mark probably isn't that low.