fuel pump question
Thread Starter
Racer
Joined: Dec 2007
Posts: 445
Likes: 2
From: Thomastown Mississippi
fuel pump question
I replaced the heater hoses on my 77 Vette today, and after installation, I got under the car to check for leaks. With the engine running, I happened to notice that my fuel pump moves in and out about a quarter of an inch. I guess it's the pumping action on the inside that causes this. It's probably the original 31 year old pump. Is this normal to see the movement from the outside, or is something worn out and needing replacement?? It's not leaking, and the bolts are tight. When I say it's moving, I mean it has a rythm type movement to it, while the engine is idling. Thanks,
Kenny
Kenny
Thread Starter
Racer
Joined: Dec 2007
Posts: 445
Likes: 2
From: Thomastown Mississippi
Thanks shark, yea this thing probably is a little possessed.
I went down and checked it again, and the pump feels tight. With the engine running, it does actually move though. It's like a pulse type movement. I'll recheck everything tomorrow when it's light out. The car runs fine and I don't see a leak anywhere, so it must be OK. I just never had noticed the movement before.
Kenny
I went down and checked it again, and the pump feels tight. With the engine running, it does actually move though. It's like a pulse type movement. I'll recheck everything tomorrow when it's light out. The car runs fine and I don't see a leak anywhere, so it must be OK. I just never had noticed the movement before.Kenny
Thread Starter
Racer
Joined: Dec 2007
Posts: 445
Likes: 2
From: Thomastown Mississippi
Well, after finally getting under the car with some good light and a wrench, I found the problem. The two bolts holding the pump on WERE loose. Tightened 'em down and no more wobble. Thanks guys.
KC
KC
Safety Car
Joined: Jun 2004
Posts: 4,652
Likes: 80
From: Lakeland Florida
Good thing you found that when you did. Can you imagine one of them coming out when you were driving? While you were there did you check the condition of the hoses. If they are getting old and cracked now would be a good time to replace them.
kdf
kdf
Thread Starter
Racer
Joined: Dec 2007
Posts: 445
Likes: 2
From: Thomastown Mississippi
Matter of fact I did go ahead and replace the lines coming off the fuel pump while I was under there. They were probably the original lines. I've only had the car a few months, and everytime I start tinkering with it, I find something else that needs replacing. It's getting there though. Getting better everyday. The car had sat unused for 5-6 years before I bought it and the lady that owned it before me obviously did nothing but drive it. I've got a list of new parts a mile long already installed on it, and it's just now starting to feel reliable to me. I guess all of these cars are a work in progress. Fun though. Thanks for the advice on the fuel lines.
KC
KC
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