Lost fuel pump - what damage done? - Team Camaro Tech
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post #1 of 12 (permalink) Old Aug 13th, 08, 08:38 PM Thread Starter
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Ted
 
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Lost fuel pump - what damage done?

On my way to pick up my son from football practice my 69 died on me just as I pulled into the school parking lot. What happened as I see it is that the 2 bolts that hold the fuel pump on had worked their way out. It is just kind of hanging there. So I guess what my question is what damage if any might have happened? Do you think the fuel pump rod might have gotten bent? Any damage to the cam? The motor cranks over fine. That's what made me think I wasn't getting any fuel, when I noticed the pump kind of cocked out of the opening.
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post #2 of 12 (permalink) Old Aug 13th, 08, 08:52 PM
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Re: Lost fuel pump - what damage done?

I would guess everything is fine. I can't see the pump rod getting bent or the cam hurt. Bolt er back up in there and crank er over!





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post #3 of 12 (permalink) Old Aug 13th, 08, 09:02 PM Thread Starter
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Re: Lost fuel pump - what damage done?

Quote:
Originally Posted by JimM View Post
I would guess everything is fine. I can't see the pump rod getting bent or the cam hurt. Bolt er back up in there and crank er over!
That's what I was thinking, just wanted to make sure. Do you use Loctite thread sealer or anything to hold them in?
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post #4 of 12 (permalink) Old Aug 13th, 08, 09:03 PM
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Re: Lost fuel pump - what damage done?

Quote:
Originally Posted by JimM View Post
I would guess everything is fine. I can't see the pump rod getting bent or the cam hurt. Bolt er back up in there and crank er over!
i agree, that pushrod is a pretty hefty hunk of metal

if anything the cam probably pushed the rod up and it stuck there
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post #5 of 12 (permalink) Old Aug 13th, 08, 09:13 PM Thread Starter
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Ted
 
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Re: Lost fuel pump - what damage done?

What's the bolt size?
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post #6 of 12 (permalink) Old Aug 13th, 08, 09:35 PM
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Re: Lost fuel pump - what damage done?

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Originally Posted by tgifford5 View Post
What's the bolt size?
top or bottom bolts?
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post #7 of 12 (permalink) Old Aug 14th, 08, 06:51 AM
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Brian
 
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Re: Lost fuel pump - what damage done?

Those bolts shoud be special hardened steel bolts. I had to purchase a pump and bolts for mine. Someone had instaled an electric fuel pump, and had used a block off plate.

I have owned 3 69 Z/28s: Garnet Red 30,000 mi unrestored.
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post #8 of 12 (permalink) Old Aug 14th, 08, 06:58 AM
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Re: Lost fuel pump - what damage done?

The bolts that hold the pump on are regular 3/8-16 bolts, nothing special. I'm surprised you didn't notice an oily mess appearing before your pump bolts had backed all the way out.

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post #9 of 12 (permalink) Old Aug 14th, 08, 12:25 PM
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Re: Lost fuel pump - what damage done?

yeah i would put money on the fact that you did no damage that push rod would just fall down and rest against the plate and the cam lobe would just have nothing to push against... i can't even see how that would incurr and damage whatsoever unless you managed to drain your engine of oil through the gaping hole in your block where the pump used to be.. but so little oil makes its way in there you would probably have to drive a hell of a long way for that to happen

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post #10 of 12 (permalink) Old Aug 14th, 08, 01:17 PM
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Re: Lost fuel pump - what damage done?

I'm a little concerned as to how/why those 2 bolts "worked their way out"!!??.....I believe we're dealing with a couple stripped bolt holes!.....How could these 2 bolts, just suddenly, loosen up?....This would have to be a slow process, over time, and you should have been able to notice a drop in fuel pressure and also oil leakage!
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post #11 of 12 (permalink) Old Aug 14th, 08, 01:40 PM Thread Starter
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Re: Lost fuel pump - what damage done?

Quote:
Originally Posted by Badbird View Post
I'm a little concerned as to how/why those 2 bolts "worked their way out"!!??.....I believe we're dealing with a couple stripped bolt holes!.....How could these 2 bolts, just suddenly, loosen up?....This would have to be a slow process, over time, and you should have been able to notice a drop in fuel pressure and also oil leakage!
I would not be able to notice a drop in fuel pressure since I do not have a fuel pressure guage. As far as oil leakage everything would have been blocked off until the pump fell forward once the last bolt fell out. But I am going to check and see about the possible stripped holes. I believe that it could have loosened over time. How many of us look down at the pump and check to see if the bolts have loosened up? It is kind of down and out of mind.
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post #12 of 12 (permalink) Old Aug 14th, 08, 02:05 PM
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Re: Lost fuel pump - what damage done?

Quote:
Originally Posted by tgifford5 View Post
the last bolt fell out.

Just fell out!!....This is just mind boggling!!
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