93 z28 fuel pump problems HELP PLEASE!!!!!!! - Team Camaro Tech
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post #1 of 4 (permalink) Old Apr 6th, 01, 11:18 AM Thread Starter
Join Date: Apr 2001
Location: Troy, MI, USA
Posts: 2

I have a 1993 camaro Z28 with a 350 5.7 liter v8. My car will start only for a second before it stalls out. I have dual chamber flowmasters and my catalytic converter removed. I was told by a shop that it would cost $1000 to fix because of the custom exaust. they said they would need to cut the exaust off and weld it back on after the job is done. Is there any truth to this? Please help me and only respond if you know for sure, i don't want to be misled any longer. Thank you
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post #2 of 4 (permalink) Old Apr 6th, 01, 02:36 PM
David Pozzi
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Join Date: Nov 1999
Location: Central California, USA
Posts: 10,074

Sounds too expensive to me.
If the fuel pump must be changed they will have to drop the tank.
I did my 85 Z/28 with single exhaust pipe and didn't have to remove the muffler or pipe as I remember.
You might call around and ask some shops.
Where are your tailpipes located, and are there two or one?
Make sure the pump is getting juice and the system is properly diagnosed before doing the pump.

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post #3 of 4 (permalink) Old Apr 6th, 01, 03:21 PM
Join Date: Aug 1998
Location: Waldorf Md. USA
Posts: 3,280

Hate to say it but they are correct The entire rear axle assembly needs to come down on those cars to get the tank out and replace the pump. Probably a good 10 hour job without the custom exhaust.
The other problem is that it is illegal for any shop to re-install the exhaust system as you have it. Its a VERY healthy fine if they do and get caught.

Bill Koustenis
Advanced Automotive Machine
Waldorf Md
1971 Chevelle "Heavy Chevy" original owner
1973 Z-28 ..one family car...Brother bought it new in 73

[This message has been edited by BillK (edited 04-06-2001).]
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post #4 of 4 (permalink) Old May 21st, 02, 11:49 AM
Join Date: May 2002
Location: columbus,IN,U.S.
Posts: 1
There is other ways around this problem. If you pull up the fabric in the rear hatch there is a precut cirular panel that can be removed so as to access the fuel pump. Recommend trying that first and when finished have a welder weld the cover shut. I have had the same problem with my 93 camaro z28 so it should fix your proplem and the price.
one other thing if you have been running anything under 93 octane that is the cause of the fuel problem try running complete fuel line cleaner in the fuel for a while. But first drain fuel tank.
hope ive been some help.
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