C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

'92 Fuel filter removal problem

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Old Jun 23, 2011 | 05:52 PM
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Default '92 Fuel filter removal problem

I have a 92 coupe LT1 and I need to replace the fuel filter. I cannot reach it to remove it, mostly because the exhaust system (catalitic converter I think) is in the way. Since I cannot get a wrench on it, will I have to drop the front of the exhaust system to get to it, or is there a better way?
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Old Jun 23, 2011 | 06:28 PM
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Man...we need a sticky on changing the fuel filter. Anyway, check out a write up I did on how to do it fairly painlessly. (Clicking on the picts will show larger versions...need to update the web HTML at some point)

http://corvette.spectraaccess.net/fuel/

Last edited by bac22; Jun 23, 2011 at 06:32 PM.
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Old Jun 23, 2011 | 06:44 PM
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Originally Posted by bac22
Man...we need a sticky on changing the fuel filter. Anyway, check out a write up I did on how to do it fairly painlessly. (Clicking on the picts will show larger versions...need to update the web HTML at some point)

http://corvette.spectraaccess.net/fuel/
I recenty replaced filter on my 91. the old one was maybe original, don't know history, but it had no seals, and new one tightened in same way, no leaks.
I did check it carefully to see how it would seal, and concluded it was a metal to metal seal, as most carb connections had.
anyone know if the 91 had seals?

saludos, joe
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Old Jun 23, 2011 | 11:57 PM
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I had read the article mentioned before asking this question, and it did not help. There simply is not enough room to remove the filter fittings with any fuel line type wrench that I have ever seen. I can get a wrench on it, but there isn't enough room to get enough leverage to turn it. The fittings are very, very tight. The only option I see is to drop the front of the exhaust to get some working room.

Am I missing something obvious?
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Old Jun 24, 2011 | 01:51 AM
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Originally Posted by myoda
I had read the article mentioned before asking this question, and it did not help. There simply is not enough room to remove the filter fittings with any fuel line type wrench that I have ever seen. I can get a wrench on it, but there isn't enough room to get enough leverage to turn it. The fittings are very, very tight. The only option I see is to drop the front of the exhaust to get some working room.

Am I missing something obvious?
Heres a trick I learned, Undue both bottom line (feed and return) then undo the bolt on bracket holds filter.

Then go up the engine and undo the pressure fitting on both line ( special tool needed) then any bolt holding line down on engine ,then pull line and filter up from the top then you can undo the top fitting on filter out of car and also put new filter on.

Then reverse process to put back together

Last edited by Repzard; Jun 24, 2011 at 01:55 AM.
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Old Jun 24, 2011 | 06:04 AM
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Originally Posted by Repzard
Heres a trick I learned, Undue both bottom line (feed and return) then undo the bolt on bracket holds filter.

Then go up the engine and undo the pressure fitting on both line ( special tool needed) then any bolt holding line down on engine ,then pull line and filter up from the top then you can undo the top fitting on filter out of car and also put new filter on.

Then reverse process to put back together
What is the special tool needed? I will be doing mine soon and would like to have everything needed before I start the job. Thank you.
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Old Jun 24, 2011 | 07:49 AM
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Originally Posted by myoda
I had read the article mentioned before asking this question, and it did not help. There simply is not enough room to remove the filter fittings with any fuel line type wrench that I have ever seen. I can get a wrench on it, but there isn't enough room to get enough leverage to turn it. The fittings are very, very tight. The only option I see is to drop the front of the exhaust to get some working room.

Am I missing something obvious?
Well on my 96 those steps I list in the post worked fine, maybe a 92 is different, but I didn't think so.
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Old Jun 24, 2011 | 07:56 AM
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you don't need to remove the two pressure lines, just the hold down and pull it up and take off the top line.The real problem is not getting gas all over the place. the filter replacement is a piece of cake.
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Old Jun 24, 2011 | 08:05 AM
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Originally Posted by myoda
I have a 92 coupe LT1 and I need to replace the fuel filter. I cannot reach it to remove it, mostly because the exhaust system (catalitic converter I think) is in the way. Since I cannot get a wrench on it, will I have to drop the front of the exhaust system to get to it, or is there a better way?
Refer to my old thread "Changing the fuel filter" for my solution to this problem. My car is a '92 convertible, so the access is even more limited than the coupe.
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Old Jun 24, 2011 | 11:43 AM
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I think making the little short stubby socket/wrenches is probably the answer. I will make a couple and see what happens.
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