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Old 08-11-2010, 11:42 AM
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bbc 425 fuel filter issues

I'm trying to change the fuel filter on my 78 Caddy, it's got the filter on the front of the carb, I can see it. I can touch it, but I cannot get a damned wrench in there to get the nuts loose.

The A/C compressor is RIGHT in front of the carb, and it leaves very little room to work. Do I need to take the compressor off to get at it? If so, what the hell was GM thinking?!

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Old 08-15-2010, 11:10 AM
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Snap on has a wrench for that.It is a 12 point 1 inch with a gap at the end of the box part kind like a line wrench with the gap at the 6 o clock position if you held the wrench with the handle straight up (12 o clock.)it is made out of flat steel about 1/4 inch thick. Its just flat and skinny enough( like my ex girlfriend) to do the job.
You could take a 1 inch wrench and spend a few minutes to grind it down and cut a groove in the end to slip over the fuel line (3/8) . when you take it apart notice that the spring comes out last so it goes back in first.
Good luck
Necessity is the mother of invention
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Old 08-15-2010, 12:58 PM
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Quote:
Originally Posted by latech
Its just flat and skinny enough( like my ex girlfriend) to do the job.
hahahaha.
Rodillac, just take the compressor off the bracket and move it out of the way. What is it like 2 bolts or something? You don't even need to disconnect any hoses or anything, just move it out of the way. This way you don't have to buy any special special tools.
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Old 08-15-2010, 06:17 PM
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hee hee big dog, You are right there are 3 bolts 2 in front and one in the rear bracket.should be able to move it over enough to get to fuel line. Good looking out there. any way to save a buck is a better way. Havent seen an old caddy for a while.
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Old 08-21-2010, 06:51 PM
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Thanks for the replies. I finally got around to taking the compressor off, which wasn't as easy as I thought it would be.... After all that, I then discovered my 1" wrench is missing, and nothing is open in this town after 6.
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Old 08-21-2010, 06:53 PM
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Also, there were two bolts up front, and two in the back.
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Old 08-22-2010, 09:22 PM
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So, here's the new problem...

I can't get each bolt to turn independently. If I turn one, the whole fuel line will twist. I've tried for at least an hour to get it off of there, but it just keeps twisting the fuel line.

Now what?
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Old 08-22-2010, 09:30 PM
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Quote:
Originally Posted by Rodillac
So, here's the new problem...

I can't get each bolt to turn independently. If I turn one, the whole fuel line will twist. I've tried for at least an hour to get it off of there, but it just keeps twisting the fuel line.

Now what?
You have to hold the filter housing from turning before you can use a 5/8 line wrench to loosen the fuel line.

Hold the housing w/a large Crescent or a pair of channel locks if you don't have a 1" open end wrench.

Most filter housings have a nylon gasket at the very end of the housing, on a small lip before the threads start. Be sure the gasket is there, in good shape (not pinched during a previous filter change), and in the correct position when you reinstall the filter housing onto the carb. Do not cross thread it- it's fairly easy to do.
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Old 08-22-2010, 09:40 PM
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That's what I've been trying. The smaller bolt just turns the whole fuel line.
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