I could't replace Fuel Filter!

89 automatic Fuel injection. I could't replace fuel filter.
The mounting bolt on outbound fuel line is stucked. I couldn't move
this damn thing. I tried about hour. The damn thing is so stuck.
Someone told me spread WD-40. I did that but no help.

 

try an actual penetrating oil. Zep 45 or something else. WD40 is NOT
penetrating oil.

 

My 91 Civic's fuel filter bolts have given me trouble as well. PB Blaster
(like TL said, a penetrating oil) works well and is available for under $5 a
can at Autozone, Wal-Mart, and the like. Also, if you're not using a six
face socket, try it.

 

Better yet, buy a flank-drive line wrench. I'm not sure if anyone
still makes them, maybe Snap-On. I think Craftsman makes a flank
drive (not sure).

nb

 

This bolt was a real bear on my 1989 Accord SE-i. In the end it
involved two people, one holding the filter with a suitable strap
wrench and one hitting it with a ratchet. Prepare to lose a knuckle or
two when it does break lose.

My recommendation is to get a friend who can hold it with a strap
wrench or chain wrench and try again. Remove the filter from the strap
that holds it to the firewall since you might be able to get better
leverage that way.

If you're at it alone, have you considered using an impact wrench? Good
luck.

- Justin

 

ARe you sure PB Blaster can loose the bolt?
What makes you think PB Blaster different from WD-40?
I feel like PB blaster are just another lubricant product.

 

There are no guarantees, but PB Blaster is a /penetrating oil/ with some
lubricant properties. WD-40 is not a penetrating oil. So PB Blaster is far,
far more likely to loosen the bolt than WD-40.

PB Blaster is advertised as "the original nut and bolt buster." I can only
tell you my experience with it, which is so positive that I no longer buy
WD-40 and only use PB Blaster. If PB Blaster doesn't work, then heat or
various mechanical techniques are the next step to try.

Given that a can of PB Blaster is so cheap, and reports here from me and
others on it so positive, I'd give it a try.

Google for {"PB Blaster" WD-40} for more info.

 

I too will vouch for PBlaster. It allowed me to unscrew some exhaust bolts
that I'm sure would have otherwise just snapped off. You just need to remember
to give a little time to work. In the case of the exhaust bolts, I sprayed the
bolt with PBlaster every other day for a week leading up to the day I replaced
the exhaust. I still keep WD-40 around, but not as a penetrating liquid. It
is great at displacing water.

 

Changing the filter is a piece of cake if you have the right tools.
You will need two crows feet flare sockets on two long extensions.
Get the bottom from under the car and top from under the hood.
Skunk oil helps but usually does not soak all of the way in on the
tight ones and everyone I have had are extra tight.
Good luck MT.

 

Of note IMO, as well: Tegger's site, among others, mention the application
of WD-40 to ignition wires to get one's car to start under certain
conditions. Key point being that "WD" stands for "water displacement," like
you say, Alex.

So it's not like I would never buy WD-40 again. I'd just only buy it for
light mechanical/electrical cleaning purposes these days.

For nut bustin', though, PB Blaster baby.