Fuel filter change (NB8B)?

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wun911
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Fuel filter change (NB8B)?

Postby wun911 » Sun Mar 09, 2008 11:25 pm

Im reading about fuel filter change for my NB8B.

Aparently I need a 'special' tool (its the same one used on ford fule lines) to remove the hose line off the fule filter??

What is this special tool? What does it look like?

Where do I get it from?
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fattima
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Postby fattima » Mon Mar 10, 2008 7:53 am

Wun,
I don't think you need a special tool. Should be able to pull/twist the rubber line off the filter.
http://www.techguys.ca/howto/fuel_filter.html

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Garry
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Postby Garry » Mon Mar 10, 2008 10:00 am

The only special tool I used was a fine screw driver.

fattima,

The NB's use a plastic clip system on the fuel lines. Not a hose and clamp like the NA's use.
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Postby silvermiata » Mon Mar 10, 2008 10:56 am

wun,

Make sure you de-pressurize the fuel lines by taking out the fuse for the pump and cranking the car :) And also do it when the car is cold...

dont ask me how i know it, i was shi__ing myself after getting drenched with premium unleaded under a hot exhaust.... :shock: thank GOD it didnt catch on fire :lol:

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Re:

Postby KAM » Mon Mar 10, 2008 11:48 am

silvermiata wrote:wun,

Make sure you de-pressurize the fuel lines by taking out the fuse for the pump and cranking the car :) And also do it when the car is cold...

dont ask me how i know it, i was shi__ing myself after getting drenched with premium unleaded under a hot exhaust.... :shock: thank GOD it didnt catch on fire :lol:


I removed the fuse to de-pressurize the fuel lines but it still leaked fuel (slowly) when I removed the filter. So keep a container under the filter to catch the fuel and remove the mounting bolts before disconnecting the fuel lines to minimise the amount of time the fuel can leak out.

As Garry said the NB8B has plastic clips, the manual states they should be replaced. I bought and used new ones but could have used the originals as they were not damaged. No special tool required small screw driver or long nose pliers are all you need.
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silvermiata
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Postby silvermiata » Mon Mar 10, 2008 12:12 pm

Kam, in my case fuel was not leaking,.. it was squirting like crazy onto a hot exhaust pipe and i could see the evaporation of the fuel on the pipe :shock:

wun911
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Postby wun911 » Mon Mar 10, 2008 12:34 pm

Oh cools thanks pplz

Will do it when the car is cool and a nice sunny day...
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Postby franjae » Tue Mar 11, 2008 10:05 pm

Bast*ard of a job! Didn't know how to depressurize the fuel line, ended up completely soaked when the fuel ran down my arm to my chest. Had to rip off the t-shirt and hosed down in the front yard.......not a good sight :roll:

Would be an easy job with the car up on a hoist. Not doing that again in a hurry!
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SuperMazdaKart
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Postby SuperMazdaKart » Wed Mar 12, 2008 11:56 pm

Letting my mechanic do the filter on mine tommorrow, fortunately for him I've printed the instructions from the Mazda servicing manual & also printed a photo of under the car of where the filter is & also of the relay plug under the dash. Though not too late to dispose of the instructions first :lol:
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Postby wun911 » Thu Mar 13, 2008 11:24 am

I still havent gottin around to it LOL probably this weekend...

I presume you depressurize by starting up the car then un plug the yellow cable.

Then to get pressure you just start the engin again? Can I gain pressure by turning the key 1/3rd to the acc?
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Wuey
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Postby Wuey » Fri Mar 14, 2008 8:34 pm

I depressurized by leaving the fuel cap open, and clamped the hoses with small vicegrips. I also had a fire extinguisher within reach when I was down there. You never know what static electricity can do with volatile stuff. The hoses were very tight fitting. I managed to skin my knuckles the first time I slipped a hose from the filter. Petrol + open wound - Ouch! I was much wiser during the second change.
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Postby Fatty » Fri Mar 14, 2008 9:34 pm

hi wuey!

long time no see.

changing the clutch in my na6 tomorrow... can you give me a pointer to your instructions online??!?!?!

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Postby Wuey » Fri Mar 14, 2008 10:52 pm

Hey fatty, do you need a hand changing your clutch? Will be glad to help if you need another pair of hands.

If you have access to a hoist, that will be perfect. Otherwise jack up your car as high as possible to have maximum working room. If you're changing the oil seals, take your time to pry them off as they can be a real pain without the proper tool. Just remember not to drive the rear main seal too far in. Place a small block of wood diagonally across the seal as you drive it in with a mallet.
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