Fuel filter changed=WHOA
So, I've been trying to remedy my MPG woes going down the checklist. MAF...TB..EGR...air filter...light foot. Down to the last couple things, fuel filter and 02 sensors. Figured I'd do the 300zx fuel filter as it was the cheaper of the two. Buddy, nelledge on this board, guided me through the installation on the fuel filter; after about a hour of cursing and scraped hands...wallah, installed.
The old filter was horribly dirty, leaking out orangish brown fuel out of both ends. Curious to see what it looks on the inside. I get my car on the highway back home, NIGHT AND DAY DIFFERENCE IN ACCELERATION. Smoother upshifts, downshifts, pulls harder downlow and uptop. Long overdue but glad I did it. cliff notes: replace your fuel filter every 10-15,000 miles. seriously. |
Is there a DIY walk through on replacing it?
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Originally Posted by Jaeden09
(Post 8035249)
Is there a DIY walk through on replacing it?
yea pull the fuse for the pump crank her over to get rid of the pressure then go to town! lol |
It's an Inline on the firewall .. No dificulty at all, besides tightening the bottom hose clamps!!
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The job is simple enough but the biggest problem is the position of the damn thing. Also, old rubber hose likes to get stuck on whatever nipple it's been attached to for the past ten years, so you may have to cut the portion of the hose off that is already over the nipples on the old fuel filter.
That's right, cut them hoes off. |
Curious to see the inside....as in are you gonna cut it open and see? If so, post up a pic bruh.
Voila not wallah ;)...giving you a hard time mang... |
protip: remove the intake when doing this. Makes life SO MUCH easier to access the bracket screws for the filter.
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Originally Posted by VQ'rInWLA
(Post 8035394)
Curious to see the inside....as in are you gonna cut it open and see? If so, post up a pic bruh.
Voila not wallah ;)...giving you a hard time mang... |
A hacksaw should do you justice although you MAY have to put a bit of muscle into it.
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Wow I am in the same boat. My MPG has been slowly going down but I've done everything I can think of to raise it. And I've been feelin a serious lack of power during the normally "back in your seat" experience of WOT, for everything else my car feels torquey and pulls really nicely. I guess I'm long due for a new fuel filter!
BUt what I am confused about is if the fuel filter was indeed clogged or dirty wouldn't you get better MPG because less fuel was flowing? |
wow!!! amazing!!! if you do regular maintenence to your car it actually runs better??? no $hit!!! :rolleyes:
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While trying to purchase my fuel filter, the dealer suggested that I not replace it due to the fact that they are designed to last the lifetime of the vehicle...pft...what a load of crap. After replacing it and taking a look inside it was absolutely disgusting in there.
- Remove fuse - Turn the car over wait for the car to shut off to release the pressure. - Remove your back seat - Unscrew the 3 bolts if i remember correctly - release the harness - Open out the filter - replace fuel filter (OEM is best in this case) - put everything back together I personally notice a very slight difference when starting the car after replacing the filter but a decent gain in MPG |
Originally Posted by VisciousMo
(Post 8035191)
cliff notes: replace your fuel filter every 10-15,000 miles. seriously. |
Originally Posted by The Wizard
(Post 8035606)
I understand your excitement, but don't you think 10-15k is a little overzealous? :)
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Originally Posted by max ride 41
(Post 8035614)
its every 60,000 miles, not 10 to 15,000
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Originally Posted by max ride 41
(Post 8035496)
wow!!! amazing!!! if you do regular maintenence to your car it actually runs better??? no $hit!!! :rolleyes:
I caught your sarcasm Nissan mechanical engineer . Let me add that I bought the car in December. Asked the owner what maintenance he did recently. Fuel filter was one of them, didn't think much of it. But, I said what the heck. Let's see if it's bad or not. What do you know, it was horrible.
Originally Posted by The Wizard
(Post 8035606)
I understand your excitement, but don't you think 10-15k is a little overzealous? :)
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Originally Posted by Leo_Koneval
(Post 8035467)
Wow I am in the same boat. My MPG has been slowly going down but I've done everything I can think of to raise it. And I've been feelin a serious lack of power during the normally "back in your seat" experience of WOT, for everything else my car feels torquey and pulls really nicely. I guess I'm long due for a new fuel filter!
BUt what I am confused about is if the fuel filter was indeed clogged or dirty wouldn't you get better MPG because less fuel was flowing? I'm not sure how to tackle your last question, but from my understanding from the threads I've read. The filter cleans the fuel before it hits your injectors. If it's excessively dirty, these dirt particles can stuff up the openings on your fuel injectors and will cause an array of problems. correct me if i'm wrong, anyone. |
Originally Posted by ajm8127
(Post 8035371)
The job is simple enough but the biggest problem is the position of the damn thing. Also, old rubber hose likes to get stuck on whatever nipple it's been attached to for the past ten years, so you may have to cut the portion of the hose off that is already over the nipples on the old fuel filter.
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Originally Posted by AutoGaugeMax
(Post 8035528)
While trying to purchase my fuel filter, the dealer suggested that I not replace it due to the fact that they are designed to last the lifetime of the vehicle...pft...what a load of crap.
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Originally Posted by VisciousMo
(Post 8035191)
The old filter was horribly dirty, leaking out orangish brown fuel out of both ends. Curious to see what it looks on the inside.
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Originally Posted by ef9
(Post 8035635)
Your injectors are probably clogged too. Maybe you can get a new set?
or or just run some of that Lucas Crap in your fuel (No idea if it works) and Seafoam that bish. |
Originally Posted by FallenOne
(Post 8035643)
or just get them reflowed.
or or just run some of that Lucas Crap in your fuel (No idea if it works) and Seafoam that bish. |
Originally Posted by The Wizard
(Post 8035615)
I'm well aware what the owner's manual calls for....:obut thanks!
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Originally Posted by ajm8127
(Post 8035371)
That's right, cut them hoes off. Heres a thought i been having everyone.. With the way gas prices been increasing, and Soooooo many members complaining about decreased mpg numbers...any thoughts that refineries are no longer using the same quality additives for gas. My numbers arent bad, but i noticed maybe about 3 or 4 tank fillups ago( or 60 cents ago per gallon :rolleyes:), that my numbers have fallen off slightly. And i keep up on my maintenance. Somethin has to be going on, i mean There has to be some sort of connection there |
TIP: - The fuel filter hoses come off easy if they're warm.
Change the fuel filter about an hour after the engine has been run hot. The hour is plenty of time for everything to cool down, but warm enough to keep the hoses a bit softer. |
I really need to get around to installing my Z32 filter already lol It's been sitting here forever along with a new PCV valve.
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So... Did YOU do it? lol
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Originally Posted by aackshun
(Post 8036826)
So... Did YOU do it? lol
other than removing the hoses from the fuel filter, nate did that. I was scared of puncturing them with the pliers I was using |
Did mine today. Hopefully i will see some improvements. It seemed easier to do the top clamp first and get the bottom clam though the wheel well.
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also to loosen the bond between hose and nipple you can take a eyeglasses repair flat head screwdriver and just nudge it in between the hose and nipple and then just go round the world with the tip of the screw driver in and that will break the bond, i have seen pliers shred a old hose..then you HAVE to cut it..
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I was forced to cut mine. had no choice. now I keep having issues with the line popping off that goes from the filter to the engine. and I get the hose on there about 3/4 the way on there. and tighten the crap out of it. although it's been holding on good lately.. *knocks on wood*
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Hey VisciousMO, got a part # for the 300zx fuel filter?
This question is for everyone.....I assume the TT 300zx shares the same filter as the NA 300zx? |
Originally Posted by The Wizard
(Post 8038573)
Hey VisciousMO, got a part # for the 300zx fuel filter?
This question is for everyone.....I assume the TT 300zx shares the same filter as the NA 300zx? I didn't buy OEM, I bought it from advance auto parts for $9. Fits wonderfully. Part No. F54794 from advance. http://www.advanceautoparts.com/1/1/...rt-f54794.html |
Originally Posted by The Wizard
(Post 8038573)
Hey VisciousMO, got a part # for the 300zx fuel filter?
This question is for everyone.....I assume the TT 300zx shares the same filter as the NA 300zx? From courtesy 16400-Z32001 http://www.courtesyparts.com/16400-s...6-p-31301.html and im thinking its for both n\a and TT |
Thanks VisciousMO and P.O.K.
I'll go with OEM. |
Originally Posted by ChrisMan287
(Post 8035907)
I really need to get around to installing my Z32 filter already lol It's been sitting here forever along with a new PCV valve.
Get on it son.
Originally Posted by The Wizard
(Post 8039050)
Thanks VisciousMO and P.O.K.
I'll go with OEM. |
just changed mine, i did notice brown goop on the filter media but not like i thought i would see. i have no idea if it was ever changed, i can say butt dyno feels a bit smoother/better but i have been doing a lot of spring maintenance lately so its likely a blend of everything.
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As a side note, I extended the fuel hoses the first time I did this and made them about 1.5 feet longer. Much easier to replace it now. About 5 minutes at the most.
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Originally Posted by VisciousMo
(Post 8035435)
yeah, not sure what to use to cut it up. I don't have a saw of any sort.
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after reading this thread, i was thinking that i should do this as well but i'm confused because i'm getting 2 different directions autoGaugemax says one way and the how to guide is completely different. this is the link to the how to http://vbxmaxima.8m.com/fuelfilter.html what is the correct way?
Originally Posted by AutoGaugeMax
(Post 8035528)
While trying to purchase my fuel filter, the dealer suggested that I not replace it due to the fact that they are designed to last the lifetime of the vehicle...pft...what a load of crap. After replacing it and taking a look inside it was absolutely disgusting in there.
- Remove fuse - Turn the car over wait for the car to shut off to release the pressure. - Remove your back seat - Unscrew the 3 bolts if i remember correctly - release the harness - Open out the filter - replace fuel filter (OEM is best in this case) - put everything back together I personally notice a very slight difference when starting the car after replacing the filter but a decent gain in MPG |
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