10 minute fuel filter change the easy way

PorterzSupra

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Oct 25, 2005
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just so everyone knows, the FF is almost impossible to change so I cut the line on the drivers side the one all the way over, right before the rear tire and ran a new line over and down so now my fuel filter sits on the top of the differential I just left the old one up there, I dunnno who would design a location like that one, prolly someone who wasent gonna worry about changing it. Anyway its an easy mod, takes about 10 minutes and a piece of metal line and rubber line and your all set and you can get a nice clear filter so u can inspect it now and then so u know when u have to change it. saves a lot of aggravation damn engineers....
 

MDCmotorsports

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Its also a great way to burn down your car when you hit the first bump or get rear ended.

Nice 11th post.

Not the way to do it. You should have changed out the old filter. If it wouldn't budge, you should have dropped the tank or found another method of doing it.
 

Satan

Supramania Contributor
Mar 31, 2005
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Supposedly, the design was just for that... to make it hard to change. The fuel filter is not a serviceable itema nd should last the life of the vehicle... not my words. Lots of different opinions on this...

I just changed mine recently and would do the same on any 15+ year old car. It is a PITA, but I'd recommend putting it back the way it was designed.
 

SupraMario

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Mar 30, 2005
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MDCmotorsports said:
Its also a great way to burn down your car when you hit the first bump or get rear ended.

Nice 11th post.

Not the way to do it. You should have changed out the old filter. If it wouldn't budge, you should have dropped the tank or found another method of doing it.

im going to have to agree with MDC and the other 2 on this one, they put it there not to make it a pain in the ass but for safety reasons, think of how much pressure is going through that canister, and all it takes is a nice hit, and fuel is going to come out like a damn hose pipe. you might want to go back and do it the right way.
 

lagged

1991 1JZ
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PorterzSupra said:
just so everyone knows, the FF is almost impossible to change so I cut the line on the drivers side the one all the way over, right before the rear tire and ran a new line over and down so now my fuel filter sits on the top of the differential I just left the old one up there, I dunnno who would design a location like that one, prolly someone who wasent gonna worry about changing it. Anyway its an easy mod, takes about 10 minutes and a piece of metal line and rubber line and your all set and you can get a nice clear filter so u can inspect it now and then so u know when u have to change it. saves a lot of aggravation damn engineers....

the FF isnt really that hard to change at all. it probably would take me 10 minutes to do it the RIGHT way, and not put my self and others at risk by doing what your dumbass did.
 

shaeff

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IJ. said:
This is the part I find disturbing as most of the clear plastic filters aren't rated for EFI Pressures.....

that's the first thing i thought! :( i smell fuel spillage in your future, sir.

and here's the best way to change the fuel filter, that i've found:

1) plan ahead! (like a week ahead)

2) go to the autoparts store and buy PB Blast (best stuff for rusty nuts;))

3) EVERY DAY spray the crap out of the two fittings on the fuel filter, and
the mounting bolts for the bracket.

4) roughly a week later, and 7 dousings of PB Blast, grab some FLARE wrenches, and reach up there, and break the bolts loose. have a rag on hand to absorb any dripping/spilling gasoline.

5) now break loose the mounting bolts, and take off the lines, and filter.

6) clean threads on lines, replace filter.

i did my filter change (probably an OEM filter from 1986.5) in like 20-30 minutes, the FIRST time, and most of that was getting ready, jacking the car up, finding my tools... the second time i did it (for good measure when working on the fuel system) it took me 10 minutes, WITH THE GAS TANK IN.

i'd invest some money into your fuel system, ASAP. that plastic filter is most likely going to bust, unless it's rated for 60+psi, in which case, i STILL wouldnt trust it.

-shaeff
 

Suprastic

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Yep, definitley don't screw around with the fuel system, especially on our cars. But then again its only you life and your cars life. Try killing two birds with one stone and do it properly. This way you won't kill yourself and your car.

shaeff said:
: go to the autoparts store and buy PB Blast (best stuff for rusty nuts;)
 
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staticpat

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shaeff said:
6) clean threads on lines, replace filter.


-shaeff

Very important! I spent a whole day draining/removing gas tank to change out my pump and filter. I tightened the balls out of the flare fittings so I wouldn't have to go back under there. Now its pissing gasoline, and I have to go back and reclean/teflon tape the threads or possibly reflare the lines. In short, clean your threads!
 

mkiiSupraMan18

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not to mention the tape could wind up in an injector........

This is exactly the shit I hated about CS.com...... just tell him it's not the best idea, dont bust his ass about it...... 11th post or not.

Toyota only wants $75 to change that filter for you, btw.
 

Ckanderson

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mkiiSupraMan18 said:
This is exactly the shit I hated about CS.com...... just tell him it's not the best idea, dont bust his ass about it...... 11th post or not.


Um WHAT?
 
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mkiiSupraMan18

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Hell, I don't even remember....... I think I was in a bad mood when I posted that...... ? :nono: why the hell did I post that..........

I DID get on CS.com......... (celicasupra.com).... maybe that set me off

They just always say stuff like...

"Oh... thats not what Reg Reimer (wtfe his name was/is) did when he swapped his 5m to a 7mgte....." stupid stuff like that and it just pisses me off. I guess I need a vacation... :icon_conf Anyway.......... back to the topic at hand.

Agreed though, fuel filters arent THAT hard to get off..... would much rather use some fuel line and some compression fittings instead of a rubber hose though..... that doesn't even sound like a bad idea....... cut the line on both sides..... take the filter "out of the car"..... put the fittings on the new filter..... cut a little more hose off..... put the comp fittings on.... and be done. This would be an alternative to the listed method.
 

Satan

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I had to use teflon when I changed mine on my 87T (now deceased after a 1JZ swap gone wrong ;-).

But it never leaked after that...
 

PorterzSupra

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Okay I think everyone here has blown the whole thing waaaaaay outta proportion in reality it works good for me and it saved alot of time both now and in the future, if you dont wanna do it thats fine I think its funny just because its a gas line everyones like OMG its gonna explode if its modified you guys have been watching F&F to much " NOOOOSSS " hahah
 

supraman7mgte

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PorterzSupra said:
Okay I think everyone here has blown the whole thing waaaaaay outta proportion in reality it works good for me and it saved alot of time both now and in the future, if you dont wanna do it thats fine I think its funny just because its a gas line everyones like OMG its gonna explode if its modified you guys have been watching F&F to much " NOOOOSSS " hahah
Did you consider that the fuel line you altered is under pressure?Maybe when the the line bursts and spills the fuel on the hot exhaust and turns your toy into a flaming human meat oven you might re-consider. It's not like that any of the responses so far don't know what the hell they are talking about.If your "idea" was such a easy fix,it would have been done along time ago and posted on SF.I hate to think if maybe your using rope as a seat belt,and clear plastic sheeting as windows because it "saved alot of time".As much as it is a pain in the ass to do,just do it right!
 

shaeff

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PorterzSupra said:
Okay I think everyone here has blown the whole thing waaaaaay outta proportion in reality it works good for me and it saved alot of time both now and in the future, if you dont wanna do it thats fine I think its funny just because its a gas line everyones like OMG its gonna explode if its modified you guys have been watching F&F to much " NOOOOSSS " hahah

heh, no, not quite.

actually, our fuel systems use a vacuum based fuel pressure regulator. even if you're still on the stock FPR, and you increase boost think of it like this:

stock base fuel pressure is 40psi with the vacuum line off. when you put the vacuum line back on, it drops about 10psi. (so now your idle fuel presure is at about 30psi) now, when you rev the motor, even at idle, NOT boosting, your fuel pressure will rise in accordance to how much vacuum is lost. (read: when vacuum gets closer to 0 pressure, and boost, fuel pressure is RAISED)

SO, when you go into boost, (remembering that we have a vacuum based fuel pressure UP vsv, and FPR) your fuel pressure will RISE in accordance to how much boost you're running.

Now, when you're boosting 10psi (for example) your fuel pressure will most likely be in the vicinity of 55-60psi or so. now take into consideration that the entire fuel system, from the fuel pressure regluator on the return side of the rail, ALL THE WAY TO THE PUMP IN THE TANK is under that 55psi of fuel pressure.

and finally, think of how comfortable you feel about a small piece of clear plastic holding 55psi (or higher if you're boosting more) of fuel pressure, and that if it explodes/pops that raw fuel will spew out onto your hot exhaust and most likely ignite. (remembering that the filter is betweent the fuel pressure regulator and the pump, so it's under constant pressure)

and keep thinking that as long as your ignition is on, your fuel pump is still running, so that fuel is just being pumped straight out onto a hot exhaust.

honestly, i'm not saying this to be an idiot, i'm not trying to discourage you from innovative ideas. i'm trying to help protect and prolong your life, others on the road, and your car.

and for the record, most of us are not F&F watchers;) infact, i hate what F&F has done to supras...

-shaeff
 

lagged

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very well said shaeff. i considered a reasonable response to try to explain why what he did was wrong, then i just sighed and realized its probably a waste of time.