Sorry for the novice question, but I am new to this stuff and trying to learn being a DIYer.

Anyway, is there any tricks or things I should be aware of before I R&R of the fuel filter similar to this one attached here in this link? Seems pretty simple, but wanted to check with the experts first.

http://www.ecklers.com/product.asp?p...dept%5Fid=1272

Secondly...I also ordered a different fuel filter thinking that the this filter went inside the metal canister shown above but now realize this is for some type of filteration directly in the carb? What do I do with this filter if anything as pictured in the link below?

http://www.ecklers.com/product.asp?p...dept%5Fid=1272

 

The filter in the second link is the internal filter for a Quadrajet carb. I am not familiar with the one in the first link. Many 68-69 models came with Holley carbs from the factory. Perhaps that was the filter for the Holley 4 barrels?

 

If you have the Quadrajet on your car the second link is the correct filter. Be sure and use a "Line Wrench" on the line fitting and on the filter fitting on the carb to keep from rounding them off. A Line Wrench looks like a box end wrench with a slot cut in the end to slip it over a line, it allows a better grip on the nut.

 

My '69 with a 350/300hp motor has the in-line fuel filter can thingy, not the small one in the carb.

 

Thanks for the info...but things are getting kind of more confusing for me. Here is what I have got on my car. It is a 1969 L46 with a Quadrajet Carb and I have the inline metal fuel canister thingy as well. Here is a pic (not my car) of the canister I am talking about that looks exactly like mine including the piping bends. Btw...I bought the car last Sept 05 and still have much to learn so thanks for the help. Car runs fine...just going over some more little details.



Thanks for the tip on using a box end wrench. Do you happen to know what size I need assuming a stock fuel fitting line nut?

Also for the Quadrajet, do I just unbolt the single large nut with the box wrench on the front of the carb and then somehow the fuel filter slides out of the hole and replace it with the new filter I bought (2nd one in the link).

Can or should I use two inline filters as it appears the car is currently setup? I just had a new fuel tank installed so no more old gunk there to get into the fuel lines so I am thinking that two filters might be an overkill.

Or should I remove the one inside the Quadrajet and just use the metal canister one since for me it would be more difficult to run new fuel lines to bypass the metal canister?

Thanks...

 

You will need a 1" wrench to remove the larger fitting that holds the filter in the carb. Hold the large fitting with the open end of the 1" wrench and use your line wrench (9/16" or 5/8"?) to remove the fuel line fitting. Once the fuel line is out of the way, take your 1" box end of the wrench and remove the fitting from the carb... the small filter is inside it. Watch how it comes out so you can reinstall it the same way.

Do be careful when removing the 1" fitting from the carb, you can bend/warp the carb if too much pressure is used to break it loose or re-tighten it.

Good luck... GUSTO

 

I use both

68 used then on boththe 327 and the 427 if they had the q jet

I use the Ac delco in line and leave one in the q jet for good measure.

pretty easy, use line wrenches on the fuel line, and a crescent wrench on the filter to hold it steady. when putting it back together, get the threads started , position the filter so the return lines up, and tighten using the line wrenches

for the q jet
hold the big nut on the car with a 1 ' wrench loosen the fuel lines, then loosed the big nut on the carb, and the Little filter will pop out along with a spring if on is actually there.
if the spring is not there, do not use the small filter till u get one


bingo

oh
is that what you have on now

 

Thanks for the detailed R&R info. I will stop by the store getting the tools I need and then do this by Saturday with fingers crossed.

yeah...I guess I got 2 filters running on my system which probably was a good idea give that the old gas tank had lots of gunk floating around at the bottom and now it is replaced with a new tank.

 

no sweat,
Nice looking engine bay, got any more pics?

do yourself a favor and get a full set of line wrenches, not just the size you need, these are great/ needed for brake jobs, and a multiude of other uses....

this is a piece of cake job, even for a beginner

 

I think you have it pretty much covered.... except maybe wrapping a towel around underneath the fuel fitler to catch all the gas that pours out when you unscrew it! The GF432 fuel filter (with fuel return line outlet) was used on 68 and 69 corvettes that had Qjet carbs (and fuel return lines). Later models had the fuel return line come off the fuel pump. I believe the GF432 is also used on 68 and 69 Camaros.

 

Precisely! Learn something new everyday on this board!

 

Thanks for the very helpful tips guys and letting me know what wrenches to go ahead and buy (bought a full set of box end wrenches). I got the one on the Quadrajet changed last night and it was a piece of cake thanks to your tips, etc. I am waiting for the other larger filter to arrive today and will switch out that one as well tonight. Old filter was not dirty (gunk) but was discolored to a orangish color. I have no idea when the last time the filter was changed.

 

okay...I am 50% of the way there on my fuel filter swap. I am having problems with the larger canister filter GF432. The one ordered from Ecklers has a slightly different design than the one currently on my car. There are 2 differences.

1. The Ecklers replacement has the fuel line neck on the top part with the fuel return line has a slight factory bend while the bottom input line fitting is totally straight. Mine on my car is currently the exact opposite where my top side fuel line neck is perfectly straight but the bottom is slightly facotry bent. Nothing major but the exact same degree of bends just on opposite ends.

2. This is the problem. The bottom fitting on the new Ecklers filter. It is slightly different than my current filter causing the fitting to not seal completely and therefore leaking fuel. My old filter has more of a wider & flatter looking seal around the inlet threads while the Ecklers is more narrow and raised looking seal around the threads. The Ecklers unit is just designed ever so slightly different to cause a leak in the fuel line with the seal around the threads being a tad narrower causing it not to seal correctly. The top is exactly the same as my old unit and seals up perfectly and the looked to be designed exactly alike so no problems on the top fitting, just the bottom.

Has anybody else expereienced this problem and do you know of a another source of fuel filters that might have the filter that I need with the slightly different design? I would hate to go ordering a bunch of filters from all these companies only to find out they are all the same. I checked with my local parts stores and everybody has to order them. I checked the bottom fuel line fitting and it is in good shap and appears to have no defects.

 

IVE NEVER HAD THIS PROBLEM, MAY BE A BAD FILTER, i USUALLY GET MINE AT NAPA, OR AUTOZONE, THEY USUALLY KEEP EXACTLY ONE IN STOCK, YOU'D BE SURPRISED.


sorry caps lock was on

i would just go get another filter, call around to your local parts stores, but you need to tell them its the filter for a 427 thats what the lug nuts behind the counter need for thier computers


not sure what you meant about the return line though, maybe i mis read it, but is sounds like the filter on there was bent after the fact. All the GF 432 filter have a straight tube coming out for the fuel return

cheers tim

 

I found an AC Delco parts store and they had the filter. I will install it tonight. I would have thought that putting an AC Delco name on the filter would require some things to be the same, but I guess not. I can tell already from just looks alone compared to the Ecklers that the canister itself is larger and also the fuel line inlet and outlet holes are larger also compared to the Ecklers unit. Hopefully that will be the trick to getting my fuel lines to seal properly having the larger inlet/outlet fuel holes from the filter.

 

Well I finally got the new filter installed using the one I bought today. I must have the most pain in the butt fuel lines in that the canister must be aligned just right to make sure the lines seal properly. There is definitely a reason why the canister has the end fittings bent so they align with the fuel lines. It took several tries of backing off the line fitting half a turn and then retightening holding the canister at a slightly different angle and then finally I got it to stop leaking. I let the car idle for at least 15 min and it was bone dry. Thanks for the help.

 

Well I finally got the new filter installed using the one I bought today. I must have the most pain in the butt fuel lines in that the canister must be aligned just right to make sure the lines seal properly. There is definitely a reason why the canister has the end fittings bent so they align with the fuel lines. It took several tries of backing off the line fitting half a turn and then retightening holding the canister at a slightly different angle and then finally I got it to stop leaking. I let the car idle for at least 15 min and it was bone dry. Thanks for the help.