It wasn't so much a writeup with detailed how to's but more of a sharing thread I guess. The denso pumps were exact fit plugs and all identical to stock.
Quote:
Originally Posted by Karl
Looks good. I changed my fuel pumps last year and installed new o2 sensors.
The original o2's looked really bad.
I use Bosch for the o2. I forget who makes the fuel pumps.
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The o2s did look quite sooty. After I can get out for some wot drives Im going to pull them both and just take a peek maybe at the end of the season. Just curious how sooty they get after a short time period. Im going to guess they were originals.
Quote:
Originally Posted by mike100
I just did my pumps last Friday. I like the way you secured the sock on the rear most pump. I elected to just let them point out and fold as needed when you drop them into the fuel tray. One of them was just contacting the tray as it seated, but I put a mini probe light down the filler tube and it all looked ok. Anyhow it maintained 52 psi to redline and felt a tad better pulling in 2nd and 3rd gear. I think it will be less prone to pining when it gets hot out. I did the $19 rock auto pumps. There was no modification needed, but I put a couple of stainless hose clamps on the pump outlet connections and left the rest of the oem tubes and clamps alone. For the o-rings; I got a 10 pack of 3/16 or whatever size at home depot for $2 (you need 9).
The garage smelled like gas for about a day after, but after I cleaned all the rags I think it sealed up great as I also had to carefully/reluctantly reuse the fill tube gasket.
I kind of lost track, but I think the pump with the hand written part number inscription is the primary. I think mainly my secondary pump was getting weak. Can you verify which pump was which?
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Thanks ! I noticed the oem sock was smaller on that pump so I worried about bending the sock a little but I don't think it made much of a difference. It may have moved out of place but the zips were more to keep them in shape so when installed it would be where it needs to be and could fold in shape if it came loose from the zips. the oem sock had a hole at the end and goes over the pin. I opted not to put a hole in the end of the strainer.
I definitely noticed a bit of midrange oomph. maybe my mind playing tricks but Ill know soon enough when I can get out more.
Ill double check my photos I didn't look any closer to see if the pumps were identical or not. If they are im not sure which may be which.
Is there a way I can test these to see if they are in good shape?
Quote:
Originally Posted by aafc
When i replaced my fuel pumps i found the gasket and the rubber around
the filler neck at rock auto. The gasket is ACDELCO # G1 @ $30.79. The
rubber around the filler neck was listed as fuel tank filler boot for#15.67.
that part was made by Fairchild # G4012 .
Both parts arrived within 3 days after placing order. the rubber washers
on the bolts i found at ACE hardware.
John
1990 white/black #2546
one of a few auto(4l80E) eq. ZR-1's
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Thanks ! I will look into the gasket there
