Fuel Pump questions (3 Viewers)

[NeverFinis]

The whine is, but that clicking sounds doesn't exist.

I see. Must be some sort of audio bug with the video capture or playback.

 

[OGBeno]

Confirmed my injectors are p/n 23250-74080, which appears to be a stock 1FZ injector, but the p/n on Amayama is 23209-74080. Are they the same injector, but what I have are aftermarket Densos?

I also found a lot of discussion about Supra fuel pumps, along with a lot of debate about its necessity, even for a supercharger. Something tells me this is what I'll find in my tank, because I saw several people talking about it being noisy.

23250: Part Name Category (PNC) Always a 5 digit number. Not a ten digit number. There is no such thing as 23250-74080.

23209-74080 is the correct injector part number for the 1FZ-FE prior to 01/1998.

 

[COS80]

23250: Part Name Category (PNC) Always a 5 digit number. Not a ten digit number. There is no such thing as 23250-74080.

23209-74080 is the correct injector part number for the 1FZ-FE prior to 01/1998.

Ok, but that's the number on the injector. I'll upload a picture I took yesterday whenever the site allows picture uploads again.

So does that mean they are Densos and not Toyotas?

 

[OGBeno]

Ok, but that's the number on the injector. I'll upload a picture I took yesterday whenever the site allows picture uploads again.

So does that mean they are Densos and not Toyotas?

Denso is the OEM supplier of injectors for a Toyota FZJ80. So, if they are in a Toyota package. They are Toyota parts.

If they are in a Denso box from someplace other than an authorized Toyota parts department/seller, then they are Denso aftermarket.

 

[baldilocks]

Still going on …..

 

[COS80]

Still going on …..

?

 

[baldilocks]

?

Has your question not been answered?

 

[COS80]

Here's the pic (finally). It appears it's actually a Chinese knockoff.

 

[Fj80oregon]

I got a fresh set of cleaned and flow tested OEM injectors if you feel the need to replace those!

 

[OGBeno]

Here's the pic (finally). It appears it's actually a Chinese knockoff.

View attachment 3861613

23250 is the injector which that picture delineates.

23209 is the kit that comes with the injector, grommet and o-ring.

There is no way you can know that injector is Chinese without removing it and inspecting other things.

And in all honesty, you are wasting tons of valuable time that you could have spent driving your truck.

 

[COS80]

Bonus: as I was out driving my truck, I realized that my exhaust now smells normal. It would appear that the new charcoal canister also resolved that stink.

 

[COS80]

I managed to get the factory original pump back from the previous owner of my truck, for the cost of shipping. With a "free" stock pump, I figured reinstalling it is a test, if nothing else, so I did that last night.

The pump I removed is a Walbro GSS342. While noisy, it did seem to make a difference: with that pump, both STFT and LTFT were +/-5, and zero at WOT uphill; with the stocker, the LTFT is now -4 to +11, and non-zero at WOT uphill. Although a wider range, I don't think this indicates any problem, so unless I hear ping, I believe I'll just leave this pump in place. It ought to last me another decade. It's so quiet, I couldn't even hear it with my ear pressed to the floor over the hatch. It's eerily quiet to drive, now.

The evap canister solved the tank pressure and the stink I thought was running rich or gutted cat, so it doesn't matter what injectors are in there.

As an aside, this is the smallest fuel pump I've ever seen, and it was so easy, compared to my F-150, which required removing the entire fuel tank to get at the pump, and took me two days instead of an evening after dinner.

 

[jeffro109]

I just bought a denso pump as the truck has 335,000 on it

Denso 951-0001View attachment 3861356

Is this a direct fit (does not seem like it)?

 

[landtank]

The dense pump has larger wire connections and requires you to splice them to the factory wires