7thStranger

Anyone ever use SORENSEN fuel injectors from autozone?

The reason I am asking is the oem injectors for the S are $134.00

The ones from autozone are 69.00.

Thanks.

joseph mitro

never used them and wouldn't. stick with OEM. do you need a new one or do you need flow matching? i just got mine flowmatched for $48 at www.witchhunter.com. if you have a bad injector, you could consider buying a used one and getting all four flow matched. basically good as new.

7thStranger

I need one right now. leaks bad, and I mean bad.

But 3 of them are original with 190,000 on them, so I really need to replace all 3.

I know autozone parts scare me. I have used all oem parts for this car so far.

joseph mitro

is it a bad seal? if so, you can buy seal kits which include the upper and lower o-rings, as well as caps for about $3 per kit. autozone does carry these kits

7thStranger

I think it is the injector. When I removed the rail. You can ses fuel constantly dripping from the injector.

Am I right in thinking it is the injector and not the seal?

joseph mitro

hmmm, hard to say. would be really easy and cheap to replace the seals, and if that works.....your golden. if not, then replace the entire injector

silverBean

try the seals. i had a problem with an injector leaking into the crankcase. spent a whopping 20 and replaced all the seals and caps. not a hitch since!! word of advice, whenever you remoce the fuel rail its a good idea to redo the seals to precent a tear in the seal. just a safety precaution. If all else fails, go oem. it's better to spend a little more now than a lot more later ya know?

7thStranger

TRAVIS!!!!

I need some seals

I'll give that a try first.

Thanks.

ClassJ

I would only use injectors that come in bosch boxes.

Peckster

It might be a seal or it might be an injector. Take them out and get them cleaned, flow tested and fitted with new seals.

Lots of places sell injectors for less than that, such as Paragon. Buy from our sponsors.

Porsche-O-Phile

I believe the resistance of all "non-Porsche" intended injectors is off. Bosch / O.E. ones use some weird value like 3.2 ohm or something (I'd have to check for the exact value) and most "off the shelf" injectors use 5 ohms, so you're already looking at finagleing some kind of wacky ballast resistor setup into the harness. One more thing to go wrong, and given the potential implications of lean mixtures (due to injectors doing weird things should the resistors fail or the connections go bad or whatever), I'd say stick with stock. In this case, simpler is likely better.

Danno

You can use cheap high-imp. saturated on the early 944 NA cars. The late 944NAs can use the higher-quality low-imp. peak & hold injectors. Only the 951 needs ballast-resistors to work with aftermarket low-imp. peak & hold injectors (don't use sat. injector on 951).

Porsche-O-Phile

Why is that? Do the n/a ones use a "standard" impedence injector as opposed to the 951? I thought they were all "non-standard".

Danno

Yes, the NAs used perfectly normal high-imp. saturated injectors on the early cars and perfectly normal low-imp. peak & hold injectors on the late cars. The 951 used a really wierd non-standard impedance that's in the middle, yet the DME drives them with a peak & hold signal... bizarre...

Porsche-O-Phile

Another one of those enigmatic "what the hell were they thinking" issues I guess. . .

I'm still trying to figure out why they moved the DME to where they did on the 85.5+ cars - right where it could get waterlogged versus it's nice safe easy-to-access location on the early models. Someone asked about that the other day and I had to just shake my head and say "Hans & Frans Engineering again. . ."