I have a '90 L98 and want to replace my injectors. My local shop is quoting me about $1000.00. Does this sound like a reasonable price?

 

for this price he is taking the whole intake off.
This is how it is stated on the books.
You can get by easier if you remove just the runners.
I have a set of stock injectors that are not used all that much
that will fit. I would reccommend a new set of o-rings if you
do purchase these.

 

Dude do it your self. It can be done for as little as $250 if you use FMS injectors. If you get yours redone and matched or by OE injectors, it will change the price slightly. It will only take about 1-2 hours and you can get plenty of help from the forum. Also check your EGR while you are at it. Forum again.

 

For that price it sounds like they are charging for the very pricy new stock injectors and lots of shop time at maybe $80-$90/hr.

Indeed this would be a great time to send your stock injectors to Rich at Cruzin Performance (link on my site). If you don't want the ~1wk of down time, pick up a set of used injectors (should be around $100 or so) and have them reconditioned by Rich.

I agree that it your shop pulls the intake base it will cost extra shop labor. All that is needed it to pull the plenum, runners and fuel rail. Then the old injectors can be pulled from the fuel rail, new/rebuilt ones installed and the parts reassembled.

You might ask your shop to explain the parts & labor break down; then you can better see what is the best path.

Of course this is a classic example of where the GM Shop Manual for your car as well as a nice tool set can really pay off big time in savings.

However, working in this area for the first time you will need to take it slow and easy and be careful with plastic parts and with starting & tightening bolts. Also it is a very good idea to put bolts into marked Zip-Lock bags as you go and maybe even take some digi pics at various stages. These will greatly ease your mind while keeping you on track with a fun R&R project.

 

Don't even have to take off the runners. I removed the plenum and seperated one side of the fuel rail from the crossover tubes when I did mine.

 

It's very labor intensive, but that still sounds excessive.

I'd do it for a 30 pack of bud if you lived nearby.

 

why do you want to replace them, are they leaking or you want performance ones?

 

One injector seems to be sticking or clogging or something of that nature intermittently. I figured no sense in replacing just one. I just want regular old stock injectors and my regular old smooth running engine. I got 160,000 miles and it was running fine...until. I replaced my computer and the EGR valve which made it run a little better, but my shop still thinks it's the injectors, so I guess that's next.

 

It's not a very bad job at all. Also, I'd suggest getting an ohm meter out and checking the resistance of the injector coils, just pop off connector at each injector and stick the probes on the two tangs coming out of the injector. Check them cold, run the engine until it comes up to normal operating tempature, shut down and check them again.

If all your injectors are reading around 15-16 ohms, I'd do a fuel pressure leakdown test to determine if the injectors are leaking.

If the resistances are good and the rail holds fuel pressure well, I'd question replacing the injectors.

More likely than not, though, given the year of your car I'd bet that the injector coils are degrading.

Good luck!

Ben

 

You really need to take out those injectors and send them to Rich at Cruizin Performance...he does a wonderful job...flow tests them, cleans them again and puts on new o-rings and pintles....plus sends you a readout of the before and after flow charts... I believe it's like $11 per injector...

Believe me, I am NO mechanic but I tackled this job myself...I did ask a fellow forum member to come over and "supervise"...he had never pulled his but it was not a problem...I followed the directions in this link..

http://www.witchhunter.com/lt1injectorreplace2.htm

I can give you a couple of simple tips if you decide to pull them yourself...PM or email me...good luck

p.s. with shipping both ways you will have like new OEM injectors for around $125.00...