Need to replace fuel injectors???
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 3,593
Likes: 103
From: Southern Indiana
Need to replace fuel injectors???
Started 89 (50000 miles) L-98 yesterday and it ran perfect and smooth idle, is there any reason to change out the injectors for a project or wait until later.
I going to take off the upper plemium, port it, get rid of the IAT sensor plug since I moved it, delete the EGR and replace the fuel regulator, so while its all apart replace them or not?
I going to take off the upper plemium, port it, get rid of the IAT sensor plug since I moved it, delete the EGR and replace the fuel regulator, so while its all apart replace them or not?
Instructor
Joined: Mar 2021
Posts: 169
Likes: 25
I'd run them. Maybe send them to Southbay injectors for a cleaning if the car will be down for awhile. Otherwise run a few tanks with some seafoam to clean them out.
Last edited by 93TALT4A4; Nov 7, 2021 at 12:29 PM.
Safety Car
Joined: Mar 2003
Posts: 3,583
Likes: 504
From: Indianapolis IN
Finalist 2020 C4 of the Year - Unmodified
C4 of Year Finalist (stock) 2019
If they are the original gray RP Multec injectors then I would replace them. They will fail, and you'll be tearing everything apart again. In this case, since you'll already have everything torn down that far, I would say making this a "one-and-done" project is your safest bet. 
Drifting
Joined: Feb 2016
Posts: 1,384
Likes: 339
From: Simi Valley CA
There are more efficient 4 hole injectors to upgrade to. I had planned on doing this on my 89, but never got to it. I did do it on my 93 Jeep and had great results. The old technology injectors are a single hole. Newer injectors have 4 holes that helps mist the fuel for better atomization.
Race Director
Joined: Oct 2000
Posts: 14,064
Likes: 1,166
From: N. Alabama
There are more efficient 4 hole injectors to upgrade to. I had planned on doing this on my 89, but never got to it. I did do it on my 93 Jeep and had great results. The old technology injectors are a single hole. Newer injectors have 4 holes that helps mist the fuel for better atomization.
Exactly. I went to the 30# injectors after porting my LT4 years ago. Of corse I had it tuned too. Just had them cleaned a couple of months ago for less than $200 and the car is performing great again.
Racer
Joined: Sep 2021
Posts: 483
Likes: 157
Well, with a 95 lt-1 and just looking to keep stock but over maintain and with 30k miles, sounds like replacing the original injectors is the ticket. I the car is all torn apart because Im doing all the front end gaskets, oil pan gasket, new h2o pump, new radiator....
What type injectors would you suggest?
Or, would you have them sent out to clean?
What type injectors would you suggest?
Or, would you have them sent out to clean?
