Multecs??
Thread Starter
Burning Brakes
Joined: Jan 2017
Posts: 961
Likes: 237
From: Diamondhead Mississippi
St. Jude Donor '17-'18-'19-'20-'21-'22
Race Director
Joined: Aug 2000
Posts: 11,470
Likes: 763
, one of the PO's changed them out. FWIW, iron head L98's usually had 24 pounders, aluminum head usually run 22 pound injectors. if your car is running decent, I wouldn't worry too much about it. 
Last edited by Joe C; Apr 30, 2017 at 02:25 AM.
Team Owner
Joined: Jul 2004
Posts: 28,376
Likes: 3,260
From: Hartford WI
Nobody knows till you test it. I had a small vacuum leak that shows up on the scanner but the ECM hid it
Thread Starter
Burning Brakes
Joined: Jan 2017
Posts: 961
Likes: 237
From: Diamondhead Mississippi
St. Jude Donor '17-'18-'19-'20-'21-'22
well, from the pic, you have an aluminum head L98, question is, what year? i'm curious about the green band. i'm thinkling it might indicate the flow rate. I have seen green band injectors like yours, that were on a land rover. , one of the PO's changed them out. FWIW, iron head L98's usually had 24 pounders, aluminum head usually run 22 pound injectors. if your car is running decent, I wouldn't worry too much about it.
, one of the PO's changed them out. FWIW, iron head L98's usually had 24 pounders, aluminum head usually run 22 pound injectors. if your car is running decent, I wouldn't worry too much about it. Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Race Director
Joined: Aug 2000
Posts: 11,470
Likes: 763
Last edited by Joe C; Apr 29, 2017 at 09:01 AM.
Racer
Joined: Nov 2015
Posts: 294
Likes: 40
From: Massachusetts
not 100% sure, but i'm thinking it had something to do with fuel additives re-acting with the injector's coil, or the insulating material on the coil windings. from what I understand, multec's made after 1995 corrected this problem. it doesn't matter though, the bad rap multecs got early on haunts them to this day.
Race Director
Joined: Aug 2000
Posts: 11,470
Likes: 763
Race Director
Joined: Aug 2000
Posts: 11,470
Likes: 763
Team Owner
Joined: Sep 2003
Posts: 20,172
Likes: 672
From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
I choose to switch because of the better nozzle pattern design.
Race Director
Joined: Aug 2000
Posts: 11,470
Likes: 763
- curious -- what's the flow rating on "pinks" and is there a different injector called out for an iron head vs. aluminum head 86? i'm running 24 pound (blues) on my iron head 85, and 22 pound (yellow) on my AL-head 90.
Team Owner
Joined: Jul 2004
Posts: 28,376
Likes: 3,260
From: Hartford WI
Only 2 reasons there is a SOTP gain. Placebo effect or your old set was dirty and or on the way out but the ECM is compensating
Racer
Joined: Nov 2015
Posts: 294
Likes: 40
From: Massachusetts
interesting, but isn't code P0300 a "random" misfire, and not cylinder specific? not sure I understand that code vs. injectors, unless all 8 injectors were somehow at fault. now if your code was P030X , where the X is cylinder specific, i'd say it could be related to injectors. not that i'm an expert at diagnostics, or anything - just asking.
In my case I probably had at least two faulty injectors. I know they get bad spray patterns which mean they can spray fuel in the cylinder, but not ignite. My check engine flashed which means fuel made it to the exhaust which makes sense.
Safety Car
Joined: Jun 2006
Posts: 4,008
Likes: 1,487
From: Ashland, OH
The orange,yellow, and blue tops are technically wrong for this application. Don't know why they throw them in but they do.
Team Owner
Joined: Jul 2004
Posts: 28,376
Likes: 3,260
From: Hartford WI
Sometimes it is about cost. If a set of 22 goes for 200 and 24 goes for 160 because it is more popular, I'd get 24 to save 40 because I know that the ECM will compensate