bad injectors
Thread Starter
Cruising
Joined: Nov 2006
Posts: 11
Likes: 0
From: hilliard oh
bad injectors
I have a new exhaust and cat changed plus wires cap rotor, filters, new fuel pump. Now it is down to the injectors i think. I tested them for resistance and 4 are 12-13 and 4 are 15-16. Are these bad. I have a loss of power at WOT and it just bogs but runs fine otherwise. If its not the injectors what else could it be. Should I test to see if they are geting voltage? How would i do this? Any help is greatly appreciated. If I do need Injectors, do i stay with the 22lb or can I change them?
Thanks
Tim
Thanks
Tim
Drifting
Joined: Apr 2005
Posts: 1,283
Likes: 12
From: New York
The injectors are bad, they should be 16.5, +/- .3 according to the GM service bulletin. That is normal, I just replaced all of mine on my 91. I would stick with stock 22 lb. units, anything else is overkill on a stock car....
Last edited by LS6 Motor; Nov 14, 2006 at 07:31 PM.
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Originally Posted by tims red 1991 vette
I tested them for resistance and 4 are 12-13 and 4 are 15-16. Are these bad.
Originally Posted by tims red 1991 vette
I have a loss of power at WOT and it just bogs but runs fine otherwise. If its not the injectors what else could it be.
Originally Posted by tims red 1991 vette
Should I test to see if they are geting voltage? How would i do this? Any help is greatly appreciated.
Originally Posted by tims red 1991 vette
If I do need Injectors, do i stay with the 22lb or can I change them?
Drifting
Joined: Apr 2005
Posts: 1,283
Likes: 12
From: New York
Originally Posted by RRT vette
They all should read around 16-17 ohms each. I would say there are 4 that have a problem...not bad but probably bad enough to be changed.
Really though, it's a moot point, because if your going to tear it down, replace all eight.............
Melting Slicks
Joined: Apr 2002
Posts: 2,118
Likes: 0
From: St. Charles, MO Route 66 Corvette Club
Originally Posted by KODAVETTE
I respectfully disagree, as I stated above, the tech bulletin clearly states on Rochester Products Multitechs, that they should be 16.5, +/- .3
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Originally Posted by KODAVETTE
I respectfully disagree, as I stated above, the tech bulletin clearly states on Rochester Products Multitechs, that they should be 16.5, +/- .3
Really though, it's a moot point, because if your going to tear it down, replace all eight.............
Really though, it's a moot point, because if your going to tear it down, replace all eight.............
Originally Posted by RRT vette
They all should read around 16-17 ohms each.
Originally Posted by RRT vette
I would replace all with the same brand/# rating after you have made sure they are the cause of the "bogs down".
Originally Posted by tm2k
All of mine on my 95 LT1 are at 13.5 ohms +/- .3 ohms. Are they considered marginal, good or bad?
Melting Slicks
Joined: Apr 2002
Posts: 2,118
Likes: 0
From: St. Charles, MO Route 66 Corvette Club
tm2k: The fuel injectors in question are GM Multecs and these were used in L98 engines during the years 1989 through 1991. You appear to have a LT1 engine and you will not Multec injectors.
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