Fat Ryan Posted April 15, 2005 Report Share Posted April 15, 2005 Well, my car seems to be running fine now (except for this hesitation and sputter). The mechanic said i probably got a bad injector. im taking it to a dealership to find out 4 sure. if they are bad, where can i get better ones? i dont want to install shitty injectors, i want good ones that will last. this is for my 89 grand prix 2.8l. also, does the intake manifold gasket problem apply to the 2.8l engine or just the 3.1? thanx Quote Link to comment Share on other sites More sharing options...
Fat Ryan Posted April 15, 2005 Author Report Share Posted April 15, 2005 oh, one more thing. if any1 has any tips for replacing the injectors, please tell me. thanx Quote Link to comment Share on other sites More sharing options...
cutlsp Posted April 15, 2005 Report Share Posted April 15, 2005 the intake problem applies to the 3100 and the 3400 but some 2.8s and 3.1s have this problem too. your injectors are just fine i would get a set from a junk yard and ship them and the fuel rail off to be rebuilt and bored out if you want better injectors . Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted April 15, 2005 Report Share Posted April 15, 2005 Many years ago, I bought a replacement injector from O'Reilly. It's still good. An auto parts store injector should be fine. Quote Link to comment Share on other sites More sharing options...
Fat Ryan Posted April 15, 2005 Author Report Share Posted April 15, 2005 ok, i just dont want the OEM junk. Thanx Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted April 15, 2005 Report Share Posted April 15, 2005 The OEMs couldn't be that bad, after all, they probably lasted 16-17 YEARS! Quote Link to comment Share on other sites More sharing options...
Fat Ryan Posted April 16, 2005 Author Report Share Posted April 16, 2005 well the eng only has 60k on it, so they must really suck then. id rather spend a little extra $$$ on sweet ones anyways Quote Link to comment Share on other sites More sharing options...
cutlsp Posted April 16, 2005 Report Share Posted April 16, 2005 well its been sitting to long then you need to replace them . its not the injectors my car has 220k on it with the original injectors. Quote Link to comment Share on other sites More sharing options...
Fat Ryan Posted April 16, 2005 Author Report Share Posted April 16, 2005 well either way. its apparently a common problem with gm engines. so id rather not risk it. Quote Link to comment Share on other sites More sharing options...
1990lumina Posted April 16, 2005 Report Share Posted April 16, 2005 I've never had problems with injector either...but I guess if it sits long enough they will gum up. I'd stick with OEM, or the generic aftermarket stuff. If you went with bigger injectors and stuff you'd also want to upgrade you fuel rail and delievery system for maximum benefit I'd think. Â - Jeff L. Quote Link to comment Share on other sites More sharing options...
cutlsp Posted April 16, 2005 Report Share Posted April 16, 2005 ???? DUDE your not listening the stock injectors in my car have 220000+ miles on them and are still working fine. the other thing is they don't make any injectors to upgrade our cars Quote Link to comment Share on other sites More sharing options...
Fat Ryan Posted April 16, 2005 Author Report Share Posted April 16, 2005 ^^^that was my original question...i just didnt want to buy OEM if i had a choice. your lucky if you injectors lasted that long, i heard you. but mine are most likely bad and i read and heard that the 2.8Ls have injectore problems. so id rather get aftermarket (and not "bigger" ones, just better quality). but if they dont make them, ill hafta get OEM. Quote Link to comment Share on other sites More sharing options...
cutlsp Posted April 16, 2005 Report Share Posted April 16, 2005 the car will do fine if once a month you make a point of dumping some rxp in with the gas thats what i do and my car is just fine (also helps i run premium the car runs better on it i think) people say the grade the gas is doesn't matter but the higher the grade the less explosive force the gas has. but also the cleaner burning it is 8) Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted April 16, 2005 Report Share Posted April 16, 2005 the car will do fine if once a month you make a point of dumping some rxp in with the gas thats what i do and my car is just fine (also helps i run premium the car runs better on it i think) people say the grade the gas is doesn't matter but the higher the grade the less explosive force the gas has. but also the cleaner burning it is 8) Â You run premium in your Cutlass? Â wtf? Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted April 16, 2005 Report Share Posted April 16, 2005 Accel makes injectors that will fit the 3100, let me find the webpage and Ill post it Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted April 16, 2005 Report Share Posted April 16, 2005 14, 17, and 21 lbs per hour fuel rate accel fuel injectors http://www.jcwhitney.com/autoparts/Product/tf-Browse/s-10201/Pr-p_Product.CATENTRY_ID:2009413/showCustom-0/p-2009413/N-111+10201+600010351/c-10101 Â I was thinking about buying these for my car but theres nothing wrong with the OEM ones so Im not going to bother until the OEM ones fail Quote Link to comment Share on other sites More sharing options...
cutlsp Posted April 16, 2005 Report Share Posted April 16, 2005 the car will do fine if once a month you make a point of dumping some rxp in with the gas thats what i do and my car is just fine (also helps i run premium the car runs better on it i think) people say the grade the gas is doesn't matter but the higher the grade the less explosive force the gas has. but also the cleaner burning it is 8) Â You run premium in your Cutlass? Â wtf? uh yeah i do i have a reason for doing it to :oops: Quote Link to comment Share on other sites More sharing options...
Fat Ryan Posted April 16, 2005 Author Report Share Posted April 16, 2005 Accel makes injectors that will fit the 3100, let me find the webpage and Ill post itmine is the 2.8. Quote Link to comment Share on other sites More sharing options...
Fat Ryan Posted April 16, 2005 Author Report Share Posted April 16, 2005 the car will do fine if once a month you make a point of dumping some rxp in with the gas thats what i do and my car is just fine (also helps i run premium the car runs better on it i think) people say the grade the gas is doesn't matter but the higher the grade the less explosive force the gas has. but also the cleaner burning it is 8)you have it backwards. when the octane is higher, there is a more explosive combustion...resulting in less liquid emissions. Quote Link to comment Share on other sites More sharing options...
FastSE2DR Posted April 16, 2005 Report Share Posted April 16, 2005 higher octane does not burn as good... Quote Link to comment Share on other sites More sharing options...
Fat Ryan Posted April 16, 2005 Author Report Share Posted April 16, 2005 yes it does. why do you think its for the expensive cars. it combusts more of the actual fuel. It provides more power and better mileage Quote Link to comment Share on other sites More sharing options...
digitaloutsider Posted April 16, 2005 Report Share Posted April 16, 2005 yes it does. why do you think its for the expensive cars. it combusts more of the actual fuel. It provides more power and better mileage It has absolutely nothing to do with the price of the car. It has to do with the compression of the engine. The higher the compression, the higher octane fuel it'll require. Quote Link to comment Share on other sites More sharing options...
FastSE2DR Posted April 16, 2005 Report Share Posted April 16, 2005 no it doesnt do anythin for power...it helps when you have high compression cause it doesnt detonate...i would say maybe the way to put it is it helps to SUPPORT more power...hence why i run race gas in my car not because it gives me more power but i can run more boost and timing because the race gas either 100 or 110 octane resists detonation... Quote Link to comment Share on other sites More sharing options...
Fat Ryan Posted April 16, 2005 Author Report Share Posted April 16, 2005 yes it does. why do you think its for the expensive cars. it combusts more of the actual fuel. It provides more power and better mileage It has absolutely nothing to do with the price of the car. It has to do with the compression of the engine. The higher the compression, the higher octane fuel it'll require. that was my point Quote Link to comment Share on other sites More sharing options...
FastSE2DR Posted April 16, 2005 Report Share Posted April 16, 2005 yeah but you said it combusts more of the actual fuel...thats not true and it doesnt provide more power and better mileage...you should ALWAYS run the minimum octane rating Quote Link to comment Share on other sites More sharing options...
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