someone told me because my car has a 140000 miles on it i should clean my fuel injectors, well i bought some fuel injector cleaning fluid, this person also told me to use 91 octane fuel when i mix it is this accurate or is ther a better solution.
CAR: 87 300zx N/T
Regular injector cleaning is a myth. If the car is used regularly and at least once a week or so on the highway, it doesn't need injector cleaning. A car that has been sitting sporadically, or is only used for short trips, will likely need it. And it doesn't matter what gas you mix it with.
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1992 Yamaha FZR 1000. 145 Hp, all stock..
I was under the assumption that the 300 Z's only burned Hi-test gas.Do you guys use regular?How does the car run?Jamie
Never put anything under 87 octane in the turbo cars. I only used 91, but my boost was also double the stock psi.... Too much knock will blow your head gaskets, so consider your fuel choices carefully.
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1992 Yamaha FZR 1000. 145 Hp, all stock..
I was under the assumption that the 300 Z's only burned Hi-test gas.Do you guys use regular?How does the car run?Jamie
A stock Z31T and NA can run regular, and should run regular as long as they are stock. Mod the Turbo, or do alittle more then bolt ons to the NA and regular will not be good enough.
no i have not had my injectors cleaned or balanced. so how do i know i need my fuel injectors cleaned/replaced or not? and how much does something like that cost. the other thing is that my car is worrying me, because im getting this really ruff idle while its cold and through out the day. the car shakes and everything, now i dont think that has to do with injectors but im not sure where to start about the ruff idle. i replaced the fuel filter and a new pcv valve. im not sure what else to do, that i can do my self. i know i need a new fan clutch and timing belt alignment but i dont know if the will fix the ruff idle. any of u pros got some suggestions on where i can start that would be cool.
Last edited by chillow : Aug 17th, 2005 at 07:24 PM.
oh wow to be honest i dont want to dive into my engine i dont think im prepared for that. im taking it to a mechanic hes gonna take a look at it and everything. and the intake hoses are all sealed. im going to get my timing checked and go from there thanx guys for the info!!
ok so little update i replaced all my spark plugs and wires its still idling really ruff up too the point its hard to start in the morning and it will stall while idling ( happened 5 times allready) through out the day. i think im gonna replace the distributer and see what happens, what else could be the problem here guys?
ok so little update i replaced all my spark plugs and wires its still idling really ruff up too the point its hard to start in the morning and it will stall while idling ( happened 5 times allready) through out the day. i think im gonna replace the distributer and see what happens, what else could be the problem here guys?
also is the recall on injectors still in affect? and can i just go to any nissan dealer and get it done?
Call your local Nissan dealer and ask the service advisor if they will run your VIN to check for outstanding recall campaigns. Nissan will only ante up 1 time. If it's been done already...you're outa luck. If you don't get any help....let me know and I'll get it run for you.
ok worked on it alittle today, tryin to single out the problem ok car is still sputtiring, cap and rotor look fine. timing looks ok, fuel filter and air filter have been changed, the mechanic said injectors are fine, but the engine is still missing some where, so it leaves me with a couple questions.
1. could catalytic converter be messed up and cause this kind of cylinder missing?
2. is there a second fuel filter in the fuel tank? and its maybe plugged up.
3 fuel and air mixture is off, and how would i change that or find out how to correct it?
4. my negatice connection is corrodid and cracked, but still connected? doubt its the problem but still needs to be replaced.
ok worked on it alittle today, tryin to single out the problem ok car is still sputtiring, cap and rotor look fine. timing looks ok, fuel filter and air filter have been changed, the mechanic said injectors are fine, but the engine is still missing some where, so it leaves me with a couple questions.
1. could catalytic converter be messed up and cause this kind of cylinder missing?Wouldn't cause that kind of missing. You'd simply have no power.
2. is there a second fuel filter in the fuel tank? and its maybe plugged up.Sure. And that would make the engine run lean. Too lean to maybe even run, depending on how clogged it is.
3 fuel and air mixture is off, and how would i change that or find out how to correct it?That could be due to a malfunctioning MAF, stuck FPR, ECU problem, 02 sensor malfunction, in short, a lot of things.....
4. my negatice connection is corrodid and cracked, but still connected? doubt its the problem but still needs to be replaced.The car would not start if it was that much of a problem. Still may help to clean it up or replace it.
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1992 Yamaha FZR 1000. 145 Hp, all stock..
A stock Z31T and NA can run regular, and should run regular as long as they are stock. Mod the Turbo, or do alittle more then bolt ons to the NA and regular will not be good enough.
Actually, unless you open up the engine or increase the boost, 87 octane will be fine for either. Simply putting on a different exhaust or intake does not mean you need to run higher octane.
__________________ Disclaimer:
One thing you'll find about me is that I can be very helpful to people who take their time to ask complete questions with good grammar and punctuation. I'm also a real ass to people who don't show at least a little effort in their posts. Z31 Registry Z32 Registry
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