can't drift...miata doesn't want to redline

Nemesis · 03-30-2004, 05:54 PM

Can't seem to get my car to redline....92 mx5....when it reaches 4500 rpm's the needle starts to go up and down, but u can tell it's working its way up...ands the car jerks...anybody know the problem? If you need further details...AIM me @ d0rimx5...the "o" is a zero

slipangle · 03-31-2004, 12:33 AM

you didnt take the thing to redline a few times before you bought it? bad idea. as for me, i have no idea what it could be. timing, ignition, or misfiring maybe? no freakin clue

JunpoweR · 03-31-2004, 02:05 AM

sounda like it could be anything..
ok here is what I would check for..

mixed up plug wires
check timing
check ignition
grounding points
add new grounds to firewall and engine block
Change spark plugs
AFM or MAFS check it(mas air flow sensor\air flow meter)

and if none of this works
take it to mazda service center or some other shop

CrazyHawaiian · 03-31-2004, 02:38 AM

check your air metering system in the intake.

theflatlander · 03-31-2004, 08:14 AM

could be a really plugged exhaust.

Nemesis · 03-31-2004, 08:29 AM

i forgot to put this in.....when i'm in neutral i can rev it up all the way to redline....sorry boout that...i thought i wrote that....

Nemesis · 03-31-2004, 08:37 PM

changin spark plugs and wires within this week...i'll update...

QuickStyle · 04-01-2004, 09:55 AM

pull out the spark plugs and see if they are dry.

Emagdnim · 04-01-2004, 10:27 AM

if it seems healthy in neutral then its probaly drivetrain related. Is there any noise comin from the transmisson.

fuse · 04-01-2004, 10:51 AM

i cant remember if the 92 has electronic spark control or not so if it has a distributor make sure all the wires and or vacume lines are connected the car may not be advancing when it sould

theflatlander · 04-01-2004, 11:10 AM

Quote:

Originally posted by Nemesis
i forgot to put this in.....when i'm in neutral i can rev it up all the way to redline....sorry boout that...i thought i wrote that....

does the miata have primary and secondary injectors?, ifso it sounds like the secondaries aren't coming on. had the same problem with my fc, turned out i had a vac. line pop off a sensor.

sil180sx · 04-03-2004, 03:26 AM

you say its fine in neutral but runs like *Censored**Censored**Censored**Censored* with a load? my friend had a problem like that turned out his fuel pump was goin out

Drift For Food · 04-03-2004, 10:35 AM

Yep, I was thinking fuel pump too. If everything's normal up to 4500rpm and just starts to get worse, you have something that's limitting you. Basically, it could be something like a clogged intake(very dirty air filter?) or a limit on fuel flow(bad fuel pump or clogged fuel filter) or something with the exaust(clogged in some way?). High reving in neutral doesn't take much effort. Under load is when you're going to see a strain on some part of the system. You just need to figure out what. I'd check the fuel system first. I assume you replace your air filters regularly or use a high flow one like a K&N or something. As far as exaust, I've never been aware of exaust getting clogged up unless rodents deside to make residence in your exaust, lol. "a banana in the tail pipe?" (Eddie Murphy) lol.

I'd look at the fuel pump and fuel filter, my guesses.

Nemesis · 04-03-2004, 05:15 PM

yea, turn's out spark plug's and wires were fine, i guess i gotta check fuel now...the exhaust is fine and the intake filter is brand spanking new...or at least, that's what it looks like....so i guess fuel is the next step, new fuel filter...here i come

JDM EUNOS · 04-18-2004, 11:56 PM

could also be a plugged cat too, in my previous miata my problem turned out to be a clogged up fuel filter.

03-30-2004, 05:54 PM	#1
Nemesis Boro Miata Join Date: Nov 2003 Location: San Antonio Posts: 722	can't drift...miata doesn't want to redline Can't seem to get my car to redline....92 mx5....when it reaches 4500 rpm's the needle starts to go up and down, but u can tell it's working its way up...ands the car jerks...anybody know the problem? If you need further details...AIM me @ d0rimx5...the "o" is a zero

03-31-2004, 02:05 AM	#3
JunpoweR Registered User Join Date: Jul 2003 Location: ~San~Francisco~415~510~ Posts: 434	sounda like it could be anything.. ok here is what I would check for.. mixed up plug wires check timing check ignition grounding points add new grounds to firewall and engine block Change spark plugs AFM or MAFS check it(mas air flow sensor\air flow meter) and if none of this works take it to mazda service center or some other shop Last edited by JunpoweR; 03-31-2004 at 02:44 AM.

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03-31-2004, 12:33 AM	#2
slipangle Guest Join Date: Feb 2004 Location: Socal Posts: 29	you didnt take the thing to redline a few times before you bought it? bad idea. as for me, i have no idea what it could be. timing, ignition, or misfiring maybe? no freakin clue

03-31-2004, 02:38 AM	#4
CrazyHawaiian Sample One Time!! Join Date: May 2003 Location: Hawaii Posts: 1,276	check your air metering system in the intake.

03-31-2004, 08:14 AM	#5
theflatlander Registered User Join Date: Dec 2003 Location: North Dakota Posts: 393	could be a really plugged exhaust.

03-31-2004, 08:29 AM	#6
Nemesis Boro Miata Join Date: Nov 2003 Location: San Antonio Posts: 722	i forgot to put this in.....when i'm in neutral i can rev it up all the way to redline....sorry boout that...i thought i wrote that....

03-31-2004, 08:37 PM	#7
Nemesis Boro Miata Join Date: Nov 2003 Location: San Antonio Posts: 722	changin spark plugs and wires within this week...i'll update...

04-01-2004, 09:55 AM	#8
QuickStyle Registered User Join Date: Nov 2003 Location: hiroshima, japan Posts: 142	pull out the spark plugs and see if they are dry.

04-01-2004, 10:27 AM	#9
Emagdnim 400lbs Gorillia Join Date: Feb 2004 Location: Brooklyn Posts: 269	if it seems healthy in neutral then its probaly drivetrain related. Is there any noise comin from the transmisson.

04-01-2004, 10:51 AM	#10
fuse Newbie Join Date: Jan 2004 Location: riverside, CA Posts: 34	i cant remember if the 92 has electronic spark control or not so if it has a distributor make sure all the wires and or vacume lines are connected the car may not be advancing when it sould

04-03-2004, 03:26 AM	#12
sil180sx Registered User Join Date: Dec 2003 Location: okinawa,japan Posts: 152	you say its fine in neutral but runs like CensoredCensoredCensoredCensored with a load? my friend had a problem like that turned out his fuel pump was goin out

04-03-2004, 10:35 AM	#13
Drift For Food OMG the ground's white! Join Date: Feb 2004 Location: Minnesota Posts: 676	Yep, I was thinking fuel pump too. If everything's normal up to 4500rpm and just starts to get worse, you have something that's limitting you. Basically, it could be something like a clogged intake(very dirty air filter?) or a limit on fuel flow(bad fuel pump or clogged fuel filter) or something with the exaust(clogged in some way?). High reving in neutral doesn't take much effort. Under load is when you're going to see a strain on some part of the system. You just need to figure out what. I'd check the fuel system first. I assume you replace your air filters regularly or use a high flow one like a K&N or something. As far as exaust, I've never been aware of exaust getting clogged up unless rodents deside to make residence in your exaust, lol. "a banana in the tail pipe?" (Eddie Murphy) lol. I'd look at the fuel pump and fuel filter, my guesses.

04-03-2004, 05:15 PM	#14
Nemesis Boro Miata Join Date: Nov 2003 Location: San Antonio Posts: 722	yea, turn's out spark plug's and wires were fine, i guess i gotta check fuel now...the exhaust is fine and the intake filter is brand spanking new...or at least, that's what it looks like....so i guess fuel is the next step, new fuel filter...here i come

04-18-2004, 11:56 PM	#15
JDM EUNOS DRFT 2NR Join Date: Mar 2004 Location: ohio Posts: 109	could also be a plugged cat too, in my previous miata my problem turned out to be a clogged up fuel filter.