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Old 03-16-2010, 09:41 PM   #1
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So i just started my car for the 1st time in 3months...i know i know i shoulda periodically started it. I'm prepared for flaming.

But back to the issue. The car started right up the 1st try and immediately it didn't sound right, but brushed it off as it was working out the gunk etc....Idle was very rich at 10.x-11.3ish

i let it idle for about 15 min, no major change idle got a little leaner 11.x-12.2ish, went to the gas station, put some fuel injector cleaner in it, and a full tank of 93. drove it for about 15min and still no change.

decided to try some boost and see how it is...well that was no good, instant hesitation and stuttering. and i noticed oil pressure dropped a little bit. SO i went to a jiffy lube and got an oil change. oil pressure back to normal, but still stuttering and having hesitation...still running super rich.

I decide to go to pepboys and get some new spark plugs, get home gap them to .034, put em in, and of course 0 change. still having same problems.
and then i noticed my gas gauge, I used almost a 1/4 tank of gas going a total of maybe 15miles

No black smoke, no puddles of gas, no visible leaks, my vacuum lines look fine and all are tight and secure

I've narrowed it down to Injectors stuck open? and got an idea from a friend that the FPR might be stuck closed? both would cause fuel dumping in to the engine.

any other ideas?
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Old 03-16-2010, 11:20 PM   #2
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Bad gasoline... 2 months is enough time for gas to go stale, not combust properly etc...

If you have a low tank of fuel, Top it off with fresh stuff, perhaps a little CAM 2 for octane boost... if lots of gas, pump it out. Smell the fuel. bad gas has a distinctly different smell.

I try and leave no gas in anything that is parked for extended periods. lawnmowers, Weedeaters, Blowers, saws, Even my Mini.. Hagerty Magazine even just had an article talking about how gasoline goes flat quickly now.

Just a thought

Goodluck
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Old 03-16-2010, 11:24 PM   #3
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would that stay-bil stuff work in a car? i know it does wonders in my generators and boat engines.
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Old 03-16-2010, 11:55 PM   #4
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Quote:
Originally Posted by disturbedfan121 View Post
went to the gas station, put some fuel injector cleaner in it, and a full tank of 93
lol the tank was basically empty when i parked it...
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Old 03-17-2010, 12:02 PM   #5
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Try reloading your MS maps(if you saved them)
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Old 03-17-2010, 01:28 PM   #6
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yea, gotta get them from paul, don't even have my tune on my new laptop, thanks OG didn't even think of that....how's your house btw? wayne got hit really bad in the nor'easter we had
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Old 03-17-2010, 11:38 PM   #7
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Everyone else is riding around in boats. We are high and dry, but my boat sunk in my pond. Go figure
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Old 04-01-2010, 05:26 PM   #8
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so, its not injectors, its not FPR. its the Coils, cyl 2 & 4 aren't firing, taking off COP's and putting stock ignition on to see if it fixes it.
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Old 04-01-2010, 05:38 PM   #9
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edit: nevermind
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Old 04-01-2010, 05:45 PM   #10
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lol what were you gonna say?
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Old 04-01-2010, 05:48 PM   #11
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i was going to say "stuck injector". i'm suprised it ran at all if you were only getting spark on 2 cylinders.
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Old 04-01-2010, 05:55 PM   #12
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yea it didn't run well at all, im surprised it drove to the store and back
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Old 04-01-2010, 07:49 PM   #13
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So you went out and boosted your ill-sounding miata and then took it somewhere for an oil change? Hmmmm.......
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Old 04-01-2010, 08:43 PM   #14
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Quote:
Originally Posted by Turbo_4 View Post
So you went out and boosted your ill-sounding miata and then took it somewhere for an oil change? Hmmmm.......
Surprised it took this long for this post to come up... Why the hell would you take your turbo miata to Jiffy Lube EVER, especially when it's having issues?
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Old 04-01-2010, 10:01 PM   #15
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didn't really boost. and thought maybe it needed to just open up and get whatever gunk was there out.

Anyway, its not the COPs, same problem with stock ignition, looking into injectors more. I disconnected injector number 2 from the harness and there was no change. When the same thing was done to the other cylinders car would run even worse. Grabbed another injector harness and gonna swap it out and see what happens.
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Old 04-01-2010, 11:13 PM   #16
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Did the car feel really rough all the time or did it smooth out sometimes?

If its an intermittent thing maybe it has something to do with condensation from sitting?
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Old 04-01-2010, 11:53 PM   #17
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You blew the welds on your intake manifolds paul walker. Seriously, if you unhooked your injector and nothing changed....... that could be it.
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Old 04-02-2010, 12:59 AM   #18
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Quote:
Originally Posted by chicksdigmiatas View Post
You blew the welds on your intake manifolds paul walker. Seriously, if you unhooked your injector and nothing changed....... that could be it.
no really? im pretty sure thats what it is too, hence why i said i'm going to put another one in tomorrow. and see what happens.

is your car boosted or did china not make your turbo yet?>
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Old 04-02-2010, 01:00 AM   #19
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Quote:
Originally Posted by Sparetire View Post
Did the car feel really rough all the time or did it smooth out sometimes?

If its an intermittent thing maybe it has something to do with condensation from sitting?
it actually did smooth out occasionally, which is what threw me off.
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Old 04-02-2010, 01:09 AM   #20
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did you try different plug wires?
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