 First time breaking down, Possible problems |
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 Aug 18, 2013 - 3:38 PM
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Enthusiast  Joined Jun 25, '08 From CA Currently Offline Reputation: 0 (0%)  |
Ok so last night my car decided to take a dump on me, everything was running smoothly then when I came to a light and tried to accelerate my car started sputtering and went very slow no matter how much gas i tried giving it, after about 20 feet it just died. She still cranks over and it sounds like it sputters but doesnt fire up. I tried using my scanner to see if any codes came up but nothing, so my initial deduction is probably the fuel pump but i'm not ruling out the ignition system, any ideas what would cause it to do that before dying completely?
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Aug 18, 2013 - 3:51 PM
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Enthusiast Joined Mar 3, '05 From Richmond, B.C. Currently Offline Reputation: 0 (0%) |
Start with the ignition system -- pull each sparkplug, ground it and crank the engine. If you get adequate spark, you can move on to the fuel and air systems, though if your plugs are wet with gas after cranking that is a good sign the fuel system is working. If you don't get adequate spark, then you start working up the ignition system until you reach a working component; the component prior is what has failed.
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Aug 18, 2013 - 3:52 PM
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Enthusiast Joined Jun 25, '08 From CA Currently Offline Reputation: 0 (0%) |
QUOTE (Galcobar @ Aug 18, 2013 - 3:51 PM)  Start with the ignition system -- pull each sparkplug, ground it and crank the engine. If you get adequate spark, you can move on to the fuel and air systems, though if your plugs are wet with gas after cranking that is a good sign the fuel system is working. If you don't get adequate spark, then you start working up the ignition system until you reach a working component; the component prior is what has failed. thanks i'll do just that |
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Aug 18, 2013 - 4:21 PM
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 Enthusiast Joined Mar 15, '07 From Tennessee Currently Offline Reputation: 52 (100%) |
Timing belt...
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Aug 18, 2013 - 4:28 PM
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Enthusiast Joined Jun 25, '08 From CA Currently Offline Reputation: 0 (0%) |
QUOTE (njccmd2002 @ Aug 18, 2013 - 4:21 PM) Timing belt... i suppose it's possible but I had it changed at 223000 miles and its only about 253000 right now so thats kinda premature for the TB |
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Aug 18, 2013 - 10:57 PM
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 Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
If you have fuel and spark I'd look into the MAP sensor.
-------------------- 2001 Miata LS 5-speed
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Aug 19, 2013 - 12:00 AM
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Enthusiast Joined Jan 16, '12 From 860, ct Currently Offline Reputation: 0 (0%) |
The mileage tells me possible clogged cat. ST or GT?
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Aug 19, 2013 - 12:16 PM
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Enthusiast Joined Jun 25, '08 From CA Currently Offline Reputation: 0 (0%) |
QUOTE (bnr32celica @ Aug 19, 2013 - 12:00 AM) The mileage tells me possible clogged cat. ST or GT? It's a GT and after some test i'm positive its a fuel issue, I cranked the engine with the spark plug wires off and some spare plugs and they fired, then i removed the plugs on the car and they weren't fouled or wet from fuel, plus I could smell no fuel coming from the spark plug tube which after cranking should have had some fuel if the system was working shouldn't it? |
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Aug 19, 2013 - 1:24 PM
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Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
It's possible a fuse or relay blew as well, so I'd look into those before replacing parts.
-------------------- 2001 Miata LS 5-speed
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Aug 20, 2013 - 8:08 AM
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Enthusiast Joined Oct 24, '09 From Appleton, Wisconsin 54915 Currently Offline Reputation: 7 (100%) |
While you're at it trigger the fuel pump and see if it activates. When did you change your fuel filter last?
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Aug 21, 2013 - 3:19 PM
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Enthusiast Joined Jun 25, '08 From CA Currently Offline Reputation: 0 (0%) |
QUOTE (cyberblader1130 @ Aug 20, 2013 - 8:08 AM) While you're at it trigger the fuel pump and see if it activates. When did you change your fuel filter last? well i tested a new relay that proved not to be the problem so I'm gonna try pulling out the fuel pump now, anyone know a good place to relieve fuel pressure?? and truth be told the fuel filter is one thing i've never changed just because of how easy it is to bend the line connecting to it, I was planning on having a dealer do it so if they mess up its on them |
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Aug 21, 2013 - 8:14 PM
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Enthusiast Joined Jun 25, '08 From CA Currently Offline Reputation: 0 (0%) |
So needless to say i found the problem and it wasn't my fuel pump, i pulled that out and put some power from a jumper box to it and sure enough it was pumping, so I double checked the ignition and I was getting spark but something wasn't right the firing order wasn't what it should be it and the sparks were semi erratic so I popped of my cap and rotor and here's what I found
   well problem solved |
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