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SPI Performance (2000-2004) The place to chat about any 2.0L Split Port Injection engine performance, tuning and exhaust related upgrades.

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Old 07-06-2012, 07:56 PM   #1
_AdriaN_
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At a loss...

I'm at wits end trying to figure out what is the matter with my Foci. Lately it has been running VERY rough at lower speeds.

It's a 2000 SE w/ 2.0 SPI AUTO.

Symptoms

It spits and sputters then it will "catch" and take off. When this happens you can smell a bit of gas in the cabin. Once it takes off, the miss isn't there (much). You can cruise along at 80-90 MPH no problems. The issue is at lower speeds no matter the engine temperature.

Stuff recently done...
  1. Hollowed out CAT... Was glowing cherry red EDIT: Cannot afford a new one right now.
  2. New plugs
  3. New wires
  4. New fuel filter
  5. Used ignition coil

Side notes

OBD codes P0102 (MAF circuit low) and P0302 (Cylinder 2 Misfire) *On both coils
Oil on Cylinder 2 plug, rest look brand new
I've checked for vacuum leaks, can't find any
I've checked the wiring to the coil
Spark tested cylinder 2 and it has good spark

Have not compression tested but I'm not sure if it's needed??? It also seems unplugging the MAF makes it run a little different and sometimes kills the engine.

Also, I've pulled power to each injector as its running and 1,3,4 kill the engine however, 2 doesn't.

Any ideas?


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Old 07-06-2012, 09:03 PM   #2
Indy'sexclusiveZx3
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Bad injector Or going bad simple fix you already had the answer
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Old 07-06-2012, 09:44 PM   #3
_AdriaN_
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That's what I was thinking... It affected the performance but not like the other 3.

Is the oil on the plug a sign of anything?
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Old 07-06-2012, 11:41 PM   #4
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Maybe just a leaky valve cover gasket that would be my guess
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Old 07-07-2012, 01:35 AM   #5
follown
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Yes oil in the plug is due to bad valve cover gasket. I replaced mine a few months ago because it was leaking outside and once I started I found oil in 2 plugs.
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Old 07-07-2012, 07:30 AM   #6
_AdriaN_
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Thanks guys, I will try to get around to fixing these soon and report back.

To clarify, the oil is on the part spark plug down by the electrode(inside the block) not the outside. I took the valve cover off and the gasket didn't look too good as it was grooved in spots which I thought was weird.
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Old 07-07-2012, 03:43 PM   #7
_AdriaN_
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Swapped injectors around on 2 & 3 and still throwing a Cylinder 2 misfire. I'm going to compression test it when I get a chance, nobody to help today.

I'm hoping it's not something internal but if the compression test shows #2 has bad compression, what's the possible culprits?
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Old 07-09-2012, 02:30 PM   #8
jesusamares
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Have you checked your EGR gasket it, my old 2.0 had the same issue I swear I changed everything on that car and the day I changed out the EGR gasket the car started to work again.
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Old 07-10-2012, 07:17 PM   #9
_AdriaN_
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Quote:
Originally Posted by jesusamares View Post
Have you checked your EGR gasket it, my old 2.0 had the same issue I swear I changed everything on that car and the day I changed out the EGR gasket the car started to work again.
I will look into this. I have not checked the EGR stuff yet.
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Old 07-12-2012, 11:28 AM   #10
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how does your pcv tube look? off the valve cover into the intake, just below the throttle body. Mine was causing some driveability issues, bad idle, ect. I replaced the whole tube assembly (not the valve, however) and my SPI has been working great so far.. not the answer your looking for but a possible solution to future drivability isues
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