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Old 02-22-2014, 07:44 PM   #1
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Skip that won't go away

2003 Mustang Gt in October 2013 spun a rod bearing on Cyl #5. Didn't replace the bottom end until just a week ago.
Everything went in fine. Replaced with PowerSeal Crank Main(25mm) Rod(50mm)

After putting it all back together. It ran rough. Throwing all o2 codes it could, blowing smoke out and misfiring with cyl #2 40psi on compression. Did some investigating and found out where the Lifter on cyl #2 on the intake side jumped off. Causing the smoke and bad compression. The chain on bank 1 side had jumped time due to a bad timing tensioner. Replaced it and put back into time. No smoke but still a bad skip with o2 codes. Found out the EGR valve wasn't bolted correctly. Which fixed all the o2 codes.

Now it's a misfire on cyl #1 replaced plug and coil pack and still a skip ins the motor. I'm being told it could be in my tune.
Would a tune cause my computer to throw a misfire code?
Or a bad Alternator? My alternator does fluctuate in power. You can see it in my headlights.
Or something worse? I'm just out of ideas. It is running very rich.
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Old 02-23-2014, 08:47 AM   #2
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Checked the injecter?
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Old 02-23-2014, 12:12 PM   #3
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It's firing. But I did have to replace the fuel filter. It poured out like mud. So maybe it could be the injector
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Old 02-24-2014, 10:08 AM   #4
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May very well be clogged. IMO its a good idea to replace injectors anyway seeing as even well maintained ones get goobered up after awhile. I just pulled the orange tops in my 98 and they looked ok but they are not original to the car. I've pulled injectors that were 10 years old and they were practically falling apart.
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Old 02-25-2014, 05:17 PM   #5
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It was the injectors. Going to replace all of them along with new coils and plugs. Put the long tubes on it and have it tuned.
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Old 02-25-2014, 09:03 PM   #6
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Make sure you get OEM Ford coils, don't get MSD or Accel or any ebay junk. You can get them from Rockauto for about $30-$40 a coil. 2V and 4V use different coils so make sure you get them for SOHC obviously.
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Old 02-25-2014, 10:28 PM   #7
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Good job. I've seen injectors that looked like fudge batter was pressed into them. Total neglect of the fuel system for the car's whole life.
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Old 02-25-2014, 10:50 PM   #8
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So you're saying they had their fudge packed?
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Old 02-25-2014, 10:52 PM   #9
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Either the injector did, or the owner did when they got the bill for the repairs!
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Old 02-26-2014, 09:49 AM   #10
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I would hope he did the injectors himself. $5 fuel line disconnect tool and a 8mm deepwell and the rails lift right off... You really don't even have to do the fuel lines either, just remove the inlet tube, move a few wires/vac hoses out of the way and bang.
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Old 02-26-2014, 09:51 AM   #11
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That didn't happen. LOL
Its often easy to forget that some people just drive cars, and know not the first thing about maintaining / repairing them.
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Old 02-26-2014, 09:53 AM   #12
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Yeah I know and that saddens me. Same way with computers and smartphones. Any one of those things takes a dump and the owners is screwed and 90+% of ppl are clueless as to their functions. Injectors is an hour job to change with basic hand tools. Bleh... off soapbox lol.
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Old 02-26-2014, 09:56 AM   #13
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Keeps mechanics with food on the table....or beer in the hand
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