Fouled Plugs , Oil Low , Idle Issue - Mustang Evolution

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Old 02-17-2014, 12:36 PM   #1
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Fouled Plugs , Oil Low , Idle Issue

So my buddy who did the 4V swap just sold it to my other friend for 6k which I think is a rip off ..

Anyways the new owner is noticing when we comes to a stop the car dies..
No codes ..

Also he checked the oil and it was barely on the dipstick
I witnessed them put the correct oil into the car.. No leaks, new seals..
Internal oil consumption ?

Also they replaced the plugs too, but they are all black and fouled..

Any ideas ?

I need real tech opinions

I figured maybe It's one of these ..

A piston has low compression
Incorrect valve timing problem
A damaged cylinder head
Air / fuel problem
Incorrect gap on plugs maybe
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Old 02-17-2014, 12:51 PM   #2
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It could be all these but my guess if the is oil on plugs then you have bad rings or bad valve guid/seal id run a compression test to it if you find a bad one if you pit about a cap (the cap from a quart of oil) of oil into the cylinder and the compression improves then your position rings are bad and of it doesn't then you have a bad valve. And if the all are fine id take the valve covers off and check the valve stem seals
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Old 02-17-2014, 01:01 PM   #3
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Are the valve stem seals that easy to access ?
I need to change mine too lol
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Old 02-17-2014, 01:05 PM   #4
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Quote:
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Are the valve stem seals that easy to access ?
I need to change mine too lol

Ummn tbh i have no idea haha iv only put them in when i rebuilt my engine you would have to take you valves off
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Old 02-17-2014, 01:40 PM   #5
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Yeah just realized how much work is needed, forget that
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Old 02-17-2014, 04:02 PM   #6
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Ummn tbh i have no idea haha iv only put them in when i rebuilt my engine you would have to take you valves off
the springs not valves
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Old 02-17-2014, 04:04 PM   #7
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I replaced springs once on a pushrod heads , never again.
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Old 02-17-2014, 05:22 PM   #8
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Ha its not that hard on pushrods just take the rocker arm off and get a over head valve spring compressor
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Old 02-17-2014, 05:39 PM   #9
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Ha its not that hard on pushrods just take the rocker arm off and get a over head valve spring compressor
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Old 02-17-2014, 06:11 PM   #10
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No mystery, the engine is shot--run dry and wet compresion tests, and a vacuum test, and you be able to find out just exactly what is wrong...
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Old 02-17-2014, 08:10 PM   #11
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Is this the engine where it had like 130k miles on it?
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Old 02-17-2014, 09:48 PM   #12
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Yes scot

Well the plugs were fine they were gapped to .62

I re gapped them to 0.54

I cleaned out the IAC

And it did okay, but started acting up bad and kept dieing
After driving for a lil bit it stops turning off ,

Also it's VERY hard to get into gear , it feels like the cable isn't engaging correctly , and grinds sometimes
And does not want to go into gear at high rpms

Also they did the steering shaft but man it feels so loose, and feels like I'm driving a boat .. It wiggles side to side big times, doesn't feel good at all..
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Old 02-18-2014, 07:30 AM   #13
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And dude paid $6k for it? You might need to mediate some sort of refund if they are both friends...
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Old 02-18-2014, 07:49 AM   #14
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Exactly what I told him
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Old 02-18-2014, 10:10 PM   #15
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Well I fixed the transmission issue
I replaced quadrant with a steeda one and adjusted the clutch cable. Man world of a difference.
Stock quad teeth were rounded out


Now to figure out the idle issue
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Old 02-18-2014, 10:12 PM   #16
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Quote:
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Well I fixed the transmission issue
I replaced quadrant with a steeda one and adjusted the clutch cable. Man world of a difference.
Stock quad teeth were rounded out


Now to figure out the idle issue

Have you tires to clean all the air sensors or throttle body? Or check for vacuum leaks?
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Old 02-18-2014, 10:35 PM   #17
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It's probably the original IAC. Cleaning it does no good if it's worn out...
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Old 02-18-2014, 10:37 PM   #18
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It's probably the original IAC. Cleaning it does no good if it's worn out...

Well only one way to find out haha
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Old 02-19-2014, 03:48 PM   #19
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Well wouldn't it throw a code if it would be bad ?
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Old 02-19-2014, 04:15 PM   #20
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Quote:
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Well wouldn't it throw a code if it would be bad ?

Not necessarily it could be giving a false reading
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Old 02-19-2014, 04:21 PM   #21
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Quote:
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Well wouldn't it throw a code if it would be bad ?

Not necessarily it could be giving a false reading
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Old 02-19-2014, 05:46 PM   #22
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The IAC is not a monitored device, its failure is indicated by the PCM's not being able to control idle speed...
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