Oh Dammit. . .

Back in Black

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Oct 21, 2002

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Pittsburgh.. Ford salesmen at Woltz & Wind For

May 5, 2010

#1

• May 5, 2010

• #1

Well, I don't know what happened now but I started my car up today, and before I put it in gear the motor started to miss and heard a large tapping sound. My check engine light is on and its got a large miss all the way through and car wont go over 10 mph. .. .

any ideas?????

 

trinity_gt

10 Year Member

Jan 31, 2003

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May 5, 2010

#2

• May 5, 2010

• #2

You might have blown a spark plug out.

 

Back in Black

Don't feel bad. Almost 3 years on here and the onl

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Pittsburgh.. Ford salesmen at Woltz & Wind For

May 5, 2010

#3

• May 5, 2010

• #3

trinity_gt said:

You might have blown a spark plug out.

Click to expand...

I pulled all the plugs on the coils one by one and noticed a bigger miss with one unplgged. Thanks I will check it. Is it possible it came out of time?

 

Back in Black

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Pittsburgh.. Ford salesmen at Woltz & Wind For

May 5, 2010

#4

• May 5, 2010

• #4

I just found out my mechanic adjusted the throttle stop screw on the throttle body. . .that wouldn't have anything to do with it? It was tightened a bit to put the idle at 900. It was a 700 before cause of the break in tune with these cams and wanted to shut off

 

Back in Black

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Oct 21, 2002

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May 5, 2010

#5

• May 5, 2010

• #5

the noise I heard sounded like something in the head loose. It has done this before but straightened right back out

 

trombonedemon

Well-Known Member

Jun 25, 2009

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May 5, 2010

#6

• May 5, 2010

• #6

Pull the codes and report back. There are alot of sounds that are normal in the engine that tap. I heard an Explorer w/a blown spark plug. It sounded like a loud exhaust leak w/metallic tapping.

 

Back in Black

Don't feel bad. Almost 3 years on here and the onl

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Oct 21, 2002

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Pittsburgh.. Ford salesmen at Woltz & Wind For

May 5, 2010

#7

• May 5, 2010

• #7

Yeah it sounded like a marble bouncing around

 

LI98GTStang

Founding Member

Jun 22, 2000

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May 5, 2010

#8

• May 5, 2010

• #8

Don't mean to scare you. Does it sound like this vid? Spun bearing?
YouTube - 99 Mustang GT 2 Valve Rod Knocker

 

bhuff30

Founding Member

Dec 11, 2001

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Olathe KS

May 6, 2010

#9

• May 6, 2010

• #9

A rod bearing noise would be more obvious when the engine is hot. It would most likely be completely silent when you start the car, but once the oil is up to temp, at around 2000 rpm light load, it would be scary. Also, you wouldn't normally have a miss with a rod bearing.

Again, pull codes. The computer is telling you something, probably important, so listen to it. I wouldn't be surprised at all if it was something simple as a bad lifter.

 

Back in Black

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Oct 21, 2002

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Pittsburgh.. Ford salesmen at Woltz & Wind For

May 6, 2010

#10

• May 6, 2010

• #10

I've been thinking of that. I just gotta get a code scanner to it cause i cannot take it anywhere. Let's see tonight!

 

salprint

New Member

Aug 11, 2009

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Long Island, New York

May 6, 2010

#11

• May 6, 2010

• #11

This might sound stupid to some of you gearheads out there, but to me it seems like it could just be a hung valve. I've had that happen (not with the new Mustang) but with older cars when I went to move them from the garage out to the driveway and didn't give the oil enough of a chance to heat up. The next time I went to start it, a valve would hang, (sticky) and I'd have a miss and no compression in that cylinder. After it warmed up, the problem would go away. I've had that happen with a Chevy engine, a ford engine and a Toyota engine. Needless to say, I don't just move a car anymore without giving it 5 minutes of running time before shutting it off.

 

d98gt

Founding Member

Mar 14, 2002

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SE Texas

May 6, 2010

#12

• May 6, 2010

• #12

I wouldn't suggest putting the car under load until you pull the codes to see whats going. That will allow us to eliminate certain options.

 

Back in Black

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May 7, 2010

#13

• May 7, 2010

• #13

salprint said:

This might sound stupid to some of you gearheads out there, but to me it seems like it could just be a hung valve. I've had that happen (not with the new Mustang) but with older cars when I went to move them from the garage out to the driveway and didn't give the oil enough of a chance to heat up. The next time I went to start it, a valve would hang, (sticky) and I'd have a miss and no compression in that cylinder. After it warmed up, the problem would go away. I've had that happen with a Chevy engine, a ford engine and a Toyota engine. Needless to say, I don't just move a car anymore without giving it 5 minutes of running time before shutting it off.

Click to expand...

I'm thinking it could be that cause I did have a lifter sticking before . I didn't get a chance to pull the codes yet so I'l try Saturday. I don't even have 5000 miles on this engine build either. It's still on the break in tune so everyting is completly fresh. I do thank all of you for the imput so much. I'm gonna check tomorrow to see if it blew a plug outta the head too. It sucks having to work and have no garage lol

 

Back in Black

Don't feel bad. Almost 3 years on here and the onl

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Oct 21, 2002

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Pittsburgh.. Ford salesmen at Woltz & Wind For

May 10, 2010

#14

• May 10, 2010

• #14

Well I checked the Code, It said misfire in Cyl 3. . .So I changed the coil, and the plug and yes I did have the correct cylinder lol. . .But the miss and code are still there. . .

 

Stark77

Member

Jun 11, 2008

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Tallahassee, FL

May 10, 2010

#15

• May 10, 2010

• #15

Pull the heads, sounds like it could be damage from PTV.

 

Back in Black

Don't feel bad. Almost 3 years on here and the onl

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Oct 21, 2002

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Pittsburgh.. Ford salesmen at Woltz & Wind For

May 11, 2010

#16

• May 11, 2010

• #16

Stark77 said:

Pull the heads, sounds like it could be damage from PTV.

Click to expand...

From the wha???

 

R

rockyracoon

10 Year Member

Nov 23, 2005

874

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margate NJ

May 11, 2010

#17

• May 11, 2010

• #17

before you pull the head,why dont you run a leakdown test on that cylinder,that should tell you a lot,in regards to what is going on there,heck even a compression test would be helpful,IMHO.

 

M

mineralgraygt

Member

Jan 4, 2006

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nj

May 11, 2010

#18

• May 11, 2010

• #18

you might have a lifter issue. it might not be pumping up and that what could be causing the miss

 

Stark77

Member

Jun 11, 2008

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Tallahassee, FL

May 11, 2010

#19

• May 11, 2010

• #19

If you take off the valve covers, you can at least get an idea if anything in your valvetrain is bombed. If it all looks good, then you need to dig a bit deeper.

 

Back in Black

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Pittsburgh.. Ford salesmen at Woltz & Wind For

May 12, 2010

#20

• May 12, 2010

• #20

I'm praying for the lifter. Trick flow was nice enough to send me a new one just in case this was the problem. As soon as it stops raining here one day I'm going to check it out. I put a steathascope on the valve cover and it all sounds normal through both covers on each cylinder.