Engine sputtering and no power. Help!!!

**Greenmachine** · 05-11-2012

I was on the hi way revving out the engine and this happened. The engine shakes and sputters.

Green machine - YouTube

**matt5112** · 05-11-2012

One thread per topic guy.

Have the stock cat?

**Greenmachine** · 05-11-2012

Didn't know the other one posted. The exhaust is broken. So no cat on it.

If I lift the pipe then it would be stock

**Fivefingerdeathpunch** · 05-11-2012

Any SES lights?

Any misfires?

Those MSD coils are junk, replace with stock.

I'd pull the plugs just for the hell of it to see what they look like.

**Greenmachine** · 05-11-2012

It is misfiring. Checking the plugs tomorrow. I'm hoping that is what it is. I've done a lot of mods but never changed the plugs. I'm not sure what are in it. I just hope I didn't bend a push rod

**Fivefingerdeathpunch** · 05-11-2012

bending a push rod is a least of your worries.

Having a chipped piston is what you dont want to see.

If any of the plugs have missing tops, you have internal damage.

But you wont know till you take them out.

**Greenmachine** · 05-11-2012

Can't the tip burn off if it's old and burning hot?

**luvmykalashnikov** · 05-12-2012

If the plugs are old and worn, that will typically show up slowly over time with loss of performance and bad fuel economy. Since your issue happened quickly while "revving out the engine", I doubt it would be cause by worn plugs.
How much KR did you have before the problems started?

**FordMan77** · 05-12-2012

So you've done "a lot of mods" but never changed the spark plugs??? Not good. I have a feeling we could see another longblock on the way. Is the CEL on? Have you scanned it for codes anyway even if its not on? That can tell us a lot.

What are your mods? Besides the MSD coils (which has already been mentioned to change back to stock) and MSD wires. Looked like a smaller pulley on the S/C as well. Running premium (91+ octane) in it all the time?

**Greenmachine** · 05-12-2012

crank, heads, intercooler, cold air, and more...

**Greenmachine** · 05-12-2012

http://s1269.photobucket.com/albums/jj589/Greenmachine2021/?action=view¤t=48dc5d72.jpg&evt=user_media_share

**Greenmachine** · 05-12-2012

Replaced with http://s1269.photobucket.com/albums/jj589/Greenmachine2021/?action=view¤t=43b91a19.jpg&evt=user_media_share

**Dragon1972** · 05-13-2012

Chipped piston, mine did 3. Full rebuild on L36 block shortly after.

**Sven the Sexman** · 05-12-2012

Sounds as good as my friend's car when he chipped a few pistons.

**Greenmachine** · 05-12-2012

Found the problem

**Sven the Sexman** · 05-12-2012

And it was...?

**Sven the Sexman** · 05-12-2012

Looks like you probably chipped a piston to cause that.

**Fivefingerdeathpunch** · 05-12-2012

I wouldnt have gone with iridums, but they might work,

Because of your mods, its best to run a colder plug with the power you are pushing. Autolte 104's would have been better, but I guess you'll have to see how the car performs.

**Greenmachine** · 05-12-2012

Originally Posted by Fivefingerdeathpunch

I wouldnt have gone with iridums, but they might work,

Because of your mods, its best to run a colder plug with the power you are pushing. Autolte 104's would have been better, but I guess you'll have to see how the car performs.

Why colder? Everyone always told me hotter spark for hi proformance engines. Hot coils plus and ignition.