hesitation

phils04gt · 07-06-2009, 12:42 AM

My wife's sixer is running terrible. It is bucking like crazy/sputtering and making a ticking sound. It has good oil pressure, it almost sounds like it is not firing on all of the cylinders. I just changed the plugs but that did not help. Any suggestions? Thanks. O yeah, the service engine light was on when this happened, so I bought new plugs and reset the SES. The light hasnt come back on but it still runs terrible I checked the coil and it seems to be working fine. I checked it by pulling off one wire at a time and you could see the spark jumping in all of them. The CEL will not come back on at the moment. I drove the car around for about 10 minutes and nothing, the car would run like absolute junk but I can't get the CEL to come back on so I can pull the codes. Any help???

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phils04gt · 07-08-2009, 01:10 AM

Doesn't look like too many people care. Anyway, I brought the car to the ford dealer and they did a compression check on it and the number one cylinder had zero compression. I then did a compression check on it myself, for the hell of it, and it came back with the same results. I am not too sure how this all came about. Drove the car for a while and no issues. All of a sudden one day it began to act up, no symptoms, just goes into self destruct mode. Now no compression. It only has 79k miles on it. Any ideas?

Gemini · 07-08-2009, 07:16 PM

with no compression at the cylinder, i would start with looking at the piston rings.

Fink · 07-08-2009, 08:19 PM

+1... piston rings are probably shot.

phils04gt · 07-09-2009, 04:26 PM

It turned out to be a $9 valve spring.

Gemini · 07-09-2009, 04:27 PM

Good catch. If the valve was not closing it would be hard to get any compression. Nice job and glad it was a cheap fix for you.