After searching and reading so much on this forum my time came to become a member. Here is my story . . .
2001 Jag S-type 4.0 with 86k on engine ran great until one day came to work everything was good when it was time to go home car would not start won’t even click first thing to check was battery and it was good. The next day when i came to tow it home it started but it was running ReAl bad smoke coming out of passenger side (right) tail pipe. When it got home I scanned it and had no codes (errors). To me it sounds like timing is off on bank A, when i took valve cover off, both chains are tight. When i try to start it, it starts up one time right away and the next time with some problems. When it runs it would back fire occasionally and at the end it would just die if you won’t give her some gas. I check sparks and ignition coils they are good. think i covered everything wanted to recorded how it sound so you guys can hear but forgot.
Any help and ideas as to what could be wrong are greatly appreciated.

 

Welcome! Not timing. Go back to coils/spark plugs.

 

What should I be looking for in them? All eight of them get spark.

 

Read what you posted... you appear to have misfire = unburnt fuel so chances are you have one or more bad coils. Having spark is about useless on any modern engine unless the coils are working right. Or... maybe you have that other common cause of unburnt fuel, an air leak. (This is car 101, right?) Check for that... fuel trims would be a start. Then there's a bad O2 sensor. BTW, Search is great on here

edit: don't be put off I was in a hurry!!

 

Ditto to Jagv8

 

I did search on here but couldn’t find enough info (maybe i just don't know how to). Wouldn’t bad O2 sensor give me a code? What do you mean by if this car is 101?

 

Since you are asking about codes, have you read the codes?

And, what colour was the smoke anyways?

 

I scaned for codes using TouchScan and it didn't show me any codes. To me smoke looked light blue

 

Light blue?

White is usually coolant, rich fueling is usually black.

What does it smell like? Fuel or sweet?

 

it smell like fuel and burnt oil

 

So I recived 8 new coils today went down to Autozone picked up new spark plugs installed them, started her up and . . . . ):
Link is how she sound right now.

http://www.fileden.com/files/2012/3/...0302-00002.amr

any ideas what could be the problem????

and this in on S-type 4.0

 

The filden link works with Real Player, the first link needs to be deleted.

Wow, sounds like the motor is firing on 3 cylinders or so. There have got to be codes now. Did the motor sound that bad before you replaced the plugs and coils?


Did you have the intake tube connected in the sound clip? I hear alot of air being sucked.

 

I would not run the engine much more til you clean that misfiring . Your fuel injectors may have a problem and it will just get worse.
My 2000 s-type 4.0 started having the bad misfires just out of the blue,and I gently brought it back to Normal with Techron concentrated cleared it by gently running the engine for several days. I guess I need to drive it a little harder.
I thought I might have to try Seafoam but Techron worked .

 

Strictly there don't HAVE to be codes. If it runs badly enough the poor PCM just can't figure what to flag. Or it flags lots and lots.... (I've seen 30+ at once)

 

I am willing to bet that there are codes.

 

Ah. I don't really "bet" (I like 100% certainty in my favour).

 

There is no codes, at the end of clip I took off air intake to see if anything changes with no good results it just died. Yes it ran this bad before I changed sparks and coils.

 

The audio file is helpful, but I'm going to guess that there is some mechanical (non-electronic) issue. I wouldn't attempt to start it any more, time for a mechanic to take a look.

 

S theHow can I check if my injectors are working properly?

 

If it's a 4.0 then be worried in case it's related to a tensioner failure. If it is, the 4.0 is an interference engine so terminally serious mechanical damage is quite possible.