T'other dayI wasjust leaving from a restaurant and was sitting in the XF while it was warming up. The person I was semi-listening to was jabbering away and I decided to look at the tachometer while still trying to look interested in this guys small talk. My eyes scanned the tach for a nanosecond and I thought to myself, "Oh, 1,400 RPM" and didn't put the numbers together. What I did was mistake the 500 mark for the 1,000 mark and assumed that each click after the mark had a value of 200. Ergo, 1,400 RPM.
Now before you guys go ape schidt on me, let me first say that I've been using tachometers since 1958, (Remember the old Sun Tachs?) and although not a mathematical genius, I am pretty good at basic arithmatic and can usually figure out what a tach or speedometer is trying to tell me.
I JUST SIMPLY HAD A BRAIN FHARDT!
And concerning the "backfire" or whatever it is,...when a good one blows, it sounds as if someone has stuffed a firecracker up my exhaust, right to the muffler, (a Zebra brand, not a cherry bomb). And once again, when I turn the ignition to the "on" position, (not start) the same event will happen with the same frequency as when starting the vehicle, (about once every 3 or 4 starts).
I'm rattling on like this in order to clarify my first posting and to let you who are mechanically inclined, (unlike myself) to reset your thought processes, since the 1,400 number I threw out there led everyone off on the wrong trail.
I apologize for the Red Herring, but I still need your assistance.
I was thinking that my problem might be connected with a "secondary air induction system" malfunction. Any comments that are only slightly insulting will be welcome.

 

You really didn't need to make a new thread.

 

I can't read what he wrote anyway... I tried but my brain is in a spin. He must have typed this from his phone because I can't understand what he is saying.

 

Oh come on now, Black XF07, you can't be serious. KILLERKANADIAN was right on top of everything, seemed to have a good understanding of the King's English, and was the first one to reply to both of my posts with undisguised scorn. So, no excuses in the "I can't understand what this dipschidt is talking about" department.
What you should do is concentrate on each word, pronounce them phonetically and then link them to each other until you end up with an understandable sentence. The words that have more that two syllables, well,...look up the meaning and pronunciation on Google.
Actually, It's probably not your fault you were unable to understand what I was posting, when the general quality of public schooling is taken into account.
I had a similar problem once until an old Chinese fisherman on the Yangtze river approached me one evening and said: "Lay off the Jack Daniels, Jack, you sound like a dumb ****".

 

Good idea, Jimmyjet, start multiple threads because you reported an inaccurate number, then make fun of long standing members.

Actions like this will get you TONS of help around here especially from those that are mechanically inclined, unlike yourself...

 

Out of everything you said that was rude and offensive to a "senior" forum member like myself, I find the statement above to be the most interesting.

So you are blaming "public school" because you can't read or write a sentence? Fact is there is nothing wrong with public schools. School is what you make of it. If your parents were more concerned about your performance at football practice and not doing your homework, how is it the public school's fault?

Here is the problem.... you didn't do your homework in school when given plenty of time to finish. You recieved an "F". Now your parents are upset and rather than get mad at you for not completing your homework, they go up to school and blame the teacher. They tell the teacher the assignment was too hard and they didn't give the student enough time to complete the task. They tell the teacher "how can my child complete the task when he has all that football practice". NOOOO---- NOT THE KIDS FAULT---- RIGHT? "IT IS THE SCHOOL SYSTEM NOT MY CHILD". Then we have other countries like Japan that are strictly focussed on studying and school... and their children are miles ahead of children like you because they value education and DO THE ASSIGNMENTS. You are too busy jacking around with your iphones and social life at school because your social life is more important than studying. But you still think our school system stinks and you blame the schools.... why? Because as a human being it is very easy to blame someone else for your own mistakes!

So you come on here and use public schools as an excuse. Well I am not buying it! When you come on here and write garbage, don't get mad at me for pointing out the obvious.

 

Dear BlackXF07, Let me jot a few things here that you may be able to understand, regardless of your admiration for public schooling.
My first post did indeed list the wrong RPM, 1,400 instead of 700. For that I apologize. Mea Culpa!
When I realized what I had done, I tried to explain why the mistake was made, especially for those good members who had volunteered their time to give me their opinion as how to correct my problem.
I hoped by doing that those folks that were willing to give helpful info could push the reset button on their thought processes and, having the patience, get back to me with a different suggestion to what my backfiring problem was caused by. DOES THIS MAKE SENSE TO YOU?
And by the way, the public school comment was directed at you for your apparent inability to be able to understand my 2nd post.
To get on with the story: KillerKanadian was the first to answer either of my posts, both with smug comments, neither of which were helpful.
Then YOU had to stir the pot with your comment that you couldn't understand what I was writing about. IS YOUR BRAIN STILL SPINNING? Maybe all those helmet to helmet contacts in your high school football games have resulted in some blunt force, post traumatic, effect. But, I'm not interested in your social problems or your inability to play nice.
And then BoilerupXF, a gent with all of the wrong answers starts ringing his hands and snifling about what he imagines as disrespect for two Senior Members.
Let me set this straight for those fine gentlemen that I have previously mentioned.
I try to go through life making as few mistakes as possible and having as few problems as possible. One problem that I do have is the "backfire" with my XF. You three guys are not problems, just aggravations.
It's easy to hide behind a computer and bad-mouth or insult someone a hundred or a thousand miles away, all the time knowing you can be fairly sure of a lack of retribution coming in the form of a knock on the door and a punch in the nose. But when you try it with with me, I'm not going to slink meekly off into a dark corner and cry my eyes out. You can be assured I will give better than I get.
Now, let me get back on point:
With my first and this final clarification of this mystical problem with my XF, I am still in need af some good ideas as to what the problem is. I would appreciate any sincere comments as to what I should start investigating, before I am forced to take it into an MB or Chrysler dealership and say "Fix it".
My regards to and sincere thanks for all of those who volunteered info on my first post, although through my own fault, they were probably colored by my incorrect listing of RPM's.

 

Has it thrown any codes ? just curious .

 

Most causes of backfires in the exhaust system can be addressed by troubleshooting the reason for the air to fuel ratio imbalance. The solution usually involves checking for vacuum leaks, changing the airflow sensor, oxygen sensor, or fuel filter to ensure the fuel system is functioning properly.

A common backfire situation occurs when there is a small leak in the air injection system that feeds the exhaust system. This can cause unburned fuel to explode suddenly. One of the most common causes is a stuck or faulty air intake or gulp valve near the exhaust manifold.

Copied and posted from another site

Howard.

 

Holy ****, wow, I am at a complete loss.

You come in here and insult people for no reason, I call you out on it, and you threaten me??
I did not insult or badmount anyone.
I am asking my friends here, please do not help this unstable individual.

I will no longer post in this thread, out of principle, but if you want to play that tough guy stuff, come see me, I will be the one holding a 12 gauge with a 40 cal on my hip...

 

I will not help him out.... Not after he insulted me. Thanks boiler.

 

I still can't read your post. I can't understand a thing you are saying. Your writing skills are terrible.

By the way.... I went to private school and have a great education. From the looks of your post I would say you were not as fortunate.

 

I used to have the same problem with a Porsche. The cause was a small amount of fuel leaking from the electric fuel pump when the engine was shut down. It collected in the fuel pump housing and when the ignition was turned on it would ignite the small amount of fuel. Obviously, this was a dangerous situation. I corrected it right away but some Porsche owners weren't so lucky and their cars were incinerated. I don't know if this translates to the Crossfire as I am not as familiar with the Crossfire fuel delivery system.

 

I had a problem with backfiring once, I dumped her quick! I didn't read all this stuff or the original thread but my car pops and crackles on deceleration. All cars do, you just don't hear it because the engineers spend so much time making sure you don't. Needswings downpipes FTW!

Les

 

Agreed lol

LOL are you really saying BlackCrossfire07 is a "long standing member"? Have you started drinking early?

I believe I remember you threatening me... Although I do find his use of the enter key after every sentence annoying, his statement was well thought out and written. I didn't really see it as threatning, but rather pointing out that whilst sitting behind a keyboard many people act differently than they would if they were talking to their neighbor.

Really??? you're upset because he criticized you for criticizing him. At least he attempted to read your unhelpful/unrelated post. Also I sense a lot of sarcasm in his posts.

Don't worry about these three, Boiler has a lot of helpful information, but blackcrossfire07 rarely (if ever) gives out any useful information.

 

Thirteendog.... We were on good terms but your post just ruined that. Just when I thought you were a good guy, you go and throw in a comment like that.

Why are you even on this forum when you sold out for some German hunk of junk machine called a Mercedes and gave up your crossfire?

 

Because there are a lot of people on this site that I actually hang out with. You know, cross the virtual world with the real world. lol

 

, Let me jot a few things here that you may be able to understand, A LITTLE WORDY FOR A YOUNG FELLA - I'M JUST SAYIN...

 

 

[quote=JHM2K][SO TRUE...ha ha ha