I guess I have a misfire...

[Phoschek]

My 2007 recently (past few weeks) has developed a mild bucking above 40mph when under light throttle. I only notice it between 40mph and 60mph at light throttle. If I start accelerating heavily the sensation goes away.

It also only seems to do it on hot days, when it's 100 degrees or more. The water temp always reads exactly where it should. I shouldn't have a blown head gasket. There is no oil in my coolant, and nothing weird in my oil.

I'm hoping this is just a garden variety misfire, but there has been no check engine light. Is it possible to have a misfire with no light?

Thanks in advance

 

[docraymund]

Yes. To confirm download torque app. It has a misfire counter. There is a post on this forum on how to do that.

 

[Phoschek]

Thanks Doc!

 

[Bedrck47]

I'm hoping this is just a garden variety misfire, but there has been no check engine light. Is it possible to have a misfire with no light?

Thanks in advance

Just curious But what is a "garden variety misfire"

 

[Phoschek]

Just curious But what is a "garden variety misfire"

One not caused by a blown head gasket. I was wondering why I haven't gotten a check engine light.

 

[Bedrck47]

One not caused by a blown head gasket. I was wondering why I haven't gotten a check engine light.

I always like it when I learn something new Of all the service manuals I own I have never seen Ford refer to any misfire as a "garden variety misfire"

So what do YOU call a misfire that isn't caused by a blown head gasket?

I may need to check my manuals for this one also.

 

[Phoschek]

There's one in every crowd...

If I was reading from a manual I wouldn't be asking here, would I?

 

[Bedrck47]

First how many miles on the expy.
When were the plugs, coils and boots last changed?
When was the fuel and air filters changed?

What you think may be just a "garden variety misfire" may not be a misfire at all. And until you use the proper test equipment you won't know for sure.

 

[Bedrck47]

There's one in every crowd...



That was my thought when I first read you post

 

[Phoschek]

Thanks for the real response. Unfortunately it took two snarky ass E warrior responses first (and a third afterwards).

Copy and paste a few pages out of your many manuals so I can make sure to use a term you'll understand in the future.

 

[Bedrck47]

If I was reading from a manual I wouldn't be asking here, would I?

Well good thing you aren't reading from a manual. For you would never find the phrase "garden variety misfire"
Then you still would have to come here for answers.

I would think that a misfire would be more pronounced under heavy acceleration than just at normal cruising speeds.

 

[Bedrck47]

Copy and paste a few pages out of your many manuals so I can make sure to use a term you'll understand in the future.

Well I think most people would understand correct terms when used and not have to figure out what others mean when they use different terms.

 

[Bedrck47]

First how many miles on the expy.
When were the plugs, coils and boots last changed?
When was the fuel and air filters changed?

I'll ask again see the above

 

[Phoschek]

Wondering how you make it through life conversing with people that aren't speaking regurgitated terminology that you'd seen in a manual...

Most mechanics manage to listen to customers without ripping their ass for not using a term from a manual.

"My vehicle is sputtering"

"Sorry ma'am but sputtering isn't something I've read in a manual. I'm going to sit here and make sarcastic ass remarks about how many manuals I own until you can come up with the exact terminology found on page 25-A of my manual."

 

[Bedrck47]

I do just fine If you don't like what you think was a smart a** response then take it to your mechanic and pay him by the hour to figure out what you mean.

On this forum you are getting free advice and the advice you receive is all based on the input you give. When you give bad information you most likely will get bad advice when the information you give is good then you will get good advice. I try to help people and I do that very often. But when a Strange term is use then I try to find out what the OP means by that term. I may even learn something new. And that is why I asked what you meant by your"garden variety misfire" Something I never heard before and just thought I was missing something.

Now twice I have asked you about plugs filters etc. You have yet to respond I could care less if you do or don't but that tells me how much you care about getting help

Again the information you give or don't give will be reflected it the help you get or don't get in return.

 

[Phoschek]

I'll respond to people that are actually going to help. I won't respond to someone that's just going to pontificate on if a word is actually written in the manual or not and act like they're king sh** because they own a few manuals.

This will in fact be my last response to you. You can keep acting shocked that I'm not giving you further information all you want. Why would I, when all you're going to do is make a big deal out of nothing and go off on whether the words used in the response are in the manual or not. This is the biggest tangent I've ever seen someone make out of a general phrase. Obviously, I never expected the phrase garden variety to be in your manual, since most people know what it means and don't flip out over things said in regular conversation. Since you don't know what it means, garden variety simply means "average". I'm glad I didn't say "run of the mill" because you probably would have had an aneurysm wanting to know what mill I was talking about.

Don't bother acting like a martyr. I would have gladly conversed with you if you just asked questions without having to get a pair of smart ass digs in about your manual before finally deciding to act like you wanted to help. I've been on automotive message boards for 15 years and have never seen someone make such a ridiculous stand over terminology from the manual. If you were trying to impress me over your vast technical prowess... Wow. Anyway, thanks for ruining my thread with your helpful and uninvited sarcasm. I noticed you answer lots of questions around here with the same level of tact.

Free help or not, it is possible to talk to people without acting like a *******. Millions of people do it every day.

 

[Bedrck47]

Well do me a favor and go to a local mechanic and ask him the same as you originally posted and see what his response is to a
"garden variety misfire" I'll bet he gets a good laugh out of it. As my local mechanic is still rolling on the floor laughing after I showed it to him.

As I said I could care less about helping you I was trying to get an understanding of your problem and was trying to understand your terminology as it isn't a normal term. A misfire is a misfire as to what causes it then that is a different story. Being you don't want to answer about miles plugs filters etc. I can only assume that your problem is most likely caused by lack of maintenance more than anything.