did u miss my point. 87 is bottom of the line. if u get any type of bad gas, u might have problems. u shouldnt run 87. bottom line. be cheap and do what u want.
Bye bye number 8
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did u miss my point. 87 is bottom of the line. if u get any type of bad gas, u might have problems. u shouldnt run 87. bottom line. be cheap and do what u want.
Come on, Shadow. There are plenty of cars out that that REQUIRE 91+ octane, to include puny 1.8T Passats and Jettas. Ford would have required 91 if it needed to, but the computer is designed to compensate. To say that "bad gas" that is advertised as 87 would then screw up your car because the octane would drop below recommended levels is silly.
You have been very pro Ford on here, and you have talked about running the car as it is designed. So, be consistent. The car was designed to put in 87 - 93 octane, with only an HP sacrifice if you run less than 91.
designed to run 91. promise u. with knock sensors for the less smart in the world. This guy beat the shit out of his car. with an air box lid open and a loose exhaust. so he beat on it after he picked up trying the new trans out. low oct, lean from air box and exhaust not tight.
You don't know that for a fact, nor do you know that he beat on the car. Even with an airbox lid partially open, a "loose exhaust" and 87 octane, the #8 should not have gone on a stock motor.
What I want to know is whether there is more here than we are being told.
Mike
he posted all that. not me
There is a reason FORD made the v6 an gt 5.0 to run on 87 with no problem. It's because it was to keep cost down for the buyers there were aiming at. Those cars where aimed at a lower market. FORD in no way would ever tell customers to put in 87 in cars that were made for 91+. They would be getting sued all the time if that was the case. Just like what happen with the 99 cobra ford over rated it an ford end up fixing a lot of those cars to make the power it claimed. Also the cars ford made to run 91+ on are like the boss an the gt350 an gt500 an there are aimed at a different class of buyers.
ok some of you guys are beating a dead horse. for the most part gasoline bought from a top tier company is good quality only real difference is octane rating. most have quality filter as well. if Ford didn't want you to be able to use different octane fuel it would say so in the manual. like others have said the knock sensors are there for a reason as well as a very smart computer to make changes as needed.
now as for the air lid you keep harping on, it doesn't matter if it was open or closed. the MAF is after the air box so no unmetered air is getting in. and that is what you said air box open. if there was a leak after the MAF that would be a different story.
anyways it's the op's car he can do what he wants. if he lied thats his problem. if he's being truthful i don't think any of you guys would man up and appoligize. thats all i have to say. David
p.s. as far as i know most dealer ships fill our cars with 87 when we buy them, mine did. if it was that much of a problem shouldn't we all sue Ford for new motors, that initial fuel could have jump started the problem. this is sarcasm of course
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I could get struck by lightning tommorrow too, that doesn't mean there's much probability of it happening. At any rate, that's why you have knock sensors, so the car will pull timing if you get a bad tank of gas(and what are the odds of that happening?).
RTFM. The car is designed to run 87. Full stop. End of story. The same people that think their motors are going to blow up by running 87 are the same idiots that think the same thing will happen if they don't run synthetic oil.
Agreed.
I ran 87 for the first 5k miles on my car before I switched to 93. 15k miles later and my engine has yet to blow up, and I haven't been easy on it.
You are wrong!!!!!!!!!!!!!!!!!!!!!! I seen it with my own eyes. If the flywheel is removed from the eng and then replaced with out crank relearn then the ecu does no know where crank tdc is and can cause a lean at WOT...
Hopefully the OP gives us an update today, if not I'll probably just close this thread.
:dancenana:
Get real,I am talking about a factory tune,factory car that has not been worked on by ford tech that does know shit doing a repair.Give Jon Lund a call about this and he will tell you the same thing that I am saying.
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I have been reading this thread hoping to find out more from the OP, but in the meantime I have been thinking about what is and isn't "abuse". There is a lot about burnouts in this thread. I have had sports cars before, but this is my first car even capable of a real burnout. I have always understood that it would typically be considered abuse to hold a stock engine near redline for periods counted in longer than seconds, if nothing else the heat builds up very quickly. On the other hand, I would think that any sports car engine should be able to approach redline frequently, for short bursts, without issue. If not, then the redline is too high.
But I was curious whether and how bad a burnout is on the engine or how it can contribute to an engine failure. I haven't done them on this car because tires, clutches and transmissions are expensive enough, never mind the engine
So I did a little web research and came across this column. He is talking about dragsters, but the principles probably apply more broadly. Just thought I'd share the link.
Tech Talk #79- Are Burnouts Abusing Your Engine? « Reher-Morrison Official Blog
I am not trying to say anything about the OP with this. Just thought it was interesting.
But I was curious whether and how bad a burnout is on the engine or how it can contribute to an engine failure. I haven't done them on this car because tires, clutches and transmissions are expensive enough, never mind the engine
So I did a little web research and came across this column. He is talking about dragsters, but the principles probably apply more broadly. Just thought I'd share the link.Tech Talk #79- Are Burnouts Abusing Your Engine? « Reher-Morrison Official Blog
I am not trying to say anything about the OP with this. Just thought it was interesting.
Well when I got my car back from ford(replaced clutch and peddle asembley) and pluged in my airforce gauge and WOT air fuel was 14.7 car was completey stock down to the paper filter. Had a crank relearn and air fuel back to 12.5. Was told that some cars will get a check eng light and may need a crank relearn and my car did not get a light unless I held RPMs around 4K 5 sec not WOT just holding RPM. At WOT no light ever I'll bet that the #8 problem is on m6 that have had a clutch replaced with flywheel removed and no crank relearn dunn or a6 car that has taken the flywheel off and no crank relearn dunn. No known A6 cars have had a #8 that i know of.
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I have been reading this thread hoping to find out more from the OP, but in the meantime I have been thinking about what is and isn't "abuse". There is a lot about burnouts in this thread. I have had sports cars before, but this is my first car even capable of a real burnout. I have always understood that it would typically be considered abuse to hold a stock engine near redline for periods counted in longer than seconds, if nothing else the heat builds up very quickly. On the other hand, I would think that any sports car engine should be able to approach redline frequently, for short bursts, without issue. If not, then the redline is too high.
But I was curious whether and how bad a burnout is on the engine or how it can contribute to an engine failure. I haven't done them on this car because tires, clutches and transmissions are expensive enough, never mind the engine
Tech Talk #79- Are Burnouts Abusing Your Engine? « Reher-Morrison Official Blog
I am not trying to say anything about the OP with this. Just thought it was interesting.
There is a burnout at a track, where you are stationary for a few seconds while you spin and heat the tires, and there is "lighting them up" on the street where you are moving forward while either intentionally, or unintentionally spinning the tires. This article was talking about doing controlled drag race burnouts on a two step and damaging the engine by riding the low rpm limiter while doing so. I think that is different than what the OP was discussing. I think clutch and transmission wear are the most likely results of his behavior, not a smoked piston.
Mike
Definitely right. Any time the transmission is out, a crank relearn must be done. The work order from having my transmission replaced has a crank relearn on it.
With the sophistication of the new PCM's if something isn't repaired properly, you can certainly cause damage to an engine.
There was a case over at TMS not too long ago of a stock car going in for a transmission replacement and immediately going back after the car was returned for a popped motor. This car as well had the #8 piston fail.
People get hung up on that #8 though. It's the hottest slug in the engine, so it's only natural that it would go first if something wasn't running correctly.
close it up buddy:beer:
I agree 100% with every thing you posted and what should be done by a ford tech during a trans and flywheel repair,but I am not WRONG saying a showroom new 5.0 motor will not run lean with the factory tune installed at the factory.Do not take my word,call Jon Lund.
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That should be the case yes. If it does, it's a manufacturer problem and should be covered under warranty regardless.
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