So all the parts should be in mananna, the young girl will have her skirt fully lifted.. I requested to view/examine all the parts, Vince was cool with that but did say the parts were going back to Yamaha as 'they have expressed specific interest' in this case. hmm. just my luck, eh?
Another possibility that has not been mentioned is a build up or carbon deposits on the back of the intake valves.
Where in the world do you come up with all this crap? There is so much untruth here I wouldn't even know where to start. Jestal if you are going to post **** as fact then at least try to get some of the facts straight before you post them. I am not going to go through and correct all your errors. You just need to do your homework and correct them yourself and quit posting BS.Some of the oil companies eliminated additives in their gasoline that minimized carb deposits, intake valve deposits, etc. back in the mid 80's as fuel injection was coming of age. They reasoned that the detergents weren't necessary anymore as carburetors were disappearing. Then port fuel injectors started plugging. Lots of driveablity issues. So the oil companies put the additives back in that eliminated the injector deposits but CAUSED intake valve deposits. They did not reinstate the intake valve deposit detergents. This was fine for a few years again but as port fuel injection systems improved and new engine designs came on board with improved injector targeting the intake valve deposit issue (as in picture) reared it's ugly head in the form of driveability issues. Several manufacturers had rather severe problems with hesitations, stalls when cold and severe hesitations and backfires when cold accels were attempteds due to the intake deposits acting like sponges and soaking up the excess fuel on open throttle transients. Surprisingly, these problems were pronounced in the OEMs that touthed their state-of-the art injector targeting which aimed straight at the back side of the intake valve....(BMW, Audi, Mercedes, were some of the more promenent ones) as well as stray engines from different manufacturers that had different injector targeting from other versions of the engine. It really DOES make a difference where the injector is located and how it is aimed...... The high tech systems with "perfect" targeting could get away with less transient fueling which made them gag when the deposits soaked up what little transient fueling (the accelerator pump shot if you will....) was being delivered.
The oil companies got on the saddle pretty quick and put all the additives/detergents back into the fuel.
Keep in mind that virtually all the gasoline in a given area comes from the same source, same pipeline, same terminall. The only difference will be the additive package in Shell, Mobil, Exxon, etc..... The additive package costs money so that is one way a discount gasoline retailer can save money to sell cheaper. Gas is the same but the additives might be less or non-existence. Even with constant use of cheap gas the occasional tankfull of Mobil Premium will usually alleviate any deposit buildup concerns.
Shell's ad has the grain of truth (IN MY OPINION) that their properly additive fortified gasoline will prevent the deposits that you MIGHT get on your intake valves if you use the crappy cheap stuff religiously.
That valve LOOKS horrible but I wouldn't have a second thought about it unless it was in my race car.....LOL. In your normal transportation engine it wouldn't mean a thing.
Besides, the technology of the injection systems has progressed to the point that most do not care about intake valve deposits anyway so that valve in the picture would run flawlessly.
I have never heard of intake valve deposits being so bad as to cause loss of compression as implied in an earlier post. Not saying that it couldn't happen but the driveability issues with BMW and others back in the late 80's blamed on intake deposits had nothing to do with holding the valve open and loosing compression but from the aforementioned fuel containment on transients.
Back in the 40/50/60's era the fuels of the day could build up hideous intake deposits that would start to resemble a golf ball clinging to the stem under the head. You can probably find pictures in an old text book. I don't know of anyone that has seen anything like that from modern fuels in years.....unless they happened to drag a 100K mile chevy out of a barn that has been in storage for 50 years.....LOL. That is what Shell would like you to remember, though, those pictures of hideous intake valve deposits when you buy gas.
And the help you are trying to offer is ?????Hope we can stay focused on the original topic, low compression. The **** swinging offers little help.
Geesh warsw, having a bad day? If you have some facts to back up your attack on Jestal, then let's hear them. Otherwise, rule #5. "No personal attacks. However, when some ****** desperately needs it for violating Rules 1-4, group dog-piles are perfectly acceptable."Where in the world do you come up with all this crap? There is so much untruth here I wouldn't even know where to start. Jestal if you are going to post **** as fact then at least try to get some of the facts straight before you post them. I am not going to go through and correct all your errors. You just need to do your homework and correct them yourself and quit posting BS.
OOohhhh, so this is a money saving adventure. Waaaay keweel! Like when the wife/SO comes home from the mall and proceeds to tell you about all the money she saved?..now, back to thread - I got the good news today that due to the failure, I won't be charged for 4 hours of valve adjustment!
Lets just start with an easy one. I have worked for the oil companies for over 35yrs and know exactly how the gas is distributed. "This is not even close".Keep in mind that virtually all the gasoline in a given area comes from the same source, same pipeline, same terminall. The only difference will be the additive package in Shell, Mobil, Exxon, etc.....
So can we pick this one up where the oil thread left off?:fans: :jerry: ......lets get ready to rumble......
That hurts. If you knew me better you would not have even ask.Warsw, what is your version of the truth?
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